USA Standard Gear ZMBSHWT304-19B Manual Transmission CH465 1st Gear Bushing

The USA Standard Gear ZMBSHWT304-19B is a replacement 1st gear bushing designed for GM CH465/SM465 4-speed manual transmissions. This precision-manufactured bushing is essential for proper gear operation and smooth shifting in heavy-duty truck applications.

Key Features:

• Direct replacement for GM part number 465455 (TC304-19B)
• Specifically engineered for 1978-1991 SM465/CH465 transmissions
• Fits 1st gear position in later model transmissions
• Precision-machined to OEM specifications for proper fit and function
• Essential component for transmission rebuilds and repairs

The SM465/CH465 is a heavy-duty 4-speed manual transmission that was used in GM and Chevrolet trucks, Blazers, and Suburbans from 1968 to 1991. This bushing is a critical wear component that supports the 1st gear on the mainshaft, ensuring proper gear alignment and reducing friction during operation. USA Standard Gear manufactures high-quality replacement transmission components that meet or exceed original equipment standards, making this bushing an excellent choice for professional rebuilds or DIY transmission repairs.