Marsram Ignition Coil and Double-Iridium Spark Plug Kit for Toyota Corolla 1.8L (2009–2017) — Direct-Fit, OE Replacement

Marsram’s UF596 ignition coil paired with double-iridium spark plugs replaces worn coils and plugs on 2009–2017 Toyota Corolla 1.8L L4 engines to restore reliable ignition and consistent combustion.

If your Corolla, Prius, Matrix, or select Lexus/Scion models are showing rough idle, poor throttle response, or reduced fuel efficiency, worn coils or spark plugs are common culprits. This Marsram kit combines a high-conductivity copper coil wrapped in durable epoxy housings with double-iridium plug electrodes designed for longer life and stable spark. The components are engineered to meet OE fit and function and replace several OEM part numbers, making them a direct-fit service solution for many 1.8L L4 Toyota-family vehicles.

Which vehicles and part numbers does this kit fit?

This Marsram set is compatible with a range of 1.8L L4 models from 2008–2017. It replaces multiple ignition coil and plug part numbers used across Toyota, Lexus, Scion, and Pontiac Vibe platforms, simplifying selection for technicians and DIYers.

• Applications include 2009–2017 Toyota Corolla 1.8L L4, 2010–2015 Prius 1.8L, 2012–2017 Prius V 1.8L, 2011–2016 Lexus CT200h, Scion IM and XD, Toyota Matrix, and 2009–2010 Pontiac Vibe.
• Replaces UF596, UF-596, UF619, 90919-02258, 90919-02252, 90919C2005 and other OEM codes.
• Always verify fit with your vehicle’s year, make, model and the seller’s fitment tool before ordering.

How do these ignition coils improve starting and performance?

The coils use a high-conductivity copper wind and robust housing to deliver consistent secondary voltage to the spark plugs. That steadier spark helps reduce misfires and supports faster, more reliable engine starts without altering factory ignition timing.

• Epoxy and engineering-plastic exterior resists heat and engine-bay exposure.
• Copper coil windings provide improved conductivity for consistent spark delivery.
• OE-style electrical connections and mounting points for direct replacement.

What benefits do the double-iridium spark plugs provide?

Marsram’s spark plugs feature double iridium electrodes and a corrosion-resistant center to maintain a stable gap and efficient combustion over time. The design targets longer service life and less gap erosion than conventional plugs, helping the engine maintain smoother operation and steady fuel burn.

• Double iridium electrodes reduce wear and preserve spark-gap geometry.
• Optimized center electrode supports complete combustion and consistent ignition.
• Corrosion-resistant materials limit degradation from fuel and combustion byproducts.

Is installation straightforward for a DIYer or mechanic?

Yes — the kit is manufactured to OE specifications so coils and plugs install using factory mounting points and connectors. Basic hand tools and torque guidance are all that’s required; however, follow proper torque and gap recommendations and take safety precautions when working on the ignition system.

• OE-matching fit minimizes modification or adaptor needs.
• Strict testing and quality materials support reliable, safe installation.
• Replace coils and plugs as a set for consistent performance across cylinders.

Who is this for: This Marsram UF596 ignition coil and double-iridium spark plug set is aimed at owners and mechanics of Toyota-family 1.8L L4 vehicles from the 2008–2017 era who need a direct-fit replacement for failing ignition coils or worn spark plugs. It’s suitable for DIY enthusiasts comfortable with basic engine service and for professional shops looking for a cost-effective OE-compatible option that replaces multiple OEM part numbers.