KacuYelin Ignition Coil Pack & 4 Double Iridium Spark Plugs Kit for Toyota/Lexus 2.5L–2.7L — Plug-and-Play, Long-Life

The KacuYelin UF487 ignition coil pack combined with four double iridium spark plugs is a plug-and-play replacement kit engineered to restore reliable spark and consistent combustion for compatible 2.5L and 2.7L Toyota and Lexus engines.

If your Toyota Camry, RAV4, Highlander, Venza, Sienna or Scion tC (selected years and gasoline models) is showing rough idle, poor throttle response, or increased fuel use, worn coils and plugs are common culprits. This kit pairs a high-quality coil pack (interchanges UF507/UF487/UF630) with long-life double iridium spark plugs to deliver steady high-voltage output and focused sparks that improve combustion stability. The parts are produced in TS16951-certified facilities and designed to match OEM specifications for direct replacement.

Which vehicles and engines does this KacuYelin kit fit?

This set fits a range of Toyota and Lexus four-cylinder gasoline engines across model years noted in the listing. It is intended for gas-only models (not FHEV/hybrid variants) and for specific model-year ranges—confirm fitment before ordering.

• 2010–2017 Toyota Camry 2.5L L4 (gas models only)
• 2009–2018 Toyota RAV4 2.5L L4 (gas models only)
• 2009–2019 Toyota Highlander 2.7L L4; 2009–2016 Toyota Venza 2.7L L4
• 2011–2016 Scion tC 2.5L L4 (U.S. built) and 2011–2013 Toyota Sienna 2.7L L4

How do the coil pack and double iridium plugs improve engine performance?

The coil uses high-purity copper windings, a silicon steel core and heat-resistant epoxy to maintain consistent high-voltage delivery to the plugs. The double iridium plugs feature laser-welded electrodes and high-grade ceramic for precise spark and extended service life, helping the engine fire more reliably under varied conditions.

• Stable high-voltage output from durable coil materials
• 360° laser-welded iridium electrodes for concentrated spark
• High alumina ceramic body for heat resistance and insulation
• Longer service life—designed for up to 100,000–120,000 miles

Will this kit affect fuel economy, emissions, or drivability?

Properly functioning coils and plugs promote more complete combustion, which can reduce misfires, lower emissions and improve throttle response. While exact gains vary by vehicle condition, users commonly see improved MPG and smoother operation after replacing aging ignition components.

• Optimized ignition timing and more complete combustion
• Potential fuel efficiency improvements when worn parts are replaced
• Reduced risk of start-up failures, power loss and rough idling
• Parts produced to meet EPA-related standards for emissions support

What should you check before buying and installing this replacement kit?

Confirm your vehicle’s year, engine size, submodel and aspiration match the fitment list, and compare the old coil’s OE/reference numbers. Appearance can vary between suppliers, so matching part numbers and fitment is important to ensure proper installation.

• Enter Year, Brand, SubModel and Engine into the fitment checker
• Verify OE numbers like UF487, UF507, UF630 or listed manufacturer references
• Note that housing design may differ while remaining compatible
• Direct plug-and-play for compatible vehicles—no modification typically required

Who this is for: Drivers who own compatible Toyota or Lexus 2.5L/2.7L gasoline models and want a high-quality, long-lasting ignition coil and spark plug replacement kit. It’s aimed at DIYers and professional mechanics seeking OEM-compatible performance parts to reduce misfires, restore throttle response, and extend ignition component life. If you’re unsure about fit, verify vehicle details and OE numbers before ordering or consult a technician for fitment confirmation.