X4XZ UF270 Ignition Coil & 4503 Double Iridium Spark Plug Kit — 8-Pack for 4.7L V8 Dodge Ram, Durable OE-Style Fit

The X4XZ UF270 ignition coil and 4503 double iridium spark plug kit replaces worn coils and plugs to restore reliable ignition, improved start behavior, and consistent combustion in compatible 4.7L V8 Dodge Rams and related vehicles.

This complete set includes eight UF270 ignition coil packs and eight 4503 double iridium spark plugs engineered to match or improve on original equipment fit and function for a range of 4.7L V8 Chrysler, Dodge, Jeep and Mitsubishi applications from the 1999–2008 era. Each component is built for long service life: the plugs use iridium electrodes for extended durability while the coils use a robust thermoplastic connector, stainless-steel spring, and internal ferrite suppressor for dependable high-voltage delivery and reduced radio interference.

Which vehicles will this coil and spark plug kit fit?

This kit is designed primarily for 4.7L V8 engines across multiple models and years. Before ordering, verify your vehicle’s engine code and year against the compatibility list to ensure correct fitment.

• 2000–2007 Dodge Dakota V8 4.7L and select 2007–2008 3.7L Dakota models
• 2000–2007 Dodge Durango V8 4.7L; 2002–2007 Dodge Ram 1500 V8 4.7L
• 2004, 2007–2008 Dodge Ram 1500 3.7L; 1999–2007 Jeep Grand Cherokee 4.7L
• 2006–2007 Jeep Commander (XK) 4.7L; 2007 Chrysler Aspen 4.7L; 2006–2007 Mitsubishi Raider 4.7L

How do these parts affect engine performance and reliability?

Worn ignition coils and plugs can cause misfires, rough idle, reduced power, and worse fuel economy. Replacing them with matched coils and double iridium plugs restores consistent spark energy, which helps smoother running and more reliable cold starts without claiming specific numerical gains.

• Double iridium plugs provide a finer, longer-lasting electrode for steady spark delivery.
• Coils include an internal ferrite noise suppressor to limit radio frequency interference.
• Thermoplastic connectors and stainless-steel springs are chosen to resist heat-related failure.

What makes these UF270 coils and 4503 plugs different from the originals?

The kit either matches or improves on OE design details to simplify installation and longevity. Materials and construction focus on durability and consistent electrical transfer, while direct-fit OE numbers make replacement straightforward for technicians and DIYers.

• OE reference numbers include UF270 & 4503 with many replaceable part cross-references provided.
• Plugs rated for long life with iridium tips—service life up to roughly 100,000 km under normal conditions.
• Coils built with robust connectors and noise suppression similar to or better than original units.

What comes in the package and what support is available?

The kit ships with everything needed to replace coils and plugs for an eight-cylinder engine, but does not include an instruction manual. X4XZ provides customer support for installation questions and a one-year product service warranty for defects under normal use.

• Includes: 8 ignition coil packs (UF270) and 8 double iridium spark plugs (4503).
• Cross-replaces many OE numbers such as SKIC038, UF297, 56028138 series, and others.
• 24-hour customer service and one-year product service coverage from X4XZ.

Who is this for: technicians and owners of compatible Dodge, Jeep, Chrysler, and Mitsubishi vehicles with the 4.7L V8 who need a full ignition service kit. It’s especially useful for those experiencing misfires, rough idle, or declining fuel economy who prefer a complete, matched-set replacement rather than swapping single components. Confirm fitment against your vehicle’s year and engine code before purchase.

FAQ

Q: Does this kit fit a 2004 Dodge Ram 1500 with a 4.7L engine?

A: Yes. The kit lists compatibility with 2002–2007 Dodge Ram 1500 V8 4.7L engines—verify your engine code before ordering.

Q: How many coils and plugs are included?

A: The package contains eight UF270 ignition coil packs and eight 4503 double iridium spark plugs for a full V8 replacement.