Best Ignition Coil For Lexus RX350: 5 Best Choices

When my Lexus RX350 started showing signs of rough idling and hesitation on the highway, I knew exactly where to look: the ignition coils. That smooth 3.5L V6 engine demands a reliable spark, and chasing down the best ignition coil for lexus rx350 felt crucial to restoring its luxury performance. I’ve personally sorted through the top replacement options—from OEM matches to high-value aftermarket kits—so you can quickly find the right parts to get your SUV running like new again.

IMAGE	PRODUCT NAME	AMAZON LINK
	DrCax OEM Ignition Coil UF487 C1601 90919-A2007 Compatible…	View on Amazon
	Ignition Coil Pack Spark Plugs Replacement for 3.5 V6…	View on Amazon
	Marsram UF487 Ignition Coil Pack & Double Iridium Spark…	View on Amazon
	UF487 Ignition Coil & 6619 Double Iridium Spark Plug For…	View on Amazon
	BDFHYK Ignition Coil Pack UF487 and Iridium Spark Plug…	View on Amazon

DrCax OEM Ignition Coil UF487 C1601 90919-A2007 Compatible with Lexus Toyota Lotus ES350 RX350 RX450h Avalon Camry Highlander RAV4 Sienna Venza Evora – 3.5L V6 Engines – 1 Pack

The DrCax single coil is engineered specifically for those who need a direct, reliable replacement that meets or exceeds original equipment (OE) specifications. If you’re just experiencing a failure on one cylinder and prefer to replace them one by one as they fail, this coil provides reliable spark delivery and aims to fix classic problems like misfires and stalling. It’s built with strict quality control testing, ensuring it fits seamlessly into your RX350’s engine bay and restores peak performance quickly.

Key features that stand out:
– OE Standard Match: Built to match or surpass factory specifications for performance and fitment.
– Problem Solver: Designed to immediately address common ignition faults such as engine jerking, poor idling, and backfiring.
– Easy Installation: Component design matches the OE part, allowing for fast and easy installation.

Pros:
– Comes with a confident one-year warranty for peace of mind.
– Excellent build quality designed for long-term dependability.
– Direct OE replacement simplifies the selection process.

Cons:
– Sold as a single unit, requiring six separate purchases for a full replacement.

Best for: Precision replacement when only one coil has failed and you need guaranteed OE matching performance.

Expert Opinion: DrCax focuses heavily on quality control, making this an extremely trustworthy replacement for those prioritizing direct fitment and durability over a full budget kit.

Ignition Coil Pack Spark Plugs Replacement for 3.5 V6 Toyota Sienna Avalon Camry Highlander Rav4 Venza Lexus RX350 ES350 RX450h 2007 2008 2009 2010 2011 2012 2013 2014 2015, 90919-A2007, UF487, 6pc

When it’s time for a full ignition tune-up on your RX350, this 6-piece combo pack is a fantastic value solution. It provides all six coils and six pre-gapped spark plugs required for the 3.5L V6 engine, meaning you have everything needed in one box. Designed to meet or exceed OEM specifications, this kit is highly effective at eliminating hard starts, rough idling, and improving overall poor fuel economy caused by worn-out components.

Key features that stand out:
– Complete Kit: Includes 6 ignition coils and 6 spark plugs.
– Pre-Gapped Plugs: Spark plugs come pre-gapped, simplifying the installation process.
– High Standards: Produced under strict standards using premium materials to ensure reliability.

Pros:
– Excellent cost savings when replacing all coils and plugs simultaneously.
– Solves multiple performance issues (misfire, rough idle, decrease in power).
– Direct fitment for a wide range of compatible Lexus and Toyota V6 models.

Cons:
– The included spark plugs may not be high-end iridium plugs.

Best for: High-mileage RX350 owners performing a comprehensive, budget-friendly ignition system refresh.

Expert Opinion: This set offers significant convenience and financial benefit. Replacing all 6 coils and plugs simultaneously prevents future sporadic failures, making this a smart preventative maintenance move.

