Marsram Ignition Coil Pack UF596 4-Pack for Toyota Corolla 1.8L — Direct-Fit, High-Conductivity Copper

The Marsram Ignition Coil Pack UF596 (4-pack) is a direct-fit replacement ignition coil set engineered to restore reliable spark and engine performance on compatible 1.8L Toyota and Scion models.

These four individual ignition coils are made to match factory fitment for a range of 1.8L L4 vehicles, offering improved conductivity and thermal resistance compared with worn or failing coils. Built with high-conductivity copper windings and a reinforced epoxy-and-engineering-plastic shell, the Marsram coils aim to address symptoms like rough idling, misfires, hard starts, and reduced fuel economy without complicated modifications. Each kit replaces OEM part numbers such as 90919-02258 and UF596, and ships with a 1-year warranty after testing for consistent quality.

How will these coils affect starting and misfire issues?

Faulty ignition coils can produce weak or inconsistent sparks that lead to long crank times, frequent misfires, or a lit check-engine light. Replacing old coils with the Marsram UF596 set restores strong, consistent spark delivery across cylinders, helping the engine start more reliably and run more smoothly.

• Restores spark strength to reduce long crank or no-start events
• Helps eliminate misfires that cause rough idle or hesitation
• Compatible with factory connectors for straightforward swap-in replacement

Will these coils improve fuel economy or performance?

When an engine fires consistently, combustion becomes more complete and predictable. By replacing degraded coils, you can often recover lost power and reduce wasted fuel caused by incomplete burns, though results vary with vehicle condition and maintenance.

• Improved combustion consistency may reduce fuel consumption
• Can restore throttle response and smoother acceleration
• May reduce transmission shift irregularities linked to engine misfires

Are these coils durable and heat-resistant for under-hood conditions?

Marsram builds the coil housings from high-strength engineering plastic and epoxy resin to resist heat-related deformation and melting. Internally, high-conductivity copper windings are used for efficient spark delivery, and the overall design is tested to meet functional durability for typical engine bay stresses.

• Epoxy resin exterior reduces thermal damage risk
• Copper windings for reliable electrical conductivity
• Manufacturing tests and a 1-year warranty cover quality concerns

Which vehicles will these coil packs fit?

This 4-piece Marsram UF596 kit is listed for several Toyota, Scion, Lexus, and Pontiac models equipped with the 1.8L inline-4 engine. Always verify fitment with the parts finder or by comparing OEM part numbers before purchase.

• Fits 2009–2017 Toyota Corolla 1.8L and 2017 Corolla iM 1.8L
• Includes compatibility for 2009–2014 Toyota Matrix and 2010–2016 Toyota Prius variants
• Also fits Lexus CT200h, Scion iM/xD, Pontiac Vibe, and Prius Plug-in/V models listed

Who this is for: The Marsram UF596 4-pack is designed for DIYers and professional technicians replacing worn or failed ignition coils on 1.8L Toyota/Scion/Lexus/Pontiac engines who want a direct-fit, tested aftermarket option. It’s suited to owners experiencing misfires, reduced power, poor fuel economy, long crank times, or frequent check-engine codes tied to ignition faults, and for anyone who prefers OEM-style plug-and-play installation with a one-year parts warranty.