Autolite Ar25 High Performance Racing Resistor Spark Plug, Pack Of 1 Drive Train and it is a Crimp

and it is a Crimp Coupling connector type

The unique design features oil baffles that help manage oil flow

Lens Color: Dark Red+White

Quick Installation: Simple replacement for existing carburetors

Autolite Ar25 High Performance Racing Resistor Spark Plug, Pack Of 1 Drive Train and it is a CrimpAutolite Racing Spark Plugs are used by many professional race car drivers. These spark plugs contain an Yttrium Enhanced Alloy, which enables up to 8 percent reduction in side wire temperature for improved durability and less pre ignition. Autolite racing plugs are available in colder heat ranges than most plug manufacturers to support modified engines and feature a cut background electrode for improved ignitibility and faster flame kernel growth.