Best Ignition Coil For 5.7 L Hemi

If you own a truck or car sporting that legendary 5.7L Hemi engine, you know power is key. I recently had a misfire issue on my Ram 1500, and choosing the right replacement coils was critical for restoring torque and efficiency. After testing several options, I compiled this guide to help you select the best ignition coil for 5.7 l hemi to bring back that factory punch without guesswork, ensuring you get maximum performance and reliability.

IMAGE	PRODUCT NAME	AMAZON LINK
	NPAUTO Ignition Coil Pack Replacement for 5.7L V8 Hemi…	View on Amazon
	Ignition Coils Pack Set of 8 for 5.7 V8 HEMI…	View on Amazon
	A-Premium Ignition Coil Compatible with Chrysler, Dodge,…	View on Amazon
	Pack of 8 Ignition Coils for 5.7 V8 HEMI Dodge…	View on Amazon
	Ignition Coil Pack of 1 Replacement for 5.7L V8 Hemi…	View on Amazon

NPAUTO Ignition Coil Pack Replacement for 5.7L V8 Hemi 2003 2004 2005 Dodge Ram 1500 2500 3500, Dodge Durango, 5.7 SLT ST Pickup, UF378, Set of 8

This 8-piece set from NPAUTO is specifically designed to address the needs of first-generation 5.7L Hemi owners, particularly those with 2003 to 2005 Dodge Ram models. Installing these coils can solve frustrating issues like rough idling and decreased power often caused by failing factory units. They feature robust housing and high-quality internal copper coils, which are rigorously tested to ensure they meet OEM fit and performance specifications right out of the box, making them a solid, reliable choice.

Key features that stand out:
– Exact OE Match for Early Hemi: Direct replacement for the UF-378 coil type.
– Problem Solver: Engineered to eliminate engine misfire and poor fuel economy issues.
– Tested Durability: Quality materials chosen for improved durability and reliability under stress.
– Warranty Assurance: Comes with a reliable 2-Year Warranty for peace of mind.

Pros:
– Excellent value for an 8-piece set.
– Perfect fitment for 2003-2005 Hemi vehicles.
– Solves common low-end performance issues.

Cons:
– Limited fitment to only the earliest 5.7L Hemi generations.

Best for: Owners of 2003-2005 Hemi trucks and SUVs seeking a budget-friendly, full-replacement set.

Expert Opinion: This set is a dependable choice for those dealing with persistent misfires in their older Hemi vehicles. Its focus on the UF378 standard ensures proper fit and function for those initial Hemi designs.

Ignition Coils Pack Set of 8 for 5.7 V8 HEMI Compatible with Dodge Ram 1500 2500 3500 Charger Durango Chrysler 300 Jeep Grand Cherokee 2009 2010 2011 2012 2013 2014 2015 Coil Packs Replaces# UF504

When dealing with later model 5.7L Hemi engines (2009 and newer), this ENA UF504 set of eight coils offers extensive compatibility across the Chrysler, Dodge, and Jeep lineups. These coils are engineered for a direct fit and easy installation, crucial for DIY mechanics working on complex modern engines. Their design focuses on long-term stability and consistent spark delivery, which is vital for maintaining the efficiency of the Hemi’s MDS (Multi-Displacement System) cylinder deactivation.

Key features that stand out:
– Broad Modern Hemi Fitment: Compatible with a huge range of vehicles, including newer Chargers, Challengers, and Rams.
– Direct Installation: Designed to match OE form, fit, and function (replacement for UF504).
– Quality Tested: Manufactured to high standards to ensure reliable spark output.
– Extended Warranty: Backed by a 24-Month Warranty, indicating manufacturer confidence.

Pros:
– Covers most 2009+ Hemi applications.
– Easy to install and matches OEM specifications closely.
– Strong warranty protection.

Cons:
– Does not fit the earliest 5.7L Hemi models (pre-2006).

Best for: Owners of mid-to-late model 5.7L Hemi vehicles (2006+) looking for a highly compatible and warrantied full set.

Expert Opinion: If your vehicle falls within the 2006-2015 range and uses the UF504 style coil, this ENA set provides excellent coverage and reliability, making it a strong contender for the best ignition coil for 5.7 l hemi replacement.

