ATP Parts CB-30 Automatic Transmission Bushing

ATP CB-30 Automatic Transmission Bushing

ATP Parts CB-30 is an exact-fit automatic transmission bushing for front pump body and front body applications. Built to match the original dimensions, it supports proper transmission alignment in a wide range of Chevrolet, GMC, Cadillac, Buick, Pontiac, Oldsmobile, and Isuzu vehicles.

Key Features

• Part number: CB-30
• Outside diameter: 1.8215 in.
• Length: 0.5625 in.
• Automatic transmission bushing for front pump body and front body locations
• Exact-fit replacement from ATP Transmission Components
• Cross-reference: National 32005

Product Details

ATP Parts CB-30 is an automatic transmission bushing engineered as a direct replacement for the original component. The listed dimensions help ensure correct fitment during transmission service, especially where front pump body or front body bushing replacement is required. This part is used across many GM rear-wheel-drive and truck/SUV applications, including Chevrolet Corvette, Silverado 1500, Tahoe, GMC Sierra 1500, Yukon, and related models. The CB-30 part number is also referenced in aftermarket catalogs for the same application.

This part cross-references National 32005 for the same application.

What It Helps Address

• Excessive transmission shaft or pump body clearance
• Wear at the front pump body bushing surface
• Transmission alignment issues during rebuild or repair
• Noise or vibration related to bushing wear
• Service replacement for front body bushing applications

Installation Notes

Verify transmission model and bushing dimensions before installation. Fitment includes 2001-2004 Chevrolet Corvette, 2001-2002 Chevrolet Silverado 1500, 2001-2002 GMC Sierra 1500, 1999-2002 GMC Yukon, and many other GM applications listed for front body or automatic transmission front pump body use. One listed application notes 2002 Chevrolet Silverado 2500 only fits 4L60-E. Confirm the transmission case and bushing location against the vehicle service information before pressing the new bushing into place.

Quality Assurance

ATP Transmission Components are exact-fit replacement parts built for direct application matching. The CB-30 is specified with published dimensions and cataloged interchange references to support accurate transmission service selection.