1. Basic Information

• Item: Starter Drive Gear
• Model: XH - 538
• Function: Meshes with the engine flywheel to transfer starter torque for smooth engine startup.

2. Compatibility

• Delco: 15GR Series, OSGR, 20MT Series, 25MT Series, 27MT Series DD Starters；
• General Motors Brands: Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac (used in 1969–1978 applications).

3. OEM Reference Codes

4. Specifications

• Teeth (T): 10
• G Dimension: 32
• Length (L): 81
• Splines (SPL): 3
• Inner Diameter (ID): 14.3
• Diameter (D): 60
• Rotation Direction: Clockwise (CW)