Taylor High Energy Spiral Core 8 mm Spark Plug Wire Set - Blue - 90 Degree Plug Boots - HEI Style Terminal - Small Block Chevy 10289 The 517 seals have a

The 517 seals have a

prevents unwanted changes

1972-1972 Chevrolet Biscayne

Winters Internal 10-10 Coupler

Taylor High Energy Spiral Core 8 mm Spark Plug Wire Set - Blue - 90 Degree Plug Boots - HEI Style Terminal - Small Block Chevy 10289 The 517 seals have aTaylor's 8mm Hi Energy Series is a High Temperature and Oil Resistant Ignition Wire available with two popular conductors: Resistor Core and Wire Core High Temperature Blue 100% Silicone Boot Ends with double spring locking spark plug terminals Universal Sets available in both Resistor or Wire Core in 90, 135, or 180 spark plug boot ends. Wire Core for applications where RFI (Radio Frequency Interference) is not a concern. Resistor Core a great choice