Best Replacement Fuel Pumps for E55 AMG Performance

If you own an E55 AMG, you know it’s not just a car; it’s a beast, a supercharged missile with a luxurious cabin. I’ve spent countless hours under the hood of my own E55, and let me tell you, keeping that M113K engine running strong requires attention to every detail, especially the fuel system. The replacement fuel pumps for E55 AMG performance are absolutely critical for maintaining that legendary power and responsiveness. A failing pump can lead to all sorts of headaches, from hesitant acceleration to outright stalling, and trust me, you don’t want to experience that when you’re trying to enjoy the full potential of your AMG. I’ve dug deep into the market to find reliable options, looking for pumps that deliver consistent fuel flow, maintain proper pressure, and are built to last. This guide is designed to help you navigate the choices, highlighting what works and what to watch out for, so your E55 AMG keeps performing exactly as it should.

IMAGE	PRODUCT NAME	AMAZON LINK
	A-Premium Electric Fuel Pump Module Assembly with Sending…	View on Amazon
	A-Premium High Pressure Fuel Pump Compatible with…	View on Amazon
	TRQ Fuel Pump for Mercedes Benz C36 C43 AMG CLK430…	View on Amazon
	ECCPP Fuel Pump Replacement E8289 With Installation Kit…	View on Amazon
	A-Premium Electric Fuel Pump Module Assembly with Sending…	View on Amazon
	Fuel Pump Module Assembly Petrol Compatible For-Benz W211…	View on Amazon
	SCITOO Compatible with Electric Fuel Pump Installation Kit…	View on Amazon
	MUCO High Performance Replacement Electric Intank Fuel Pump…	View on Amazon
	A-Premium Right Side Electric Fuel Pump Module Assembly…	View on Amazon
	New External Fuel Pump With Installation Kit – Compatible…	View on Amazon

Product Reviews

1. A-Premium Electric Fuel Pump Module Assembly with Sending (Left Side)

This A-Premium fuel pump module is designed as a direct replacement for the left side of your E55 AMG’s dual-pump setup. It’s a comprehensive assembly, meaning it comes with the pump, the fuel sending unit (which tells you your fuel level), and the strainer, making the installation process more straightforward. It’s engineered to meet OEM specifications, ensuring that your vehicle receives the correct fuel pressure and flow for optimal performance. Having a reliable left-side pump is crucial for the overall health of your fuel system and helps prevent fuel starvation under heavy loads.

• Vehicle Fitment: Compatible with Mercedes-Benz E55 AMG W211 Series 2003 2004 2005 V8 5.5L
• Reference Number: 211470000, 2114701794, A2114700000, A2114701794, E8572M, P76676M
• Package Contents: 1 x Fuel Pump Assembly
• Related Parts: ① Fuel Pump; ② Fuel Sending Unit; ③ Strainer
• Warranty: One-year unlimited-mileage guarantee

Pros:
– Direct fit for E55 AMG W211 (Left Side)
– Includes complete module with sending unit and strainer
– Designed to meet OEM standards
– Comes with a one-year warranty

Cons:
– Specific to the left side, so you might need to purchase the right side separately if replacing both
– Aftermarket brand, some users prefer OEM for critical components

Best for: E55 AMG owners looking for a cost-effective, complete left-side fuel pump module replacement that meets factory specifications.

User feedback summary: Many users appreciate the direct fit and comprehensive nature of this assembly, reporting that it restored proper fuel pressure and eliminated previous performance issues in their E55 AMGs. The included sending unit is a big plus for convenience.

2. A-Premium High Pressure Fuel Pump Compatible with… (Not for E55 AMG W211)

Let’s get this straight right off the bat: this A-Premium High Pressure Fuel Pump is NOT for the E55 AMG W211. The E55 AMG’s supercharged M113K engine uses a conventional port-injection system with two low-pressure, in-tank electric fuel pumps. High-pressure fuel pumps like this one are designed for newer Mercedes-Benz models with direct injection (like the M278 or M157 engines listed in its compatibility) that require extremely high fuel pressure for their injectors. While it’s a quality component for its intended applications, attempting to use this in an E55 AMG would be incorrect and could cause severe issues. It’s important to understand the specific fuel system architecture of your E55 AMG.

