Keep high-voltage spark flowing to the right cylinder with the ThunderSpark Distributor Rotor 926-1014. It transfers current from the ignition coil to the correct terminal on the distributor cap for accurate spark timing on each engine cylinder. This rotor drops in as a direct-fit replacement across a wide range of GM trucks, vans, and SUVs — including the 1999-2000 Cadillac Escalade, 1996-2005 Chevrolet Astro, 1995-2005 Chevrolet Blazer, 1996-2004 Chevrolet S10, 1999-2007 Chevrolet Silverado 1500, 1996-2000 Chevrolet Tahoe, 1995-2005 GMC Jimmy, 1997-2000 Isuzu Hombre, and 1992-2002 Isuzu NPR. With 89 applications in total, see the "Vehicles it fits" section for the full list and your engine.
- Accurate spark distribution: Routes coil high-voltage to the correct cap terminal for proper alignment and timing.
- High-dielectric-strength materials: Designed to resist arcing and heat degradation under demanding operating conditions.
- Corrosion-resistant contact surface: Helps maintain conductivity and consistent output over time.
- OE fit, form, and function: Engineered to match OE standards for reliable ignition timing.
Worn or corroded rotors are among the signs this part may need replacing when you're chasing hard starting, misfires, or engine hesitation — diagnose the cause first, and if the rotor is at fault, this replaces it.
Interchange: 173-8021 · D-236 · 51-5584 · DR-257 · RD-33 · DR-58-K · DR-820
1738021 · D236 · 515584 · DR257 · RD33 · DR58K · DR820 · 4A6 · 4R1066 · 898253013 · 3961 · 10452457 · 10489702 · 8104524570 · 8104897020 · DR331 · DR331T · 38589776 · DR975
This part cross-references / interchanges with the following part numbers:
4A6, 4R1066, D236, 173-8021, D-236, 51-5584, DR-257, 898253013, 3961, 10452457, 10489702, 8104524570, 8104897020, RD-33, DR-58-K, DR331, DR331T, DR-820, 38589776, DR975
Frequently Asked Questions
What does the distributor rotor do?
It transfers high-voltage current from the ignition coil to the correct terminal on the distributor cap, delivering the spark to each engine cylinder in the proper firing order.
What are signs this rotor may need replacing?
Hard starting, misfires, or engine hesitation can be signs of a worn or corroded rotor. Diagnose the cause first, since these symptoms can have other sources.
Will this fit my vehicle?
It fits 89 year/make/model applications, including many GM trucks, vans, and SUVs. Check the "Vehicles it fits" section to confirm the fit and engine for your vehicle.
What is the manufacturer part number?
The ThunderSpark distributor rotor is MPN 926-1014, also written 9261014.
What materials is this rotor made from?
It uses high-dielectric-strength materials designed to resist arcing and heat degradation, plus a corrosion-resistant contact surface for consistent conductivity.
