X4XZ Ignition Coil & Double-Iridium Spark Plug Kit, 4-Pack for 2007–2017 Jeep Compass (2.0L/2.4L)

Complete 4-pack ignition coil and double-iridium spark plug kit engineered to restore reliable spark and smoother running for 2.0L and 2.4L Jeep Compass engines (2007–2017) and many Dodge, Chrysler, and Patriot/Compass/Caliber models.

This X4XZ UF557 & 4503 kit pairs four ignition coil packs with four double-iridium spark plugs to replace worn ignition components in a range of 2.0L and 2.4L four‑cylinder engines. Every part is designed to meet or improve on OE fit and function, giving consistent spark delivery, reduced radio interference, and longer service life from the iridium electrodes. The kit replaces OE numbers including UF557 and 4503 and several aftermarket cross-references, making it an economical option for tune-ups and repairs.

Will this kit fit my vehicle and which engines are covered?

This kit is built for 2.0L and 2.4L naturally aspirated four-cylinder engines found across multiple models and years. Always verify compatibility by checking the vehicle year, engine size, and OE part numbers against the listing before purchase.

• Directly compatible with 2007–2016 Jeep Compass (2.0L/2.4L) and Patriot (2.0L/2.4L).
• Covers 2008–2014 Dodge Avenger and 2007–2012/2009 Caliber/Journey 2.4L variants listed in the product images.
• Cross-references OE numbers UF557, 4503, and replacements like 5C1644, C1587, 4606824AB/AC.

How do the double iridium plugs and coils improve performance?

The double iridium spark plugs use durable fine electrodes that maintain a strong, consistent spark over a longer lifespan, while the ignition coils are designed to deliver high voltage reliably. Together they aim to reduce misfires, improve idle stability, and maintain efficient combustion without altering engine tuning.

• Double iridium tips resist wear for extended service life (estimated long-range durability).
• Stainless-steel coil springs and ferrite noise suppressor minimize radio frequency interference.
• Thermoplastic coil connectors resist heat-related cracking for consistent electrical contact.

What should I expect during installation and maintenance?

Swap the faulty coils and plugs one bank at a time to preserve timing and ignition sequence. The kit is supplied without a printed manual but matches OE mounting and electrical connectors for straightforward bolt-on replacement with basic hand tools.

• Recommended: replace coils and plugs in matched sets to avoid uneven performance.
• Simple hand tools and torque wrench required; follow vehicle torque specs for plugs and coil bolts.
• Inspect ignition harness and boot seals while installing to prevent future issues.

Who this is for: This X4XZ UF557 & 4503 kit is aimed at DIY mechanics and independent shops handling spark-related drivability problems on 2.0L and 2.4L Chrysler‑family engines. If your vehicle shows symptoms like intermittent misfires, poor idle, or decreased throttle response, and it matches the compatibility list, this economical 4-pack provides replacement coils and long-life iridium plugs in one purchase. Backed by one-year product support and 24-hour customer service from X4XZ, it’s a practical choice for routine ignition maintenance and midlife tune-ups.