The ThunderSpark Distributor Cap (part number 925-1083) is a direct-fit replacement for 1955-1980 American Motors, Buick, Cadillac, and Checker vehicles with 5.4L, 5.3L, and 4.7L engines. Walker Products Distributor Caps are OE Replacement components that restore accurate spark distribution and reliable ignition system performance.
Features:
- Exact OE Fit: Designed for 100% fit with original distributor housings—ensuring a secure seal and reliable contact points.
- OE Replacement Quality:Â Built to meet OE specs for terminal alignment, dielectric strength, and conductive path precision.
- Directs High-Voltage Spark:Â Routes ignition coil output to the correct cylinder to ensure proper firing order and engine performance.
- Restores Ignition Timing & Spark Delivery:Â Helps resolve misfires, hard starts, and poor performance caused by cracked or worn caps.
- Heat-Resistant Materials:Â Constructed with high-dielectric compounds to withstand high voltage, thermal cycling, and engine vibration.
Specifications:
Fits: 1955-1980 American Motors, Buick, Cadillac, Checker, and Chevrolet models including Ambassador, American, AMX, Classic, Gremlin, Hornet, Javelin, Marlin and more — 5.4L, 5.3L, and 4.7L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Interchanges With: Forecast 4209, AMC J3200192, Echlin RR165, General Motors 1932018, General Motors 1942654, General Motors 1949212, General Motors 1969204, General Motors 1971244 and 12 more
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
