4STEED MOTORS Ignition Coil Pack and Iridium Spark Plug Kit — Set of 4 for Toyota/Scion/Lexus, Restores Ignition Reliability

Premium set of four ignition coil packs plus four iridium spark plugs engineered to restore reliable ignition for compatible Toyota, Scion and Lexus models.

This kit from 4STEED MOTORS replaces common OEM numbers (UF-596, UF-619, 90919-02258, 90919-01275, 93501) and supplies four matched ignition coils and four iridium spark plugs in one convenient package. The coils use stainless-steel cores and durable polymer housings for mechanical stability and corrosion resistance, while the iridium spark plugs offer a fine electrode for consistent sparking under varied driving conditions. Before installation, verify vehicle compatibility and follow safety steps like disconnecting the battery.

How will these ignition coils and plugs affect engine starting and smoothness?

New coil packs and fresh spark plugs often improve ignition reliability, reduce misfires, and can restore smoother idle and more consistent throttle response. They deliver a stronger, more focused spark compared with worn coils and fouled plugs, which helps combustion happen more consistently across all cylinders.

• Set of four matched coils ensures balanced firing across cylinders
• Iridium plugs provide stable spark and slower electrode wear
• Corrosion-resistant coil housings resist long-term exposure
• May reduce rough idle and intermittent misfire symptoms when used correctly

Which vehicles are compatible with this 4STEED MOTORS ignition kit?

The kit is specified for a range of Toyota, Scion and Lexus models across several model years—always cross-check part numbers and vehicle fitment before ordering. Compatibility covers popular compact and hybrid models often using the listed OEM replacement numbers.

• Corolla: 2009–2019 (varies by engine and trim)
• Matrix: 2009–2013; Scion XD: 2008–2014; Scion IM: 2016; Corolla iM: 2017–2018
• Prius: 2010–2015; Prius v: 2012–2017; CT200H: 2011–2017; C-HR: 2018–2021
• Confirm compatibility by matching vehicle year, engine code and OEM part numbers listed

What are the construction and quality features of the coils and spark plugs?

The ignition coils are built around a stainless-steel core with a high-grade plastic overmold that improves seal integrity and mechanical durability. The spark plugs are iridium-tipped for a fine, long-lasting electrode that maintains consistent spark performance over time.

• Stainless-steel core resists deformation and supports longevity
• Plastic overmold offers corrosion resistance and vibration damping
• Iridium spark tips yield high ignition stability and slower erosion
• Kit packaged as four coils plus four OEM-style spark plugs for full-bank replacement

How should I install these parts and what precautions are recommended?

Installation is straightforward for technicians and experienced DIYers but requires basic precautions. Always disconnect the vehicle battery, follow torque specs for plug installation, and inspect wiring harnesses and boots for damage before reuse.

• Disconnect battery before starting to avoid electrical damage or shocks
• Use correct torque for spark plugs to prevent sealing issues or thread damage
• Inspect ignition boots, connectors and wiring for wear; replace if necessary
• Have a trusted mechanic confirm compatibility if unsure about fitment

Who is this for: This 4STEED MOTORS ignition coil and spark plug set is ideal for owners of compatible Toyota, Scion and Lexus models who need a full-bank replacement to address misfires, weak ignition, or routine maintenance. It also suits independent mechanics and fleet managers looking for a cost-effective OEM-compatible kit with durable construction. Always verify fitment against your vehicle's VIN or engine code and consult a qualified technician for installation if you lack mechanical experience.