Skip to product information
1 of 1


Spark Plug - 1948-1974 Big Twin

Spark Plug - 1948-1974 Big Twin

Regular price $3.95 USD
Regular price Sale price $3.95 USD
Sale Sold out
Shipping calculated at checkout.

Champion - Copper Plus - Spark Plug fit for 1948-1974 Big Twin

  • Copper Plus spark plug has a copper core center electrode that allows for accurate control of heat range, optimizing performance and longevity of the spark plug
  • Patented SAC-9 semi-conductor resistor for maximum EMI and RFI suppression
  • Patented Ultraseal™ coated shell for rust prevention

Thread Reach: 3/8" / 9.5 MM

Hex Size: 20.6 MM / 13/16"

Heat Range: 12

Gap: .25"

View full details

Collapsible content


Easy hassle free 60 day return policy!


Free shipping on orders over $79.00 to the continental USA