Dorman 678-211 Starter Shim

Dorman Starter Shim for Proper Starter Alignment

Dorman 678-211 starter shims help space the starter motor for correct alignment during installation and service. Built from steel with high corrosion resistance, this universal-fit shim set supports consistent starter gear engagement on a wide range of Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile, and GMC truck applications.

This part cross-references OE numbers 1246249 and 14057993 for the same application.

Key Features

• Steel construction for durability in starter mounting applications
• Corrosion-resistant finish for long-lasting performance
• Three shim thicknesses: 0.0156 in, 0.047 in, and 0.0625 in
• Universal fit for broad vehicle coverage
• Irregular shape with one mounting hole for starter spacing
• Dorman 678-211 for starter alignment service and replacement work

Detailed Description

Dorman 678-211 is a starter shim kit used to fine-tune starter position so the starter drive and ring gear mesh correctly. The steel construction and corrosion-resistant finish make it a practical choice for vehicles that need precise starter spacing, including many Chevrolet Camaro, Corvette, C10, K10, S10, and GMC Safari, Sonoma, and Jimmy applications. When starter engagement is off, the result can be noise, hard starting, or premature wear; this shim set gives technicians the thickness options needed to correct alignment.

For service work on Chevrolet Express and GMC Savana vans, as well as classic GM truck and car platforms, Dorman 678-211 provides a straightforward way to adjust starter fitment without changing the starter itself. It is also a useful reference part for Chevrolet C/K series trucks, Pontiac Firebird, and other listed applications across the 1978-2008 model years.

What This Part Helps Solve

• Starter gear noise during cranking
• Poor ring gear engagement
• Starter misalignment after replacement
• Excessive wear on starter drive components
• Fitment correction on GM starter mounting setups

Installation Notes and Tips

• Verify starter alignment before final tightening.
• Select the shim thickness that produces proper gear clearance.
• Use the vehicle’s starter mounting surface and gear engagement as the reference point.
• Check for repeat noise or binding after installation and re-evaluate shim thickness if needed.
• Confirm application details for the specific Chevrolet, GMC, Buick, Cadillac, Pontiac, or Oldsmobile model listed in fitment.

Quality Assurance

Dorman manufactures these starter motor shims with corrosion resistance for dependable service life. Part number 678-211 is built to support accurate starter spacing on the listed GM applications and cross-references OE numbers 1246249 and 14057993.