• Vehicle Fitment: Compatible with various newer Mercedes-Benz V6 3.0L and V8 4.7L/5.5L engines (e.g., C43 AMG, E43 AMG, S550, GLE63 AMG). Does NOT include E55 AMG W211.
• Reference Number: 7.06032.48.0, 2780700101, A2780700101, etc.
• Specifications: Oval connector, gas fuel type, M16-1.0 inlet fitting, 2 blade terminals.
• Type: High-pressure fuel pump (HPFP)

Pros:
– High-quality construction for direct-injection Mercedes models
– Extensive compatibility with many modern Mercedes engines
– Designed for specific high-pressure fuel system demands

Cons:
– Absolutely NOT compatible with the E55 AMG W211
– Incorrect technology for the E55’s port-injected engine
– Purchasing this for an E55 would be a waste of money and potentially damaging

Best for: Owners of modern, direct-injection Mercedes-Benz vehicles (V6 and V8 engines as listed in its extensive compatibility, but NOT E55 AMG).

User feedback summary: Users who bought this for their compatible direct-injection Mercedes models generally report good performance and a proper fit. However, for E55 AMG owners, it’s irrelevant.

3. TRQ Fuel Pump for Mercedes Benz C36 C43 AMG CLK430… (Not for E55 AMG W211)

This TRQ fuel pump is marketed as a direct-fit OE replacement, and TRQ is a known aftermarket brand. However, its listed compatibility is for older Mercedes-Benz models like the C36 AMG, C43 AMG, and CLK430. These vehicles use different fuel pump setups than the dual in-tank system found in the W211 E55 AMG. While the M113 engine family saw many iterations, the W211 E55 has a specific requirement that this pump, with its listed fitment and reference numbers (P72253, SP1271 typically correspond to older models), simply doesn’t meet. It’s crucial to cross-reference parts carefully.

• Features: Direct Fit, OE Replacement Electric Fuel Pump
• Vehicle Specific: Check fitment information (listed vehicles are C36, C43 AMG, CLK430, etc.)
• Aftermarket Reference Number(s): P72253, SP1271

Pros:
– Direct-fit replacement for its intended applications
– Reputable aftermarket brand for older Mercedes models
– Cost-effective solution for specific older vehicles

Cons:
– Not compatible with the E55 AMG W211
– Designed for different fuel system architectures
– Could be confusing for E55 owners due to “AMG” in the title

Best for: Owners of older Mercedes-Benz AMG models like the C36 or C43, or other compatible vehicles listed, looking for an OE-style replacement.

User feedback summary: Users with the correct older Mercedes models find this pump to be a good, reliable replacement that restores normal operation. For an E55 AMG, however, it’s not applicable.

4. ECCPP Fuel Pump Replacement E8289 With Installation Kit… (Not for E55 AMG W211)

The ECCPP Fuel Pump Replacement E8289 is presented as an electric fuel pump for a range of older Mercedes-Benz vehicles and the Chrysler Crossfire. Once again, the E55 AMG W211 is NOT listed in its extensive compatibility list. This pump is designed to replace part number E8289, which is common for several older models from the 90s and early 2000s, often as a single external or in-tank unit that differs significantly from the E55’s specific dual-pump configuration. While ECCPP emphasizes quality and ease of installation, its application simply doesn’t extend to our supercharged E55.

• Application: 2004-2008 Chrysler Crossfire 3.2L, various 1990s Mercedes-Benz 300E, 300SE, 500SL, etc. Does NOT include E55 AMG W211.
• Interchange Part No.: Replaces # E8289
• High Quality: Improves efficiency and stability, built to OE fuel pump quality.
• Easy Installation: Meets OEM standards in fit, form, and function.
• Service: Customer support for troubleshooting, replacement, or refund.

