Aftermarket replacement camshaft bearing/bushing for selected Cummins B-Series diesel engine applications. Replaces Cummins part numbers 3940059 and 4983253. Commonly used with select 4B, 4BT, 6B, 6BT, ISB and QSB engines, including 3.9L, 4.5L, 5.9L and 6.7L applications. This camshaft bushing provides a supporting surface for the camshaft and is suitable for engine rebuild and repair applications. Includes 1 camshaft bearing/bushing. Please verify part number 3940059 or 4983253 and confirm compatibility with your engine serial number, CPL and engine configuration before ordering.
OEM REPLACEMENT NUMBERS – Aftermarket camshaft bearing/bushing replaces Cummins 3940059 and 4983253. Verify your original part number before ordering.
CUMMINS B-SERIES APPLICATIONS – Designed for selected Cummins 4B, 4BT, 6B, 6BT, ISB and QSB diesel engine applications.
ENGINE COMPATIBILITY – Commonly used with 4B3.9 / 4BT 3.9L, B5.9 / 6BT 5.9L, ISB 5.9L, QSB4.5 and QSB6.7 engines.
CAMSHAFT SUPPORT – Replacement camshaft bearing helps provide the proper support and running surface for the camshaft during engine operation and rebuild service.
VERIFY BEFORE ORDERING – Fitment may vary by engine serial number, CPL and engine configuration.
