Ignition Coil Pack UF270 and Iridium Spark Plug 4503 Set of 8 - 4.7L

In this review the reviewer evaluates the UF270 ignition coil pack paired with the Iridium spark plug 4503 sold as a set of 8, targeted at owners of 4.7L V8 Dodge, Ram, Jeep and compatible vehicles from 2000 to 2007. The bottom line: this kit is for drivers who need a full ignition refresh to restore engine responsiveness and reduce misfires, offering a practical balance of durable coil construction and high-tech iridium plugs. It is recommended when OE checks confirm compatibility and when older ignition components show symptoms like rough idle, slow acceleration, or increased fuel use.

Key Features

• Compatibility: Designed for 4.7L V8 Dodge Dakota, Ram 1500, Durango, Jeep Grand Cherokee and other supported models from 2000-2007, helping buyers replace a full bank at once.
• Coil construction: Coils use silicon steel, Japan-imported rubber and varnished wire for improved durability and longer life compared with generic coils.
• Spark plug design: Iridium electrode and specialized ceramic deliver quicker starts and consistent spark delivery that can restore acceleration response.
• Complete set: Supplied as a set of 8 coil packs and 8 spark plugs so the entire V8 ignition system is refreshed in one service session.
• OE cross-check guidance: The listing includes many OE cross references so technicians can confirm fit before purchase, reducing fitment surprises.
• Manufacturer support: From a supplier with a factory and development experience over a decade, with a stated willingness to respond to customer questions.

Who It's For

This kit is well suited to owners of vehicles that use the 4.7L V8 who want to replace an entire bank of coils and spark plugs at once, particularly when the engine shows signs of misfire, reduced responsiveness or higher fuel consumption after long use. DIY mechanics and independent shops will appreciate receiving a full set that matches common OE cross references.

It is not the right choice for drivers who do not have one of the supported model years or for anyone who wants to replace a single cylinder component only. Also buyers should perform an OE part number check before ordering to ensure exact fit for their vehicle.

Pros & Cons

Pros

• Durable coil materials and construction promise longer service life than low-end coils.
• Iridium spark plug electrodes improve starting and throttle response when matched to worn systems.
• The set of 8 simplifies a full ignition system service and ensures matched parts across cylinders.
• Good value for a complete replacement compared with buying coils and plugs separately.

Cons

• Some customers reported mixed quality with a few defective spark plugs received, so inspection on arrival is advised.
• Fitment requires careful OE number checking; incorrect orders can occur if model compatibility is assumed rather than verified.

Specifications

Our Verdict

For owners of supported 4.7L V8 vehicles who need a full ignition refresh, this UF270 coil and 4503 iridium plug set is a practical value: it pairs robust coil construction with iridium plugs to restore responsiveness and reduce misfires. Buyers should verify OE numbers before ordering and inspect plugs on arrival, but when matched correctly this kit delivers good service life and tangible performance improvement.

Frequently Asked Questions

Will this set fit my 2004 Ram 1500 with the 4.7L V8?
It should if your truck uses the 4.7L V8; check the OE part numbers and the pictures or detail page to confirm exact fit before purchasing.

Should all coils and plugs be changed at once?
Replacing the full set of 8 restores uniform performance across cylinders and is recommended when components are original or showing signs of wear.

What if a spark plug arrives defective?
Inspect parts on arrival; the manufacturer has noted customer support and defective plugs have been reported occasionally, so contact the seller promptly for replacement.