MPA Electrical 6343S Starter

Remanufactured Starter for GM Trucks and SUVs

MPA Electrical 6343S is a remanufactured 12-volt starter built for OE fit, form, and function. It is designed as a direct replacement for select Chevrolet and GMC trucks and SUVs from the mid-1980s, including Chevrolet Blazer, K5 Blazer, K10, K20, K30, K1500, K2500, K3500, and GMC Jimmy, K1500, K2500, and K3500 applications.

This starter uses a wound wire direct drive design with a Delco family layout, clockwise rotation, a pad mount, and 10-tooth engagement. The 3.6 power rating supports dependable cranking performance in vehicles that need a remanufactured OE-style starter replacement.

Key Features

• Remanufactured starter built to OE fit, form, and function standards
• 12.0-volt electrical design for select GM starting systems
• Wound wire direct drive construction
• Delco family starter configuration
• Clockwise (right) rotation
• 10-tooth drive engagement
• Pad mounting type for listed Chevrolet and GMC applications

Product Details

MPA Electrical’s Remanufactured line focuses on OE-style replacement parts rebuilt in TS16949 certified facilities. That process supports consistent dimensional accuracy and repeatable performance for drivers replacing a worn or failed starter. Part number 6343S cross-references 1113590 and 1989449 for the same application.

Compatible With 1984-1988 Chevrolet and GMC truck and SUV platforms, this starter is a direct-fit option for many classic GM 4x4 and full-size utility models. Search terms such as remanufactured starter for 1987 Chevrolet Blazer, 1985 GMC K1500 starter, or 1988 Chevrolet K2500 starter all point to this application family. The 6343S starter is also a relevant match for 1987-1988 Chevrolet V10, V20, V30, and GMC V1500/V2500/V3500 listings shown in the fitment data.

Common Problems This Starter Can Address

• Engine no-crank condition
• Slow or weak cranking
• Intermittent starter engagement
• Starter noise during engagement
• Failure caused by worn internal starter components

Installation Notes and Tips

Verify the vehicle’s starter mounting style, rotation, tooth count, and electrical requirements before installation. Confirm the existing unit matches a pad-mount, clockwise-rotation, 10-tooth Delco-style starter. For best results, inspect battery condition, cable connections, grounds, and the flywheel or flexplate ring gear before replacing the starter. This part fits 1987-1988 Chevrolet Blazer, 1985-1986 Chevrolet K10, and 1988 GMC K3500 applications listed in the fitment data.

Quality Assurance

MPA Electrical remanufactures this starter in TS16949 certified facilities, using OE-style standards intended to support long-term, trouble-free operation. The remanufactured 6343S is built for direct replacement use in listed Chevrolet and GMC applications.