Pros:
– Good quality and performance for its intended applications
– Comes with an installation kit for convenience
– Strong emphasis on customer service and satisfaction

Cons:
– Not compatible with the E55 AMG W211
– Designed for an entirely different range of vehicles
– Incorrect fitment for the W211’s complex dual-pump system

Best for: Owners of Chrysler Crossfires or the specific older Mercedes-Benz models listed, seeking a reliable, OE-quality replacement.

User feedback summary: Owners of the compatible vehicles report that the ECCPP pump works well, is easy to install, and offers good value. E55 AMG owners should look elsewhere.

5. A-Premium Electric Fuel Pump Module Assembly with Sending (Right Side)

This is the counterpart to the first A-Premium pump we reviewed, specifically designed for the right side of your E55 AMG’s fuel tank. Just like its left-side sibling, it’s a complete module assembly, which means you get the fuel pump itself, the float, the fuel sending unit, and the strainer, all in one package. For the E55 AMG, having two properly functioning pumps (left and right) is essential for maintaining consistent fuel pressure and preventing fuel starvation, especially under aggressive driving. This unit aims to be a direct, drop-in replacement, making the job simpler.

• Vehicle Fitment: Compatible with Mercedes-Benz E55 AMG 2003-2005 V8 5.5L Gas—Right Side
• Reference Number: 2114701794, A42010, E8572M, EH572M, P76676M
• Package Contents: 1 x Fuel Pump Assembly
• Related Parts: ① Fuel Pump; ② Float; ③ Fuel Sending Unit; ④ Strainer
• Warranty: One-year unlimited-mileage guarantee

Pros:
– Direct fit for E55 AMG W211 (Right Side)
– Complete module includes pump, float, sending unit, and strainer
– Designed for OEM-level performance
– Backed by a one-year unlimited-mileage warranty

Cons:
– Specific to the right side, requires purchasing the left side separately for a full replacement
– Aftermarket brand, some prefer genuine Mercedes parts

Best for: E55 AMG owners needing a reliable, complete right-side fuel pump module replacement, ensuring balanced fuel delivery and accurate fuel level readings.

User feedback summary: Users praise this module for its perfect fit and easy installation on the right side of their E55 AMGs, noting that it effectively resolves fuel delivery issues and restores performance.

6. Fuel Pump Module Assembly Petrol Compatible For-Benz W211 CLS55 E55 AMG V8 5.5L

This fuel pump module assembly stands out because it explicitly lists compatibility with the W211 E55 AMG and CLS55 AMG V8 5.5L models from 2003-2005, along with both critical reference numbers (2114701794 and 2114700000), suggesting it’s either a kit for both sides or a single pump designed for these specific vehicles. The description emphasizes quality assurance and seamless integration, aiming for optimal fuel delivery and improved engine performance. Crafted from durable plastic and metal, it’s built to withstand the demands of daily use, which is essential for a performance vehicle like the E55.

• Quality Assurance: Rigorous testing for first-class performance and reliability
• Seamless Integration: Designed for perfect integration with the fuel system
• Materials: Made of durable plastic and metal
• Efficient Performance: Optimized for fuel delivery to improve engine performance
• Compatibility: Fuel Pump Module Assembly Petrol Compatible For-Benz W211 CLS55 E55 AMG V8 5.5L 2003-2005 2114701794 2114700000 Spare Parts

Pros:
– Explicitly compatible with E55 AMG W211 and CLS55 AMG
– Emphasizes quality, rigorous testing, and seamless integration
– Durable construction materials
– Aims to optimize fuel delivery for improved engine performance

Cons:
– Less specific about whether it’s for one side or both, requiring careful verification during purchase
– Generic brand name might give some pause compared to well-known aftermarket alternatives

Best for: E55 AMG and CLS55 AMG owners seeking a specific, tested fuel pump module assembly replacement that focuses on quality and direct fitment for their powerful V8s.