Marsram UF487 Ignition Coil Pack & Double Iridium Spark Plug Fit for Toyota Lexus 2005-2018 Camry Highlander Avalon Rav4 Sienna Venza RX350 ES350 RX450h 3.5L V6 Replace 90919-02251 90919-A2002 6Pcs

The Marsram kit is for the RX350 owner looking for maximized longevity and performance from their tune-up. This package includes six coils made with high-conductivity copper coil interiors and six premium Double Iridium spark plugs. Double iridium offers superior stability and corrosion resistance, resulting in a much longer service life and better engine combustion, potentially helping to enhance fuel economy and acceleration.

Key features that stand out:
– Double Iridium Spark Plugs: Offers superior stability, lifespan, and improved engine combustion over standard plugs.
– High-Quality Materials: Coils are encased in high-strength engineering plastic and epoxy resin to prevent melting from engine heat.
– Performance Focused: Designed to increase ignition speed and reduce emissions.

Pros:
– Provides improved engine performance and greater longevity due to the premium spark plugs.
– Strict testing ensures compliance or improvement over OE standards.
– Materials are selected for maximum resistance to heat and wear.

Cons:
– It sits at a slightly higher price point due to the specialized spark plugs.

Best for: Drivers seeking the best possible materials for ignition components and maximum maintenance interval extension.

Expert Opinion: Investing in double iridium plugs alongside new coils is generally worth the cost on a quality vehicle like the RX350, as it guarantees a consistent spark and superior engine health for thousands of miles.

UF487 Ignition Coil & 6619 Double Iridium Spark Plug For TOYOTA Camry Avalon Highlander RAV4 Sienna Venza/Lexus IS350 ES300h NX300h ES350 RX350 RX450h/Scion tC Replaces#C1601 90919-02255 90919-A2002

This comprehensive 6-pack kit offers exceptional reliability by focusing on material science. The ignition coils feature a stainless-steel spring with an internal ferrite noise suppressor to prevent electrical interference. Matched with high-quality Double Iridium spark plugs rated for a working life of 100,000 kilometers, this set aims to provide superior cold-start performance and a consistently smooth running engine for many years.

Key features that stand out:
– Noise Suppression: Built-in ferrite suppressor prevents radio frequency interference (RFI) which can affect vehicle electronics.
– Durable Connectors: Advanced thermoplastic connectors resist fractures caused by thermal cycling and engine heat.
– Extreme Lifespan: Double Iridium plugs are rated for extended use (around 100,000 km).

Pros:
– Excellent focus on preventing electrical interference and managing heat damage.
– Comprehensive fitment across various Lexus and Toyota 3.5L V6 models.
– Guarantees superior reliability and consistent spark delivery.

Cons:
– Instruction manual is not included, though installation is standard for this platform.

Best for: Owners who drive frequently and need ignition components optimized for high temperatures and long-distance reliability.

Expert Opinion: The inclusion of RFI suppression is a thoughtful design feature, ensuring not just engine performance but also protecting the integrity of the vehicle’s onboard electronics.

BDFHYK Ignition Coil Pack UF487 and Iridium Spark Plug 6619 Compatible with Lexus ES350 2007-2015 Lexus RX350 Toyota RAV4 Avalon Camry Toyota Sienna Toyota Coil Pack Coil for Lexus 3.5L Set of 6

BDFHYK offers a professional-grade repair kit focused on addressing the specific symptoms of high-mileage ignition failure, such as car shaking and start-up failures. Their commitment to component quality is evident, utilizing silicon steel material for the coils and sourcing materials like Japan-imported rubber and Germany-imported varnished wire. This ensures a long service life and robust performance, quickly bringing an older RX350 back to “like-new” status.

Key features that stand out:
– Professional-Grade Materials: High-quality components sourced globally (Japan rubber, Germany wire) for superior durability.
– Iridium Electrode Plugs: Ensures quick starts and powerful acceleration after installation.
– High-Mileage Solution: Specifically marketed as the solution for cars over 80,000 km experiencing performance loss.

Pros:
– Manufactured by a company with over 10 years of experience in specialized auto parts.
– Effectively resolves the most severe symptoms of aging ignition systems.
– Quality control is managed in-house from factory to customer.

Cons:
– The brand name may be less familiar than traditional OEM suppliers.

Best for: Restoring optimal performance in high-mileage Lexus RX350 models suffering from significant degradation in ignition performance.

