Camshaft: Application and ID

CAMSHAFT IDENTIFICATION:

Camshaft Identification Markings:

Identification numbers and letters are stamped between intake and exhaust cam lobes:
Cylinder No. 1, marking at arrow I is "B"
Cylinder No. 3, marking at arrow II is "037"
Cam lobe base circle: -a- = 34 mm

RECONDITIONED CYLINDER HEADS:

Camshaft, Reconditioned Marking:

Reconditioned cylinder heads or replacement engines are sometimes supplied with camshaft bearing shells.
Cylinder head with standard camshaft:
Dimension -a- = 26.00 mm (1.0236 in.)
Cylinder head with undersize camshaft: [1]
Dimension -a- = 25.75 mm (1.0138 in.)

Note: Undersize camshaft is not supplied as replacement part. For replacement, install standard dimension camshaft with appropriate bearing shells.

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[1]: Marked with yellow paint dot on VW-Audi logo.