This Ultra Opti-Spark II performance replacement distributor form Accel is designed for GM LT1/LT4 type engines with Opti-Spark II. It features a new polished aluminum housing with heavy-duty Oil lite bushings, and high dielectric strength glass reinforced cap. Other features included: epoxy over mold and brass contacts with balanced rotor, a cross flow vent design, and new pin drive shaft seals and installation hardware.
Electrical components such as distributors are non-returnable parts.
Always refer to a factory service manual when diagnosing engine service problems. You can damage electrical components if the proper procedures are not followed. Be sure you are replacing the correct part.