Keep every cylinder firing on time with the ThunderSpark Distributor Cap 925-1083 (also cataloged as 9251083), an OE-replacement cap for conventional distributor-based ignition systems. It drops in as a direct-fit replacement across a broad classic and late-model list, including the 1973-1974 Buick Apollo, 1959-1974 Buick Electra, 1957-1974 Chevrolet Bel Air, 1967-1973 Chevrolet Camaro, and 1974-1975 International 200 — see the Buyer’s Guide tab for the full list of 339 applications.
The distributor cap routes high-voltage current from the ignition coil, through the rotor and internal terminals, to the correct spark plug in the firing order. Over time, caps can develop carbon tracking, cracks, or corrosion — signs one may need replacing include misfires, hard starting, and general drivability issues.
- OE-replacement quality: built to meet OE specs for terminal layout, dielectric strength, and conductive path.
- Directs high-voltage spark: sends ignition coil output to the correct cylinder to help maintain the proper firing order.
- Heat-resistant materials: high-dielectric compounds designed to withstand high voltage, thermal cycling, and engine vibration.
- Designed for an exact OE fit: installs into the original distributor housing and maintains a secure connection with the rotor and ignition wires.
If a cracked or worn cap is the cause of your misfire or hard start, replacing it helps restore accurate spark distribution. Interchange: D308 · J3200192 · 5D1030 · C158 · 2N7024 · RR165 · 4209 · 12338667 · 19106458 · 1932018 · 1942654 · 1949212 · 1969204 · 1971244 · DR429 · DR429T · DR976G · DR976