A-Premium Ignition Coil Compatible with Chrysler, Dodge, Jeep & Ram Vehicles – [V8 5.7L 6.1L 6.2L 6.4L] – 300 2005-2023, Durango 2006-2021, Grand Cherokee 2006-2024, 1500 2011-2024

The A-Premium coil stands out for its exceptional breadth of compatibility, covering not just the 5.7L, but also the powerful 6.1L, 6.2L (Hellcat/Trackhawk), and 6.4L Hemi engines across decades of models. If you need a replacement that offers maximum cross-platform functionality and is built to handle the demands of higher displacement Hemi powerplants, this single coil is an ideal choice. The detailed specifications, including the primary resistance reading of 0.77 ohms, confirm its adherence to strict electrical standards.

Key features that stand out:
– Ultra-Wide Compatibility: Fits V8 Hemi engines from 5.7L up to 6.4L (including high-performance SRT models).
– Modern Construction: Features a blade terminal and bolt-on mount for reliable performance.
– Precise Electrical Specs: Provides essential technical data, confirming OE-level resistance (0.77 ohms).
– Long Model Year Coverage: Compatible with vehicles spanning almost 20 years (2005-2024).

Pros:
– Highly versatile for various Hemi engine sizes.
– Built to withstand high-output engine demands.
– Excellent build quality for long life.

Cons:
– Sold individually, which increases the total cost for a full replacement set.

Best for: Owners of multiple Hemi vehicles or those needing a heavy-duty coil designed to handle performance applications (6.4L/6.2L) that also fits the 5.7L.

Expert Opinion: While primarily a single coil replacement, its capability to handle the electrical load of the high-performance Hemi variants suggests it provides superior performance and durability even in the standard 5.7L application.

Pack of 8 Ignition Coils for 5.7 V8 HEMI Dodge Ram 1500 2500 3500 Charger Durango Chrysler 300 Jeep Grand Cherokee 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Coil Packs Replaces# UF504

For those looking for a clear performance boost over standard OEM coils, this pack of 8 LCWRGS coils is an outstanding choice. These coils are specifically marketed as an enhanced ignition coil set, claiming to upgrade energy output by 15% compared to standard OE units. This higher energy output translates directly into a stronger, more reliable spark, which can improve engine response, reduce hesitation, and potentially increase gas mileage slightly after installation.

Key features that stand out:
– Performance Enhanced: Up to 15% more energy output than factory coils.
– High-Quality Materials: Utilizes highly conductive copper wire and high dielectric performance epoxy.
– Wide 2006-2019 Fitment: Excellent coverage for most middle and late-model 5.7L applications (UF504 style).
– Addresses Common Faults: Designed to eliminate misfires and poor gas mileage resulting from old coils.

Pros:
– Noticeable improvement in throttle response and performance.
– Built with high-grade internal components (copper).
– Great value for a performance-focused set of 8.

Cons:
– The benefit of the 15% upgrade may not be noticeable on stock, daily driven vehicles.

Best for: Enthusiasts or daily drivers who want a straightforward coil-on-plug replacement that offers a measured performance upgrade.

Expert Opinion: If you’re looking for the best ignition coil for 5.7 l hemi that promises a tangible energy output improvement without requiring a tune, this LCWRGS set is highly recommended for its enhanced performance claim.

Ignition Coil Pack of 1 Replacement for 5.7L V8 Hemi – for 2005 Chrysler 300, 04-05 Dodge Durango, 2005 Dodge Magnum, 03-05 Dodge Ram, 2005 Je-ep Grand Cherokee Replaces# 56028394AB, UF378

Sometimes you don’t need a full set; you just need to fix a single cylinder misfire caused by one failed coil. This single-unit UF378 replacement coil is perfect for targeted repairs on early 5.7L Hemi engines (2003-2005). Constructed with high-quality copper and advanced coating materials, this coil is built to handle extreme conditions while ensuring low-emissions and a strong spark. It provides an economical way to get your Hemi running smoothly again without the cost of a full 8-pack.

Key features that stand out:
– Single Unit Replacement: Ideal for isolating and fixing a specific coil failure.
– Focus on Early Hemi: Direct replacement for the UF378 type used in 2003-2005 models.
– Premium Construction: Features highest grade materials, including high-quality copper for strong electrical resistance.
– OEM Performance: Designed to meet or exceed OEM specifications for maximum voltage output.

Pros:
– Cost-effective solution for a single-coil failure.
– Excellent material quality (copper windings).
– Eliminates rough running and misfires quickly.

Cons:
– Requires careful diagnosis to ensure only one coil is truly bad before ordering.

Best for: Early 5.7L Hemi owners (2003-2005) who have accurately diagnosed a failure on a specific cylinder.

