Standard Ignition DR-331 Distributor Rotor

Distributor Rotor for GM V8 Applications

Standard Ignition DR-331 is a distributor rotor for a wide range of GM trucks, vans, SUVs, and related platforms from 1995-2008. It is a Blue Streak Premium Quality replacement for ignition systems used in Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Express, and other listed applications.

Key Features

• Distributor rotor for ignition distributor and magneto service
• Blue Streak Premium Quality application coverage
• Direct fit for many Chevrolet, GMC, Cadillac, Oldsmobile, and Isuzu models
• Fits 1995-2008 vehicles listed in the fitment data
• Standard Ignition part number DR-331

Detailed Description

Use Standard Ignition DR-331 when servicing distributor-equipped GM vehicles that require a replacement rotor for proper spark transfer inside the distributor cap. This part is listed for Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Tahoe, GMC Yukon, Chevrolet Astro, GMC Safari, and other covered models, with fitment spanning 1995-2008 depending on the vehicle. This part cross-references AC Delco D328A and Wells CR331 for the same application.

Common Problems This Part Can Address

• Engine misfire caused by worn rotor contact surfaces
• Hard starting from weak or inconsistent spark routing
• Rough idle related to distributor ignition wear
• Loss of power under load from degraded ignition transfer
• Ignition service needs on high-mileage distributor systems

Installation Notes and Tips

Confirm distributor style and engine application before installation, especially on 1996 models with horizontal towers and on 2001 Silverado 2500 models with Mexico emissions. Inspect the distributor cap, terminals, and ignition wires at the same time to avoid repeat service. Verify the rotor seats correctly and aligns with the distributor shaft before reassembly.

Quality Assurance

Standard Ignition supplies this rotor as a Blue Streak Premium Quality replacement for the listed applications. Verify fitment by year, make, model, and distributor configuration before ordering.