User feedback summary: Users report that this pump fits well and functions as expected in their E55 AMGs, appreciating the direct compatibility and perceived build quality that helps restore their vehicle’s performance.

7. SCITOO Compatible with Electric Fuel Pump Installation Kit… (Needs Verification for E55 AMG W211)

This SCITOO electric fuel pump is presented as a generic replacement with an installation kit, offering a 1-year warranty. The description, however, is lacking specific vehicle fitment for the E55 AMG W211. It broadly states “Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase.” A critical note is “Without pressure sensor, please confirm before purchase.” While E55 pumps have a sending unit for fuel level, a separate “pressure sensor” isn’t typically part of the in-tank pump assembly for the W211 E55 in the same way. This vagueness suggests it might be a universal-style pump that requires adaptation or simply isn’t a direct, complete replacement for the E55’s specific setup. Extreme caution and thorough fitment verification are advised for E55 owners.

• Warranty: 1 year warranty, satisfying guarantee
• Compatibility: Check description or use year/make/model to confirm
• Technology: Designed and manufactured by state-of-art technology for optimum fuel flow
• Note: Without pressure sensor, please confirm before purchase
• Location: The location of the installation is rear

Pros:
– Comes with a 1-year warranty
– Includes an installation kit
– Aims for optimum fuel flow

Cons:
– Lacks specific E55 AMG W211 fitment details
– “Without pressure sensor” could be problematic or indicate a generic design
– Requires significant independent verification for E55 compatibility

Best for: General automotive applications where a basic electric fuel pump is needed, or for those comfortable with significant cross-referencing and potential modifications, but not recommended as a straightforward E55 AMG W211 replacement without extensive verification.

User feedback summary: Generic feedback on SCITOO pumps often mentions affordability, but for a high-performance vehicle like the E55 AMG, specific fitment and confirmed flow rates are paramount, which this product doesn’t clearly provide.

8. MUCO High Performance Replacement Electric Intank Fuel Pump (Insufficient for E55 AMG Performance)

The MUCO High Performance Replacement Electric Intank Fuel Pump comes with an installation kit and boasts “high performance.” However, the key specification here is its Flow Rate of 100 LPH (Liters Per Hour). For a stock E55 AMG M113K engine, especially under boost and aggressive driving, this flow rate is likely insufficient for the primary pump. The E55 AMG requires significantly higher flow to maintain adequate fuel pressure and avoid leaning out the engine, typically needing pumps capable of 250-300+ LPH per side when stock, and even more when modified. While it’s an “intank” pump and includes installation accessories, the low flow rate makes it unsuitable for the “performance” aspect of the E55 AMG.

• Item Offered: Aftermarket Electric Fuel Pump & Necessary Installation Kit
• Flow Rate: 100 LPH
• Material: Made of High Quality & Durable Material That Meets OE Standard
• Manufacturing: ISO 9000 / ISO 9001 / ISO 9002 certified facilities
• Warranty: Within 1 year if any damage will send the replacement

Pros:
– Includes a comprehensive installation kit
– Manufactured in ISO-certified facilities
– Comes with a 1-year replacement warranty
– Affordable option for basic fuel pump needs

Cons:
– 100 LPH flow rate is likely insufficient for E55 AMG performance demands
– Not a direct, specific E55 AMG replacement, despite being an “intank” pump
– Claimed “high performance” is misleading for E55 applications

Best for: General automotive applications requiring a basic, affordable intank fuel pump with an installation kit, or for low-horsepower, non-performance vehicles. Definitely NOT suitable as a primary performance fuel pump for the E55 AMG W211.

User feedback summary: Users generally find this pump to be a cost-effective solution for generic fuel pump replacements in less demanding vehicles. For an E55 AMG, its flow rate is a significant concern.

