UF596 Ignition Coil & 93501 Double Iridium Spark Plug Kit - Reliable

In this review the UF596 ignition coil and 93501 double iridium spark plug kit is evaluated for owners of select Toyota, Lexus, Scion and Pontiac 1.8L and 2.0L engines. The bottom line: this kit is for drivers who want a straightforward, value-minded replacement that restores smooth idle and reliable cold starts. The reviewer found the matched coil packs and double iridium plugs address common misfire and rough-idle symptoms and offer an easy swap for compatible vehicles, with the spark plugs promising long life and the coils built to replicate OE fit and electrical performance.

Key Features

• Vehicle compatibility: Covers a wide range of Toyota, Lexus, Scion and Pontiac 1.8L and 2.0L engines, making it easy to find a direct replacement.
• Matched ignition set: The kit contains four ignition coil packs and four double iridium spark plugs, so the entire bank can be serviced at once for consistent performance.
• Double iridium plugs: The spark plugs use double iridium construction for longer service life and stable spark delivery, which helps with fuel economy and reliable starts.
• OE-style fit: Each coil is made to match or improve on OE design, which simplifies installation and maintains proper electrical transfer to the spark plugs.
• Noise suppression: Internal ferrite noise suppressors and stainless-steel springs aim to reduce radiofrequency interference and deliver a consistent spark.

Who It's For

This kit is well suited for DIY mechanics and independent shops servicing 2008-2019 models listed in the compatibility notes who need a full set of coils and plugs in one purchase. It is particularly useful when symptoms point to misfires, rough idle, loss of power or degraded fuel economy and the owner prefers replacing the entire ignition bank rather than swapping single components.

Drivers who expect factory lifetime durability without occasional variability in lifespan should be cautious; some customers reported shorter service life for coils in a few cases, so those who require OEM warranty coverage or dealer-only parts may want to compare options before buying.

Pros & Cons

Pros

• Good value: includes four coils and four double iridium plugs for a complete bank replacement at a competitive price.
• Easy installation: OE-style fit and connector design make swaps straightforward for most DIYers.
• Improved cold-start and smoother running: customers report restored smoothness and better throttle response after installation.

Cons

• Variable longevity: while many note good durability, a minority of users reported coils failing within months, so lifespan can vary.

Specifications

Our Verdict

The UF596 and 93501 kit is a practical, cost-effective way to refresh an ignition bank on compatible Toyota, Lexus, Scion and Pontiac 1.8L/2.0L engines. It restores smoother idling and cold-start reliability while offering the convenience of matched coils and long-life double iridium plugs. Buy it if you want an affordable, easy-to-install replacement set; those needing guaranteed OEM lifespan or dealer support should weigh that need against the kit's value.

Frequently Asked Questions

Does this kit include coils and spark plugs for four cylinders?
Yes, the package contains four ignition coil packs and four double iridium spark plugs for a complete bank replacement.

Will these parts fit my Corolla or Prius?
They are compatible with a range of Toyota Corolla, Matrix, Prius and Prius V model years listed in the product compatibility notes; check the vehicle list or the second product image to confirm exact fit.

Is installation difficult for a DIYer?
Installation is generally straightforward thanks to OE-style fit and connectors, and many users report completing the job quickly with common hand tools.