Autolite 3910X High-Performance Spark Plug for Stock Motors
Replacement racing spark plug used by many professional race car drivers
Unique, special designed shell with 'X-gap' groove to run cooler and allow for improved flame kernel development
3/4in reach gasket seat with 14mm threads
Replacement racing spark plug used by many professional race car drivers
Unique, special designed shell with 'X-gap' groove to run cooler and allow for improved flame kernel development
3/4in reach gasket seat with 14mm threads
$2.70
Original: $7.72
-65%Autolite 3910X High-Performance Spark Plug for Stock Motors—
$7.72
$2.70Description
Replacement racing spark plug used by many professional race car drivers
Unique, special designed shell with 'X-gap' groove to run cooler and allow for improved flame kernel development
3/4in reach gasket seat with 14mm threads
