The ThunderSpark Distributor Cap (part number 925-1011) is a direct-fit replacement for 1985-1996 Buick, Cadillac, Chevrolet, and GMC vehicles with 2.8L, 4.3L, and 3.1L 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: 1985-1996 Buick, Cadillac, Chevrolet, GMC, and Oldsmobile models including Skylark, Cimarron, Astro, C1500, C2500, Camaro, Caprice, Cavalier and more — 2.8L, 4.3L, and 3.1L 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 4220, Carquest 51-1591, AP Exhaust D-345, Echlin RR-241, Delphi DC1015, Filko DR-204, General Motors 185362, General Motors 1988001 and 22 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.
