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Storefront >> Engine Components >> AutoLite Double Platinum Core Spark Plugs


AutoLite Double Platinum Core Spark Plugs Price: $36.99
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APPLICATIONS:
- 1997-2003 Grand Prix GTP
- 2004-current Grand Prix GTP
- 2004-current Grand Prix GTP Comp G
- 1997-2004 Regal GS
- 1996-2003 Bonneville SSEi
- 2004-current Monte Carlo Supercharged SS
- 2004-current Impala SS

We now offer the brand-new AutoLite Double Platinum Spark Plugs, designed specifically for today's distributorless ignition system (DIS). This system causes half of the spark plugs in the engine to fire in an unconventional way. Instead of the standard direction of the electricity moving from the center electrode to side electrode, a DIS system moves the electricity on half of the plugs from the side electrode to the middle electrode. But because the AutoLite Double Platinum Spark Plugs have both of these electrodes made from platinum, they can withstand this with no wear to either electrode.

AutoLite Double Platinum Spark Plugs have the following features/attributes:
  • Platinum to platinum firing
  • Able to run a slightly larger gap than a copper spark plug
  • 30% more durable versus average of leading competitors
  • Maintains optimal performance longer
  • Virtually no gap erosion
  • Nickel-plated threads and shell
  • Top fuel efficiency over the life of the plug

A general guideline for which spark plug heat range is right for your modified supercharged vehicle, are as followed:

- Use AutoLite APP104's (two heat ranges colder) if your car is similarily modded like this: has a 3.0 - 3.25” supercharger pulley, 1.80:1 or 1.90:1 rocker arms or very mild cam, CAI setup, lower-temp thermostat, exhaust headers, cat-back exhaust system, and reprogrammed PCM.

- Use AutoLite APP103's (three heat ranges colder) if your car is similarily modded like this: has a 3.0” or smaller supercharger pulley, 1.90:1 rocker arms or aggressive cam, CAI setup, lower-temp thermostat, exhaust headers, cat-back exhaust system, port and polished supercharger housing and/or throttle body, and reprogrammed PCM.

It is recommended that you set the gap on these to .057”-.060”.

Spark Plugs are sold in a set of 6. Order a quantity of 1 to receive a full set.

Select Spark Plugs
APP104's (two heat ranges colder)
APP103's (three heat ranges colder)


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