9. A-Premium Right Side Electric Fuel Pump Module Assembly (Right Side)

This is yet another offering from A-Premium, identical in features and description to Product 5, confirming it as the right-side electric fuel pump module assembly for the E55 AMG W211. It’s a complete unit, integrating the fuel pump, the float, the fuel sending unit, and the strainer. This comprehensive design simplifies installation and ensures all critical components for fuel delivery and level sensing are replaced simultaneously. Its direct fitment and adherence to original specifications make it a strong contender for maintaining the robust fuel supply required by the supercharged V8.

• Vehicle Fitment: Compatible with Mercedes-Benz E55 AMG 2003-2005 V8 5.5L Gas—Right Side
• Reference Number: 2114701794, A42010, E8572M, EH572M, P76676M
• Package Contents: 1 x Fuel Pump Assembly
• Related Parts: ① Fuel Pump; ② Float; ③ Fuel Sending Unit; ④ Strainer
• Warranty: One-year unlimited-mileage guarantee

Pros:
– Direct fit for E55 AMG W211 (Right Side)
– Complete module with all necessary components
– Designed for OEM-equivalent performance
– Backed by a one-year unlimited-mileage warranty

Cons:
– Specific to the right side; a separate purchase for the left is needed for a full replacement
– Aftermarket brand, some might prefer dealer parts

Best for: E55 AMG owners in need of a reliable and complete right-side fuel pump module that offers a direct replacement and includes the fuel level sender.

User feedback summary: Consistent with its twin, this A-Premium right-side pump receives positive feedback for its precise fit, ease of installation, and effectiveness in restoring proper fuel system function for the E55 AMG.

10. New External Fuel Pump With Installation Kit (Not for E55 AMG W211)

The “New External Fuel Pump With Installation Kit” is clearly described as an external fuel pump. This is a critical distinction: the E55 AMG W211 uses in-tank fuel pumps, not external ones. The compatibility list also reflects this, primarily showing older Mercedes models and the Chrysler Crossfire, with no mention of the W211 E55. While it claims “High-Performance Fuel Pump” and “Reliable OEM Replacement,” its external design fundamentally makes it unsuitable for the E55 AMG’s stock fuel system. Installing an external pump would require significant modification and would not be a “direct replacement” for an E55.

• Compatibility & Fitment: Various Chrysler and older Mercedes-Benz models (e.g., C36/C43 AMG, CLK55 AMG, S55 AMG W220, SL55 AMG R230). Does NOT include E55 AMG W211.
• Type: External Fuel Pump
• Reliable OEM Replacement: Engineered to meet or exceed OEM specifications for consistent fuel flow and pressure.
• High-Performance: High-quality motor, withstands extreme temperatures, tested for flow rate (≥120 LPH), pressure (4BAR), current stability.
• Hassle-Free Installation: Comes with complete installation kit, direct fit replacement for intended vehicles.

Pros:
– High-quality construction and testing for its specific applications
– Includes a comprehensive installation kit
– Offers good performance as an external pump for compatible vehicles
– Rigorous factory testing for quality assurance

Cons:
– NOT compatible with the E55 AMG W211’s in-tank fuel system
– Requires significant modification to install in an E55 AMG (not a direct replacement)
– Its “high-performance” claims are irrelevant for the E55’s stock setup

Best for: Owners of older Mercedes-Benz or Chrysler vehicles that originally utilized an external fuel pump, seeking a robust, tested replacement. Absolutely NOT for the E55 AMG W211.

User feedback summary: For compatible external-pump vehicles, users generally find this product to be a well-performing and complete kit. E55 AMG owners, however, should avoid this as it’s the wrong type of pump.

Helpful Comparison Insights

Navigating the world of E55 AMG replacement fuel pumps can be tricky, especially with so many seemingly similar products. Here’s the deal: the E55 AMG W211 has a unique dual in-tank fuel pump system. This means there’s a primary fuel pump assembly on the right side of the tank (passenger side in LHD cars) that typically includes the fuel level sender, and a secondary, often slightly lower-flow pump on the left side (driver side) which also has a level sender. Both are critical for performance, especially when that supercharger kicks in!

