TRQ Ignition Coil Set Compatible with 2004-2019 Toyota/Scion - 4 Piece

In this review the TRQ ignition coil set is evaluated for drivers who need a quick, affordable replacement for misfiring or weak-spark engines on select Toyota and Scion models. The bottom line: this 4 piece performance coil kit offers noticeably improved throttle response and consistent fitment for L4 1.5L engines, making it a practical choice for DIYers and independent shops that want a straightforward swap. The review focuses on real-world install ease, measured benefits to drivability, and the warranty terms to help decide whether these coils are the right match for your vehicle.

Key Features

• 4 Piece Kit: Includes four performance ignition coils so you can replace all cylinders at once for uniform spark delivery and consistent engine behavior.
• Performance Grade: Designed for improved energy transfer to spark plugs, which can enhance throttle response and smooth acceleration.
• High Temperature Epoxy: Encapsulation intended to extend service life by protecting internal components from heat and vibration in the engine bay.
• Direct Fitment: Engineered to fit L4 1.5L engines used in Toyota Prius, Prius C, Yaris, Echo and Scion xA/xB for an easy replacement without modification.
• Visible Color: Red ignition coils provide a distinct visual indication of the upgraded components during installation and inspection.
• Manufacturer Warranty: Covered by a 2-year / 24,000-mile warranty that protects the cost of the product itself if defects appear.

Who It's For

This coil set is best for owners of 2000-2019 Toyota and Scion models with the 1.5L L4 engine who want a low-cost performance-minded replacement that installs like the original. Mechanics and experienced DIYers will appreciate the direct fit and the ability to swap all four coils together to restore even firing across cylinders.

It is less suited for drivers who demand long-term covered labor or extensive durability guarantees; the warranty covers the product only, not labor or consequential damage, and some users have reported early failures so those needing extended reliability backing should consider dealer-origin coils or longer-warranty options.

Pros & Cons

Pros

• Improves throttle response and drivability when replacing worn coils due to the performance design.
• Direct-fit for multiple Toyota and Scion 1.5L models, which simplifies installation and reduces shop time.
• Comes as a complete 4 piece kit so all cylinders are upgraded at once for consistent performance.
• Attractive value for money and easy to install for technicians and competent DIYers.

Cons

• Some customers report durability issues with failures within a few months, so long-term reliability can be variable.
• Warranty covers product cost only and does not reimburse labor or collateral damage, which may be a drawback for some buyers.

Specifications

Brand	TRQ
Quantity	4 Piece
Color	Red
Compatible Engines	L4 1.5L
Fitment Years	2000-2019 (select Toyota and Scion models)
Reference Numbers	9091902240, C1304, GN10312, UF316
Warranty	2 year / 24,000 mile (product cost only)

Our Verdict

The TRQ 4 piece ignition coil set is a sensible, cost-effective replacement for owners of Toyota and Scion 1.5L vehicles who want improved throttle response and easy, direct-fit installation. It represents good value when replacing worn coils, though potential buyers should weigh reported early failures and the limited warranty coverage against the lower price compared with OEM alternatives.

Frequently Asked Questions

Will these coils fit my Prius?
They are compatible with 2001-2009 Prius and 2012-2019 Prius C models that use the L4 1.5L engine; confirm your engine code and year before ordering.

Does the warranty cover installation costs?
No, the 2-year / 24,000-mile warranty covers the product cost only and does not reimburse labor or other damages.

Are these coils easy to install?
Yes, customers consistently report a straightforward, direct-fit installation that is suitable for experienced DIYers and professional technicians.