X4XZ UF557 Ignition Coil & 4503 Double Iridium Spark Plug Kit for 07-17 Jeep Compass — 4-Coil 4-Plug Direct-Fit, Improved Starting

The X4XZ UF557 ignition coil pack paired with 4503 double iridium spark plugs is a direct-fit replacement kit engineered to restore ignition performance for 2007–2017 Jeep Compass and many compatible Chrysler/Dodge models.

If your Compass or compatible vehicle is showing rough idle, reduced power, or decreased fuel efficiency, worn ignition components are a common cause. This kit contains four UF557-style ignition coils and four 4503 double iridium spark plugs designed to match or exceed original-equipment specifications for a straightforward swap and more consistent spark delivery.

How will this kit affect starting and idling?

Replacing failing coils and worn plugs often improves cold starts and steadies idle by delivering a stronger, more consistent spark across cylinders. The double iridium electrodes maintain spark integrity longer than conventional plugs while the coils are built to tolerate heat and electrical loading.

• Provides stable spark to reduce misfires and rough idle
• Double iridium plugs resist wear for longer service intervals
• Coil construction includes noise suppression for smoother electrical performance
• Direct-fit design simplifies installation without modifications

Will these parts fit my vehicle and replace OE numbers?

This kit covers a broad range of 4-cylinder models including 2007–2016 Jeep Compass and Patriot (2.0L and 2.4L) plus various Dodge and Chrysler L4 applications—please verify fit with your year and engine code before ordering. The components correspond to OE references such as UF557 and 4503 and cross-reference numbers commonly used for replacement.

• Compatible with many 2.0L and 2.4L L4 vehicles from 2007–2016/2017
• Matches OE identifiers UF557 and 4503 and several cross-references
• Includes four coils and four plugs for a full-bank refresh
• Check vehicle specifics in photos or VIN fit guide prior to purchase

What are the construction and durability features?

The spark plugs use a double iridium tip for extended life and reliable spark formation over long mileage. The ignition coils are assembled with high-temperature thermoplastic connectors, stainless-steel springs, and ferrite noise suppression to protect electronics and transfer high voltage efficiently.

• Double iridium electrodes rated for long service life and stable performance
• Thermoplastic coil connectors resist heat-related cracking
• Internal ferrite suppressor minimizes radio-frequency interference
• Stainless-steel spring ensures consistent contact with the plug

How difficult is installation and what’s included?

These parts are designed for bolt-on installation and match the original form factor, so most experienced DIYers can replace the set in a single afternoon with basic hand tools. The package includes four ignition coil packs and four double iridium spark plugs; no printed manual is included, but online guides and dealership service notes can help.

• Includes: 4x ignition coil packs and 4x double iridium spark plugs
• OE-equivalent fit reduces need for special tools or adapters
• No printed instructions—consult online repair guides or a mechanic if unsure
• Customer support available for installation or product issues

Who is this for: This kit is aimed at owners and technicians servicing 2007–2017 Jeep Compass and other listed Dodge/Chrysler L4 vehicles who need a dependable, long-lasting ignition coil and spark plug upgrade. It’s suitable for drivers seeking improved starting, fewer misfires, and extended spark-plug life without custom modifications. If you want a complete four-cylinder ignition refresh with components that match common OE references, this X4XZ UF557 & 4503 kit is built for that purpose.