JDM Engineering recommends OEM Ford Motorcraft SP-581 Spark plugs when running mild to moderate bolt on modifications. Recommended to gap .035" for stock or .030" for extra boost with a smaller pulley.
2020 GT500 Spark plugs Motorcraft SP-581
$88.00
- SKU:
- SP-581
- Weight:
- 5.00 LBS
- Shipping:
- Calculated at Checkout
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