VW Type 1 Main Bearing Sizing & Part Numbers

VW Bug & Type 1 Main Bearing Sizing and Part Numbers

Here you will find a chart of all available engine main bearings for VW beetles, dune buggies, sand rails, buses and any vehicle with a VW Type 1 engine.

These main bearings are measured with three measurements crankshaft diameter, crankshaft main journal diameter and thrust width. Please note that not all combinations of measurements are avaialbe as a bearing size. If the box is blank it does not exist.

VW 6 Rib Bell Housing

VW Bug Crankshaft Diameter on main bearing

Typical Measurements for Crankshaft Diameters:

  • Standard Crank: 2.164 inches
  • 10 Under Crank: 2.154 inches
  • 20 Under Crank: 2.144 inches
  • 30 Under Crank: 2.134 inches
  • 40 Under Crank: 2.124 inches

VW Bug Crankshaft Diameter on main bearing

Typical Measurements for Case Main Bearing Bore

  • Standard Bore: 2.559 inches
  • 20 Over Bore (50 mm): 2.579 inches
  • 40 Over Bore (100 mm): 2.599 inches
  • 60 Over Bore (150 mm): 2.619 inches
  • 80 Over Bore (200 mm): 2.639 inches

VW bug engine thrust main bearing size

Typical Measurements for Engine Case Thrust

  • Standard Thrust: .864 inches
  • 40 Under Thrust (100 mm): .824 inches
  • 80 Under Thrust (200 mm): .784 inches