TRQ Iridium Spark Plugs Tune Up Ignition Kit 12 Piece Set - V12 Fit

In this review the TRQ Iridium Spark Plugs 12 piece ignition kit is judged on fit, longevity and value for owners of late 20th century Jaguar V12 cars. It is aimed at DIY mechanics and professional shops that need a direct fit, vehicle specific tune-up kit for 1982-1996 Jaguar XJS and XJ12 models. The single biggest reason to buy is the combination of an iridium tip rated for longer life and exact OE replacement fitment that removes fit guesswork for these older V12 engines.

Key Features

• Direct Fit: Each plug is made to match OE specifications so installation is straightforward on compatible Jaguar V12 engines.
• Iridium Tip: The iridium tip is designed to provide longer service life than platinum alternatives, helping maintain ignition performance for many miles.
• Complete Kit: The set includes 12 spark plugs so a full V12 tune-up is possible without buying individual parts.
• Interference Suppression: Built-in resistor design reduces electromagnetic interference that can affect radio or sensitive electronics.
• Heat Range Tested: Manufactured to specific heat range standards to support reliable combustion and stable idle under normal driving.

Who It's For

This kit is best for owners and mechanics working on 1982-1996 Jaguar V12 cars (including XJS and XJ12 models) who want a straightforward, OE-replacement style tune-up. It suits anyone who prefers replacing all plugs at once with a matched set designed to the vehicle reference numbers provided in the listing.

It is less suitable for drivers of non-V12 Jaguars or other makes, and for those who require specialty racing or custom electrode designs outside the specified heat ranges. If you need a different plug gap, type or non-iridium material, choose a product made for those specific needs.

Pros & Cons

Pros

• Good quality and reliable fit for the listed Jaguar V12 engines, making installation simple for DIYers and shops.
• Iridium tip offers extended life and can help sustain fuel efficiency over time.
• Complete 12-piece kit provides value by covering a full V12 tune-up in one purchase.
• Resistor built in to reduce electromagnetic interference and support stable electronics operation.

Cons

• Some owners report mixed performance results on initial fitment, so proper gap checking and installation technique remain important.
• Compatible only with the specified Jaguar models, so buyers must verify fitment before ordering.

Specifications

Our Verdict

The TRQ Iridium 12-piece kit is a practical, cost-effective choice for Jaguar V12 owners who want an OE-style replacement set that supports longer service life and consistent fit. It offers clear value as a single-purchase tune-up option, though careful installation and fitment verification are advised to ensure optimum performance.

Frequently Asked Questions

Will these plugs fit my V12 Jaguar?
They are intended for the listed 1982-1996 XJS and XJ12 V12 models; always check the vehicle specific fitment information in the product listing before purchase.

How long will the iridium tips last?
TRQ states iridium tips provide longer life than platinum and are designed to deliver extended service life under normal driving conditions.

Do I need to gap these plugs before installation?
Plugs are manufactured to OE specs but it is good practice to verify and adjust the gap during installation for best ignition performance.