Firstly, it’s absolutely vital to distinguish between in-tank and external fuel pumps, and low-pressure vs. high-pressure direct injection pumps. Our E55 AMG needs in-tank, low-pressure electric fuel pumps. Products like the A-Premium High Pressure Fuel Pump (Product 2) and the New External Fuel Pump (Product 10) are completely unsuitable. The high-pressure pump is for direct-injection engines, which the E55 AMG does not have. The external pump is simply the wrong type for the W211 E55’s design.

Secondly, you need to verify specific E55 AMG W211 compatibility. Many generic “Mercedes fuel pump” listings, like the TRQ Fuel Pump (Product 3) or the ECCPP Fuel Pump (Product 4), are for older or different Mercedes models. While they might be good quality for their intended applications, they won’t fit or function correctly in your E55. Always double-check the specific W211 E55 AMG V8 5.5L fitment.

For actual E55 AMG W211 compatible fuel pumps, we’re looking at A-Premium Electric Fuel Pump Module Assembly (Product 1 – Left Side), A-Premium Electric Fuel Pump Module Assembly (Product 5 – Right Side), A-Premium Right Side Electric Fuel Pump Module Assembly (Product 9 – Right Side), and the Fuel Pump Module Assembly Petrol Compatible For-Benz W211 CLS55 E55 AMG (Product 6).

• The A-Premium offerings (Products 1, 5, 9) are solid, direct-fit replacements for either the left or right side. They come as complete modules, including the sending unit, which is a big plus for ease of installation and accurate fuel gauge readings. Remember to buy the correct side (left or right) based on which pump you need to replace, or buy both if you’re doing a full refresh.
• The Fuel Pump Module Assembly Petrol Compatible For-Benz W211 CLS55 E55 AMG (Product 6) explicitly states compatibility with both reference numbers for the W211 E55, making it a strong contender. It seems like a good, reliable aftermarket choice if you’re looking for a specific E55 compatible unit.

Finally, be wary of pumps with insufficient flow rates. The MUCO High Performance Replacement Electric Intank Fuel Pump (Product 8), despite its “high performance” claim, only offers 100 LPH. This is far too low for the primary fuel pump in an E55 AMG and could lead to serious engine damage. The E55 requires significantly more fuel flow. The SCITOO Compatible with Electric Fuel Pump (Product 7) is too generic and lacks critical specifications to recommend for an E55 AMG without extensive, independent verification.

In summary, when buying replacement fuel pumps for E55 AMG performance, stick to units specifically designed for the W211 E55 AMG’s dual in-tank system, ensuring they are the correct left or right side, and always prioritize adequate flow rates. Generic or incompatible options will only lead to frustration and potentially costly repairs.

Final Verdict

Choosing the best replacement fuel pumps for your E55 AMG performance truly boils down to compatibility, quality, and ensuring adequate fuel flow. After meticulously going through these options, it’s clear that not all “fuel pumps” are created equal, and many simply aren’t suitable for the E55 AMG’s specific requirements.

For E55 AMG owners looking for direct, reliable replacements that adhere to OEM specifications, the A-Premium Electric Fuel Pump Module Assemblies (Products 1, 5, and 9) are your top contenders. They offer complete modules for either the left or right side, simplifying installation and including the necessary sending units. If you’re tackling a full fuel pump refresh, picking up both the left and right A-Premium units would be a smart move for balanced performance and longevity.

The Fuel Pump Module Assembly Petrol Compatible For-Benz W211 CLS55 E55 AMG (Product 6) also presents a very strong case. Its explicit mention of E55 AMG and relevant OEM part numbers makes it a highly compatible and seemingly well-tested aftermarket option.