Expert Opinion: Focusing on restoring performance in older vehicles, this kit emphasizes the quality of internal components, which is critical for maintaining consistent output in a demanding V6 engine.

Comparison Short Insights

Choosing the best ignition coil for lexus rx350 often comes down to budget and whether you need a quick repair or full preventative maintenance.

If your RX350 is approaching or past the 100,000-mile mark, purchasing a complete set of 6 coils and plugs is highly recommended. The Ignition Coil Pack Spark Plugs Replacement kit provides the best basic value for a full replacement.

For those demanding maximum longevity and superior performance, the kits from Marsram and the UF487/6619 Double Iridium pack are the clear winners. They include high-grade iridium spark plugs which are designed to last significantly longer than conventional plugs.

When focusing purely on replacing a single faulty unit while trusting factory specifications, the DrCax coil stands out due to its specific focus on OE matching and its inclusion of a generous one-year warranty.

Finally, materials matter: the BDFHYK kit highlights its use of premium sourced materials (Japan-imported rubber, etc.) ensuring that the coil insulation and components will withstand the extreme heat of the RX350 engine bay better than generic counterparts.

Final Verdict: Choosing Your Ignition Solution

When shopping for the best ignition coil for your Lexus RX350, the “best” option depends on your specific needs:

For the All-in-One Value Seeker: Go with the Ignition Coil Pack Spark Plugs Replacement (6pc). This kit offers the most economical way to replace all components necessary for a major tune-up.

For the Performance and Longevity Expert: We highly recommend the Marsram UF487 Ignition Coil Pack & Double Iridium Spark Plug set. The use of double iridium spark plugs combined with quality coils ensures a cleaner, more powerful spark that lasts for years.

For the Trustworthy Single Replacement: If you’re confident only one coil is bad and you prioritize a warranty-backed, high-quality replacement, the DrCax OEM Ignition Coil is your top choice.

Best Ignition Coil For Lexus RX350 FAQ

What are the main symptoms of a failing ignition coil in my Lexus RX350?

The most common signs that you need a new best ignition coil for lexus rx350 include engine misfiring (a feeling of stumbling or jerking, especially under acceleration), rough idling, noticeable loss of power, and decreased fuel economy. Often, the “Check Engine” light will illuminate, sometimes flashing, indicating a severe misfire.

Should I replace all six ignition coils at once in my V6 engine?

Yes, generally, it’s highly recommended to replace all six coils at once, especially if your vehicle has high mileage (over 80,000 miles). Ignition coils tend to wear out similarly over time. If one fails, the others are likely close behind. Replacing the entire set prevents repeated trips to the mechanic and ensures balanced performance across all cylinders.

How often do ignition coils typically need to be replaced on an RX350?

Ignition coils in the Lexus RX350 are durable, often lasting between 80,000 and 150,000 miles. However, this lifespan can be shortened by factors like extreme heat, faulty spark plugs (which increase the load on the coil), and driving conditions. Regular maintenance helps prolong the life of your ignition system components.

Is it necessary to replace the spark plugs when changing the ignition coils?

It’s strongly advised to replace the spark plugs simultaneously, especially when using a complete kit like those reviewed here. Worn spark plugs increase resistance, forcing the ignition coil to work harder and potentially causing premature coil failure. Pairing a high-quality best ignition coil for lexus rx350 with new plugs ensures maximum efficiency and lifespan for both parts.

Are aftermarket ignition coils reliable compared to OEM parts for the RX350?

Modern aftermarket coils, particularly those that meet or exceed OE specifications (like the DrCax or Marsram units), are highly reliable. They often use similar or even improved materials (such as better heat-resistant plastics or higher-conductivity copper wiring) while offering significant cost savings over dealership OEM parts. Always ensure the replacement part has the correct UF487 or C1601 designation for proper fitment.

Can a bad ignition coil affect my Lexus RX350’s fuel economy?

Absolutely. When an ignition coil fails, the spark plug doesn’t fire correctly, resulting in unburnt fuel being passed through the engine. The engine’s computer then attempts to compensate by adjusting the fuel mixture, directly leading to lower miles per gallon (MPG) and increased emissions. Replacing the old coils with the best ignition coil for lexus rx350 will help restore optimal fuel consumption.