Engine Specs - S54 Rod Bearings

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Bearings Specification, Dimensions, Clearance

OEM 439/440 Bearings

Production and Composition

The composition is a standard babbit lead/copper bearing. They are soft faced, and easy on the crankshaft.

Manufacturer: Clevite. Clevite logo is seen on the back of the bearings.
Composition: Trimetal lead/copper

Bearing

Dimensions (439/440 Bearings)

Metric Dimensions SAE (Inch) Dimensions
Bearing

Width (Blue, Red)

15.8140 mm 0.62260 inch
Nominal

Bearing Thickness (Top, Blue)

1.9990 mm 0.07870 inch
Nominal

Bearing Thickness (Bottom, Red)

1.9939 mm 0.07850 inch
Bearing

Thickness Variance (Top, Blue)

1.9964 - 2.0041 mm 0.07860 - 0.07890 inch
Bearing

Thickness Variance (Bottom, Red)

1.9939 - 1.9939 mm 0.07850 - 0.07850 inch
Bearing Tolerance (Top, Blue) -0.0025 - 0.0051 mm -0.00010 - +0.00020 inch
Bearing Tolerance (Bottom,

Red)

0.0000 - 0.0000 mm 0.00000 - +0.00000 inch