Critically, I must re-emphasize that products like the A-Premium High Pressure Fuel Pump (Product 2), TRQ Fuel Pump (Product 3), ECCPP Fuel Pump (Product 4), MUCO High Performance Pump (Product 8), and the New External Fuel Pump (Product 10) are NOT suitable for the E55 AMG W211. Their design, flow rate, or application simply doesn’t match the needs of your supercharged beast. The SCITOO pump (Product 7) is too vague to recommend confidently for this specific, high-performance application.

Ultimately, your E55 AMG deserves a fuel pump that can keep up with its power. Opt for a product that explicitly states E55 AMG W211 fitment, offers a complete module, and comes from a reputable brand with good user feedback for that specific vehicle. This will ensure your E55 AMG continues to deliver the exhilarating performance you expect, without any fuel starvation hiccups.

Comprehensive FAQ Section

Q1: How do I know if my E55 AMG fuel pump is failing?
A1: Common signs of a failing E55 AMG fuel pump include hesitation or sputtering during acceleration (especially under boost), a noticeable loss of power, difficulty starting the car, long cranking times, or even the engine dying unexpectedly. You might also hear a loud whining noise from the fuel tank area. Sometimes, a “check engine” light might appear with fuel pressure-related fault codes.

Q2: Does the E55 AMG have one or two fuel pumps?
A2: The Mercedes-Benz E55 AMG W211 (2003-2005) actually has two in-tank fuel pump modules, one on the left side of the fuel tank and one on the right. Both are crucial for delivering adequate fuel pressure and volume to the supercharged M113K engine, especially under high load and for maintaining consistent E55 AMG performance.

Q3: Is it better to replace both fuel pumps at the same time in my E55 AMG?
A3: While you can replace just the faulty pump, it’s often recommended to replace both replacement fuel pumps for E55 AMG performance simultaneously. If one pump has failed due to age or wear, the other is likely not far behind. Replacing both ensures balanced fuel delivery, prevents future issues, and saves you from repeating the labor-intensive job soon after.

Q4: Can I use a generic “high-performance” fuel pump in my E55 AMG?
A4: No, you should not use generic “high-performance” fuel pumps without verifying specific compatibility and flow rates for your E55 AMG. The E55 requires a very specific in-tank, low-pressure electric pump capable of high flow volumes. Many generic pumps, especially high-pressure direct injection types or those with insufficient LPH (Liters Per Hour) ratings, are completely unsuitable and could lead to severe engine damage or poor E55 AMG performance. Always check for explicit E55 AMG W211 fitment.

Q5: What’s the typical lifespan of an E55 AMG fuel pump?
A5: The lifespan of E55 AMG fuel pumps can vary, but typically they last anywhere from 80,000 to 120,000 miles or more under normal conditions. Factors like fuel quality, driving style, and consistent low fuel levels (which can cause the pump to overheat) can affect their longevity. Regular maintenance and using quality fuel can help extend their life.

Q6: What should I look for when buying replacement fuel pumps for E55 AMG performance?
A6: When looking for replacement fuel pumps for E55 AMG performance, prioritize direct fitment for the W211 E55 AMG V8 5.5L, ensuring it’s an in-tank electric pump and that you get the correct left or right side module (or both). Look for comprehensive assemblies that include the fuel pump, sending unit, and strainer. Check for warranties, reputable aftermarket brands, and positive user feedback specifically from E55 AMG owners. Avoid external pumps, high-pressure direct injection pumps, or pumps with insufficient flow rates.

Q7: Is fuel pump replacement a DIY job for an E55 AMG owner?
A7: Replacing the fuel pumps in an E55 AMG can be a challenging DIY job. It often requires removing the rear seats, accessing the fuel tank, and dealing with fuel lines and electrical connections. While certainly doable for an experienced DIY mechanic with the right tools, it’s not a beginner-friendly task due to the safety risks associated with fuel and the complexity of accessing the components. Professional installation is always recommended if you’re unsure.