Colder spark plugs work by pulling more heat out of the engine’s cylinders (making them “colder”) and dissipating it into the engine’s head, which is then cooled by the cooling system. Depending on how you have your engine built, these could be a great addition. Colder plugs can help prevent engine knock and prevent the tip of the spark plug from melting or misfiring.
R53 1 Step Colder Plugs
$59.99
Adding spark plugs that are a step colder with no real change to the engine, can actually hurt more than help by leading to spark plugs fouling quicker than normal and by making the car harder to start in cold weather conditions.
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| Make | Model | Year |
|---|---|---|
| MINI | COOPER JCW | 2002 - 2006 |
| MINI | COOPER S | 2002 - 2006 |
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