This is a set of 6 Denso Iridium race spark plugs for the LF3/LF4 engine. These are 1 step colder than stock.
We offer our plugs to come pre-gapped for your builds needs if you so choose. Stock will be how the plugs come shipped from Denso at a gap of approximately .032".
The Stage 1 offering, gapped at .025", is for stock or mildly modified cars running pump gas 91 or 93 octane.
The Stage 2 offering, gapped at .020", is the go to gap that we run on all of our ZZP ATS-V's. Stage 2 is for full bolt on cars on E85, max effort stock or aftermarket turbos, or those cars that have previously had ignition related misfires under load.
Iridium Power® plugs are for drivers that care about performance as well as drivers that care about mileage. These plugs best demonstrate their performance improvement during acceleration. The world's smallest center electrode (0.4mm) and specially shaped ground electrode delivers maximum spark energy while withstanding temperatures greater than 4000º F. These features combine to achieve higher ignitability and require lower spark voltage than ever before. As a result, acceleration improves in comparison with normal plugs.
Features:
- Tapered cut, U-Groove ground electrode
- 0.4mm iridium center electrode
- 360-degree laser welding assembly process
Benefits:
- Required ignition voltage reduced
- Unsurpassed center electrode durability
Due to the fragile tip, a proper gapping tool must be used.
OEM torque spec is 15ft/lbs. Do not tighten spark plugs on a hot engine.
Heat range: 24 (same as NGK 8)
We highly recommend filling the ignition coil boots with dielectric grease during installation to prevent carbon tracking. ATS-V's and LF3/LF4's in general require frequent maintenance when it comes to the ignition system, we recommend changing plugs approximately every 10-15k.
Fits: 2016-2019 Cadillac ATS-V, 2014-2019 Cadillac CTS V-Sport, 2016-2019 Cadillac XTS V-Sport, and 2022+ Cadillac CT4-V Blackwing.
Sold in sets of 6.
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