ThunderSpark Distributor Cap P/N:925-1004
Route high-voltage current to the correct cylinder in the proper firing order with the ThunderSpark Distributor Cap 925-1076, an OE-replacement cap for vehicles running conventional distributor-based ignition systems. It fits a huge range of classic and late-model applications including the 1957 Lincoln Mark II, 1968-1971 Lincoln Mark III, 1957-1974 Mercury Colony Park, 1964-1973 Mercury Mustang, 1978-1979 American Motors AMX, and Ford, Dodge and Edsel models — see the Buyer's Guide tab for the full list and the engine details for your vehicle.
Over time distributor caps can develop carbon tracking, cracks, or corrosion that lead to misfires, hard starting, and drivability problems. If a worn or damaged cap is the cause, this part replaces it and helps restore consistent spark delivery.
Interchange: DH-146 · 33-7020
DH146 · 337020 · 5D1023 · C154 · C183 · 1818724 · B7A12106A · B7AZ12106A · D7TZ12106A · FEK12106A · 4204 · 4205 · 19106467 · FD129 · FD129T · FD149 · F934
This part cross-references / interchanges with the following part numbers:
What does the distributor cap do?
It directs high-voltage current from the ignition coil to the correct spark plug through the rotor and internal terminals, maintaining the engine's proper firing order.
What are signs my distributor cap may need replacing?
Carbon tracking, cracks, or corrosion on the cap can cause misfires, hard starting, and drivability issues. Diagnose the cause before replacing to confirm the cap is the problem.
Will this cap fit my vehicle?
It fits many classic and late-model Ford, Lincoln, Mercury, Dodge, Edsel, and American Motors applications. Check the Buyer's Guide tab and your engine details to confirm fit.
Is this an OE-replacement part?
Yes. It is built to meet OE specifications for terminal layout, dielectric strength, and conductive-path precision, and installs into the original distributor housing.
What numbers does this cap interchange with?
It cross-references DH-146, 33-7020, 5D1023, C154, C183, 1818724, B7A12106A, B7AZ12106A, D7TZ12106A, FEK12106A, 4204, 4205, 19106467, FD129, FD129T, FD149, and F934.
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.