The ThunderSpark Distributor Cap (part number 925-1013) is a direct-fit replacement for 1991-2000 Cadillac, Chevrolet, and GMC vehicles with 5.7L, 5.0L, and 7.4L engines. Walker Products Distributor Caps are OE Replacement components that restore accurate spark distribution and reliable ignition system performance.
Features:
- 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.
- 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.
Specifications:
Fits: 1991-2000 Cadillac, Chevrolet, and GMC models including Escalade, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, G30, K1500 and more — 5.7L, 5.0L, and 7.4L 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 40005, Ford 898253T22, Carquest 51-1614, Delphi DC20010, Filko DR-277, General Motors 10452459, General Motors 10477599, General Motors 10493663 and 19 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.