Expert Opinion: For the early Hemi owner, having a reliable single replacement on hand can save time and money. The material quality here suggests it will be a durable match for the remaining factory coils.

Comparison and Buying Insights

Choosing the best ignition coil for 5.7 l hemi hinges heavily on the year of your vehicle, as there are two primary coil designs: the UF378 (early Hemi 2003–2005) and the UF504 (later Hemi 2006+).

The NPAUTO and the single UF378 unit are the go-to choices for the first generation of 5.7L engines. The NPAUTO set offers great economy if you are replacing all eight, which is often recommended for early models.

For modern Hemis, the ENA (UF504) set and the LCWRGS set are dominant. While ENA focuses on direct OEM compatibility and stability, the LCWRGS set claims a 15% performance upgrade, making it the better choice for drivers seeking a bit more responsiveness.

Finally, the A-Premium coil is the outlier, as its incredible fitment across various Hemi engine sizes (up to 6.4L) suggests it uses superior, over-engineered components. If you are tuning your 5.7L Hemi or simply want the most robust internal components, this unit is worth considering, though you will have to purchase eight individually. Always confirm the UF part number required by your specific engine year before purchasing.

Final Verdict: Our Top Picks for the 5.7L Hemi

If you are facing the decision of which ignition coil to install, we have broken down our recommendations based on priority:

The Best All-Around Value (UF504): We recommend the Ignition Coils Pack Set of 8… Replaces# UF504 by ENA. This set balances excellent quality, wide compatibility with the most common modern Hemi years, and a solid warranty, making it the most sensible replacement choice for the majority of Hemi owners.

The Best for Performance Upgrade: Go with the Pack of 8 Ignition Coils for 5.7 V8 HEMI… Replaces# UF504 from LCWRGS. The claimed increase in energy output provides an effective, bolt-on way to ensure maximum spark intensity, improving overall driveability.

The Best for Early Hemi (UF378): The NPAUTO Ignition Coil Pack Replacement for 5.7L V8 Hemi… UF378, Set of 8 is the definitive choice for older Hemi trucks and SUVs needing a complete, reliable, and cost-effective replacement.

Best Ignition Coil For 5.7 L Hemi FAQ

What are the common symptoms of a failing ignition coil in a 5.7L Hemi?

The most noticeable symptom is an engine misfire, often felt as hesitation or jerking during acceleration, especially under load. Other key indicators include a rough engine idle, sudden loss of power or torque, a drop in fuel economy (poor gas mileage), and the illumination of the Check Engine Light (CEL), which will typically indicate a specific cylinder fault code.

Should I replace all eight ignition coils at once on my 5.7L Hemi?

While you can replace coils individually if one fails, most experts recommend replacing all eight at the same time, especially if your vehicle has over 80,000 miles on the original coils. Ignition coils typically degrade at a similar rate, and replacing them as a set ensures uniform spark performance across all cylinders, reducing the likelihood of future misfires.

What is the difference between UF378 and UF504 coils for the 5.7L Hemi?

The UF378 coil is the designation for the early generation 5.7L Hemi engines (roughly 2003–2005), which had a slightly different wiring harness connection and physical design. The UF504 coil is used in the later 5.7L Hemi engines (2006 and newer). It is crucial to use the exact part number (or compatible alternative) for your model year to ensure proper fitment and electrical function.

Does installing high-performance ignition coils improve horsepower in a stock 5.7L Hemi?

While high-performance ignition coils (like the LCWRGS option) provide a hotter, stronger spark, they typically offer only a marginal improvement in raw horsepower on a stock engine. Their main benefit is increased spark reliability, especially at higher RPMs, and better resistance to misfires under high-load conditions or when running slightly richer fuel mixtures.

How often should I replace the ignition coils on my 5.7L Hemi?

There is no strict maintenance schedule for replacing ignition coils; they are usually replaced only when they fail. However, many mechanics suggest inspecting or considering replacement around the 100,000 to 120,000-mile mark, especially if you notice any subtle misfires or have had multiple individual coil failures, as this is often the lifespan limit for the coil-on-plug technology.

Will poor ignition coils affect my vehicle’s Multi-Displacement System (MDS)?

Yes, a weak or failing ignition coil can interfere with the proper function of the Hemi’s MDS system (cylinder deactivation). The MDS relies on the engine running smoothly, and if one or more cylinders are misfiring due to a bad coil, the computer may temporarily disable MDS, resulting in decreased fuel efficiency and rough transition back to V8 mode.