KacuYelin UF487 Ignition Coil Pack with 4 Double-Iridium Spark Plugs — Compatible Toyota/Lexus 2.5L & 2.7L, OEM Fit, Improved Fuel

KacuYelin's UF487 ignition coil pack paired with four double-iridium spark plugs is a drop-in replacement kit engineered to restore reliable ignition and improve fuel efficiency for compatible 2.5L and 2.7L Toyota and Lexus engines.

This all-in-one ignition kit combines precision-wound coil packs and high-durability double-iridium spark plugs designed to meet OEM fit and performance requirements. The parts are manufactured in TS16951-certified facilities using corrosion-resistant materials and high-purity components intended for consistent high-voltage delivery and long-lasting spark performance. The kit targets common ignition problems such as misfires, rough idle, hard starts, and declining fuel economy on specific Toyota/Lexus 4-cylinder models.

Which vehicles will this UF487 coil and double iridium plug set fit?

This kit is built to match OEM specifications for many Toyota and Lexus 2.5L and 2.7L engines. It fits a range of model years and submodels listed by the manufacturer—always verify vehicle year, engine size, and aspiration before ordering to ensure compatibility.

• Compatible models include select years of Toyota Camry, RAV4, Highlander, Venza, Sienna, Scion tC, and Lexus ES300h.
• Designed for gas engines; not compatible with hybrid FHEV variants unless explicitly stated.
• OE-reference numbers supported: UF507, UF487, UF630 plus several 90919 and 6731 series OEM codes.

How do the double-iridium spark plugs improve engine performance?

The plugs use a high-iridium electrode design and continuous laser welding to create a concentrated spark that resists wear. That precision results in steadier combustion, which can translate to smoother idling and more consistent throttle response under typical driving conditions.

• Iridium content and robust welding increase electrode lifespan up to 100,000–120,000 miles under normal use.
• High-alumina ceramic insulator for improved temperature resistance and insulation integrity.
• Smoother ignition helps optimize combustion timing for better miles-per-gallon and lower emissions.

What are the construction advantages of the KacuYelin ignition coil pack?

KacuYelin builds the coil pack with high-purity copper windings, a silicon steel core and heat-resistant epoxy for stable high-voltage output. These materials reduce oxidation and corrosion risk, supporting more consistent spark delivery and lowering the chance of ignition failure.

• German-imported copper windings for efficient electrical transfer.
• High-temperature epoxy and corrosion-resistant components for longer service life.
• Engineered to match OEM electrical and mechanical fit for plug-and-play replacement.

Will replacing coils and plugs in this kit reduce emissions or fuel costs?

While results depend on vehicle condition and driving habits, replacing worn coils and plugs often restores proper combustion balance and can reduce fuel consumption and emissions. KacuYelin reports optimized engines see fuel efficiency improvements and fewer ignition-related faults when the ignition system is renewed.

• Properly timed and consistent sparks can improve combustion efficiency.
• Less misfiring means reduced unburned fuel in the exhaust stream.
• Exact savings vary, but users commonly notice improved throttle response and smoother starts.

Who is this for: This KacuYelin UF487 coil pack and double-iridium spark plug kit is suited for DIY mechanics, professional technicians, or owners of compatible Toyota and Lexus models who need an OEM-fit ignition replacement. It’s especially helpful for vehicles showing misfires, decline in fuel economy, hard starts, or owners seeking longer-life plugs and reliable coil performance without modifying the engine control system. Always confirm fitment with your vehicle’s year, engine displacement, and submodel before purchase.