3X UF640 Ignition Coils & Spark Plug Pack & Wire For Dodge Durango Jeep Liberty

Ignition Coils & Spark Plug Pack for Dodge Durango & Jeep Liberty

Complete ignition tune-up set that replaces three UF640 coil packs along with matching spark plugs and spark plug wires to restore spark delivery and acceleration on 3.7L and 4.7L V8 engines found in select Dodge and Jeep models.

Overview

This UF640 ignition coil and spark plug set delivers a complete ignition system refresh by combining three direct-fit coil packs with fresh spark plugs and high-resistance plug wires in one convenient package. It is tailored for owners of Dodge Durango and Jeep Liberty vehicles who want to eliminate misfires, hard starts, and sluggish throttle response caused by worn ignition components. Each UF640 coil assembly is engineered to replicate the electrical behavior of the factory unit so the engine management system sees consistent spark timing and dwell across all fired cylinders.

Built For Performance

• Three UF640 epoxy-filled ignition coils resist internal shorting and voltage leaks even under high-underhood heat
• Pre-gapped spark plugs require no adjustment out of the box and feature a nickel-alloy center electrode for consistent spark kernel formation
• Silicone-jacketed spark plug wires suppress radio frequency interference to protect onboard sensors and communication equipment
• Snap-lock coil connectors and factory-routed wire lengths allow a straightforward remove-and-replace installation using basic hand tools
• High secondary winding output supports stable idle and clean wide-open-throttle combustion under load
• Components are assembled on automated production lines with end-of-line continuity and high-potential testing to reduce early-life failures

Fits These Machines

• for Dodge Durango 2000-2003 4.7L V8
• for Dodge Durango 2004-2007 3.7L V6
• for Dodge Durango 2004-2007 4.7L V8
• for Jeep Liberty 2002-2007 3.7L V6
• for Jeep Grand Cherokee 1999-2004 4.7L V8

On-The-Job Use

• Resolving intermittent misfire codes on high-mileage daily drivers before they degrade catalytic converter health
• Completing a preventive ignition system overhaul alongside a spark plug replacement at the recommended service interval
• Diagnosing cylinder-specific misfires by replacing all three coil packs and wires in one sweep
• Restoring hot-soak restart reliability on SUVs that hesitate or stumble after short heat-soak stops
• Fleet maintenance on delivery or service vehicles built on the Dodge and Jeep platform to reduce repeat shop visits

Specs At A Glance

Good To Know

Q: Do I need to replace all three UF640 coils at once on a V6 engine? A: Ignition coils tend to degrade at a similar rate across the bank, and swapping all three together helps prevent a new misfire from appearing shortly after a partial replacement.

Q: Why does the set include spark plug wires instead of just the coils and plugs? A: Aged plug wires can mask the improvement gained from fresh coils, so including them guarantees the full secondary ignition path is renewed in a single service event.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.