Description
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.
Additional Details
- SKU:
- SP-581
- Width:
- 6.00 (in)
- Height:
- 6.00 (in)
- Depth:
- 6.00 (in)
