DOWYTA Ignition Coil and Spark Plug Kit for Toyota Tundra 2010–2019 — 8‑Pack Upgraded Coils for V8 4.6–5.7L, Restores Smooth Idle

These DOWYTA 8 upgraded ignition coils and spark plugs replace factory units on V8 Toyota and Lexus 4.6–5.7L engines to restore reliable spark and improve engine efficiency.

If your Tundra, Sequoia, Land Cruiser or compatible Lexus is showing misfires, rough idle, reduced power, or higher fuel use, worn coils and plugs are often the culprit. This kit supplies eight matched ignition coils and spark plugs engineered with improved materials and thermal design to help recover consistent ignition across all cylinders. The set is sold as a direct-replacement pack intended for easy swap-in of original parts, with part numbers cross-referenced for fitment confidence.

Which models and years will these coils and plugs fit?

These DOWYTA components were engineered to be compatible with a wide range of Toyota and Lexus V8 models. Use the vehicle and engine size to verify fitment before purchasing, and consult the part numbers if you need to match OEM references.

• Designed for Toyota Tundra 2010–2019 (4.6L and 4.7L variants), plus earlier and later years for certain engines.
• Fits Toyota Sequoia (2008–2021 5.7L; 2010–2012 4.6L/4.7L) and Land Cruiser 2008–2021 5.7L.
• Compatible with Lexus GX460 (2010–2019 4.6L), LS460 (2007–2017 4.6L), LS600h (2008–2016 5.0L) and LX570 (2008–2021 5.7L).
• Cross-referenced part numbers include UF487, 90919-02251, 90919-A2002, 90919-A2004, 90919-A2003, 9091902257 and 0986AG0501 for easier verification.

How do these upgraded coils and plugs improve engine performance?

Upgraded components focus on delivering a stronger, more consistent spark and better heat management, which helps the combustion process run closer to design specifications. While individual results vary, customers typically notice smoother idling, fewer misfires and more responsive throttle behavior after installation.

• Imported copper windings for improved conductivity and durable current transfer.
• Reinforced plastic housings designed for efficient heat dissipation and longer service life.
• Matched eight-piece kit ensures balanced ignition across all cylinders for consistent performance.
• Addresses common ignition symptoms such as increased fuel usage, misfires, and check-engine triggers.

What should I know about installation and compatibility with OEM parts?

These coils and plugs are manufactured to be direct replacements for the referenced part numbers, allowing for straightforward swap-in installation in most cases. Basic hand tools and a torque wrench are typically sufficient; follow factory torque specs and replacement intervals to avoid damage during installation.

• Sold as an 8-pack to replace all coils simultaneously and maintain ignition balance.
• Fits engines with 8 cylinders (4.6L–5.7L applications listed above); verify engine size first.
• Installation tip: replace all coils and plugs together to prevent uneven wear and ensure consistent performance.
• Refer to vehicle service manual for torque specs and replacement procedure to avoid connector or housing damage.

What durability and support features come with this DOWYTA kit?

DOWYTA builds these coils and plugs using upgraded internal wiring and a heat-managing housing to extend life under heavy engine loads. The vendor also provides after-sales support to address quality concerns or fitment questions after purchase.

• Quality materials and manufacturing focused on improved thermal stability and electrical reliability.
• After-sales service available for product issues or warranty-related inquiries.
• Full eight-piece replacement reduces the chance of recurrence due to mixed old/new components.

Who is this for? This eight-piece DOWYTA ignition coil and spark plug kit is aimed at owners of Toyota and Lexus V8 vehicles (4.6L–5.7L) who want to replace aging ignition components with a full matched set. It suits DIY mechanics and professional technicians seeking OEM-fit performance, improved ignition reliability, and straightforward fitment using the supplied part-number cross-references.