BDFHYK Ignition Coil & Iridium Spark Plug Kit UF557 & BY481ZFR5F for Jeep Patriot 2007–2017 — Direct-Fit Durable Replacement

BDFHYK's ignition coil UF557 paired with spark plug BY481ZFR5F is a direct-fit replacement kit engineered to restore reliable ignition for compatible Jeep, Dodge, and Chrysler models.

This set combines a high-quality coil pack and iridium spark plug designed for model years commonly used in Patriot, Compass, Journey, Caliber, Avenger, and select Chrysler vehicles. The coil uses premium steel, imported rubber, and varnished wire for heat resistance and durability, while the spark plug features an iridium electrode and advanced ceramic for consistent sparks and longer service life. Always verify OE numbers and vehicle fitment before ordering.

Which vehicles and engine codes does this kit fit?

This kit suits a range of compact SUVs, crossovers, and sedans produced between 2007 and 2019. Compatibility covers Jeep Patriot and Compass (2007–2017), Dodge Journey (2009–2019), Dodge Caliber (2007–2012), Dodge Avenger (2008–2014), and several Chrysler 200/Sebring/Cirrus years. Check OE cross-references and part numbers to confirm fitment for your engine variant.

• Primary fit: Jeep Patriot & Compass 2007–2017
• Also fits: Dodge Journey 2009–2019; Caliber 2007–2012; Avenger 2008–2014
• Chrysler coverage: 200 (2011–2014), Sebring (2007–2010), Cirrus (2008–2010)
• Verify OE numbers: UF557, UF-557, 5GN10346 and BY481ZFR5F before purchase

How are these components built to last under daily driving?

The ignition coil is constructed with silicon steel cores, Japan-imported rubber seals, and Germany-sourced varnished wire to withstand temperature cycles and electrical stress. The spark plug uses an iridium tip and high-grade ceramic insulator to resist wear and retain optimal spark gap over longer intervals. Together they reduce misfires and prolong service intervals compared with lower-grade replacements.

• Coil internals: silicon steel for magnetic stability
• Seals and insulation: imported rubber and varnished wire
• Spark plug tip: iridium electrode for durability
• Materials chosen for heat and corrosion resistance

What performance differences should I expect after installation?

Replacing worn coils and plugs typically restores smoother starting, steadier idle, and more responsive throttle response when ignition parts were the limiting factor. Improved combustion consistency can also reduce rough running and help maintain fuel economy compared with failing ignition parts. Results depend on engine condition and correct installation.

• Faster, more reliable engine starts
• Smoother idling and fewer misfires
• Improved throttle responsiveness
• Potential stabilization of fuel usage if misfires were present

How do I confirm I need this coil and spark plug set?

Typical signs that ignition components need replacement include persistent engine shaking, difficulty starting, hesitation under acceleration, and rising fuel use after long service life. Many owners consider replacement after roughly 80,000 km, but symptoms and OE history should guide the decision. Always cross-check the vehicle’s OEM part numbers to ensure proper match.

• Symptoms: shaking, start failures, sluggish acceleration
• Service guideline: consider after ~80,000 km or when symptoms appear
• Check OE: UF557/UF-557 and BY481ZFR5F before ordering
• Professional inspection recommended for diagnostics

Who is this for: Drivers and DIY mechanics who own compatible Jeep, Dodge, or Chrysler models and want a cost-effective ignition repair with improved reliability. This kit is aimed at owners replacing worn ignition coils and spark plugs to restore engine smoothness and dependability, plus small shops sourcing direct-replacement parts from a dedicated manufacturer. If you’re unsure about fitment, confirm OE numbers or consult a technician before purchase.