TRQ Iridium Spark Plugs Engine Tune Up Ignition Kit 12 Piece Set

In this review the TRQ Iridium Spark Plugs 12 piece kit is presented as a direct-fit, OE replacement option for owners of several late 1990s and 2000s V6 and V12 vehicles. The bottom line: this kit is for owners who need a full tune-up set that matches original equipment reference numbers and is straightforward to install; its single biggest selling point is the complete 12-plug package that covers engines which require a full bank change at once. The reviewer found the parts feel well made and that installation is simple when fitment is confirmed.

Key Features

• Direct Fit: Offers direct fitment for specified Mercedes, Chrysler and select Aston Martin and BMW engines so no rethreading or adaptors are required when the correct model is chosen.
• OE Reference Match: Built to match multiple OE reference numbers, which helps ensure compatibility with vehicles that list those factory part numbers.
• Complete Kit: Includes 12 spark plugs, providing everything needed for a full tune up on engines requiring a dozen plugs, so buyers do not need to purchase individual units separately.
• Aftermarket Cross-References: Supplied with extensive aftermarket reference numbers, making it easier to confirm interchangeability with a range of service catalogs.
• Ease of Installation: Customers consistently report the plugs install cleanly and seat correctly, reducing install time during a routine tune up.

Who It's For

This kit is best for DIY mechanics or professional technicians working on compatible Mercedes Benz V6 and V12 engines, Chrysler Crossfire V6, Aston Martin DB9 V12, and certain BMW V12 models listed in the fitment. It suits owners who prefer to replace all plugs at once and want parts that refer to factory numbers to reduce fitment mistakes.

Users who should look elsewhere include owners who do not have one of the listed compatible models or drivers needing a single replacement plug rather than a full 12-piece set. Also consider OEM-branded plugs if you require manufacturer warranty coverage tied to original dealer parts.

Pros & Cons

Pros

• Good perceived build quality and a solid fit reported by multiple customers.
• Complete 12-piece kit is convenient for full engine tune ups and reduces ordering errors.
• Many OE and aftermarket reference numbers included, easing part lookup and compatibility checks.
• Customers report improved fuel efficiency and straightforward installation in compatible vehicles.

Cons

• Performance feedback is mixed for acceleration; some users report less-than-expected improvement compared with OEM plugs.
• Compatibility must be checked carefully against fitment information to avoid ordering the wrong set.

Specifications

Brand	TRQ
Quantity	12 spark plugs per kit
Fitment Highlights	Selected Mercedes Benz, Chrysler Crossfire, Aston Martin DB9, BMW 750iL (see listing)
OE Reference Numbers	Includes 101905611G, 9091901219, 2741023700 and others listed
Aftermarket References	Cross-referenced with many codes such as AGSP32F, BCP5EIX and JE2618110
Replacement Type	Direct fit OE replacement spark plug set

Our Verdict

The TRQ 12-piece iridium spark plug kit is a strong value for owners who need a full set and who confirm fitment for the listed Mercedes, Chrysler, BMW or Aston Martin engines. It combines direct-fit convenience with broad OE and aftermarket cross-references, making it a practical tune-up choice; those seeking guaranteed OEM performance may still prefer factory parts.

Frequently Asked Questions

Will these plugs fit my vehicle?
Check the listing fitment details and the OE reference numbers against your vehicle before ordering to ensure compatibility.

Are these plugs easy to install?
Yes; most customers report straightforward installation when the correct fitment is selected.

Do they improve fuel economy?
Several buyers noticed modest fuel efficiency gains, though performance results vary by vehicle and condition.