The ThunderSpark Distributor Cap (part number 925-1012) is a direct-fit replacement for 1986-1998 AM General, Buick, Cadillac, and Chevrolet vehicles with 5.7L, 5.0L, and 6.0L engines. Walker Products Distributor Caps are OE Replacement components that restore accurate spark distribution and reliable ignition system performance.
Features:
- OE Replacement Quality:Â Built to meet OE specs for terminal alignment, dielectric strength, and conductive path precision.
- Exact OE Fit: Designed for 100% fit with original distributor housings—ensuring a secure seal and reliable contact points.
- Heat-Resistant Materials:Â Constructed with high-dielectric compounds to withstand high voltage, thermal cycling, and engine vibration.
- 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.
Specifications:
Fits: 1986-1998 AM General, Buick, Cadillac, Chevrolet, and GMC models including Hummer, Roadmaster, Brougham, Fleetwood, B7, Blazer, C1500, C2500 and more — 5.7L, 5.0L, and 6.0L 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 4210, Carquest 51-1595, AP Exhaust D-354, Echlin RR-249, Delphi DC1016, Filko DR-212, General Motors 808483, General Motors 3854548 and 29 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.
