Keep high-voltage spark headed to the right cylinder with the ThunderSpark Distributor Cap 925-1010, an OE-replacement cap for conventional distributor-based ignition systems. It fits many vehicles, among them the 1985-1986 Chevrolet Camaro, 1991-1993 Chevrolet LLV and 1991-1993 Chevrolet S10, along with a wide range of Buick, Cadillac, Chevrolet, GMC, Oldsmobile and Pontiac models. See the Buyer's Guide tab for the full list and engine details.
The distributor cap carries high-voltage current from the ignition coil to the correct spark plug by way of the rotor and its internal terminals. Over time, a cap can develop carbon tracking, cracks or corrosion, which may lead to misfires, hard starting and drivability complaints. If a worn cap is the cause, this unit is designed to help restore proper spark distribution.
It is designed to install in the original distributor housing and keep a secure connection with the rotor and ignition wires, which makes it a sensible addition to a tune-up or an ignition system repair.
What does a distributor cap do?
It routes high-voltage current from the ignition coil to the correct spark plug through the rotor and internal terminals, so each cylinder fires in the proper order.
What are signs a distributor cap may need replacing?
Carbon tracking, cracks or corrosion on the cap can lead to misfires, hard starting and drivability issues. Diagnose the ignition system before replacing parts.
Is this the right 1991-1993 Chevy S10 distributor cap?
ThunderSpark 925-1010 is listed for the 1991-1993 Chevrolet S10 and the 1991-1993 Chevrolet LLV. Check the Buyer's Guide tab for your exact vehicle.
What is this distributor cap made from?
It is constructed with high-dielectric compounds designed to withstand high voltage, thermal cycling and engine vibration.
How is this distributor cap installed?
It is designed to fit the original distributor housing. Move the ignition wires from the old cap one at a time to keep the firing order correct, and follow the vehicle's service information.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
