Classification of main bearings

WARNING: This page is about a different car, the 2001 Volvo C70, 2000 Volvo C70, and 1999 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Classification Of Main Bearings

Courtesy of VOLVO CARS OF NORTH AMERICA.

The marking is stamped on the cylinder block and crankshaft.

Cylinder block classification / Crankshaft classification	A small diameter	-	B medium diameter	-	C large diameter	-
-	block	intermediate section	block	intermediate section	block	intermediate section
A small	yellow medium	yellow medium	yellow medium	blue thick	blue thick	blue thick
B medium	red thin	yellow medium	yellow medium	yellow medium	yellow medium	blue thick
C large	red thin	red thin	red thin	yellow medium	yellow medium	yellow medium