A-3912473-AI Seal; Rectangular Crankshaft
A-3912473-AI Seal; Rectangular Crankshaft
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One New Aftermarket Replacement Rectangular Crankshaft Seal for Cummins B Series Engines
This rectangular crankshaft sealing ring is used in the Cummins B Series diesel engine family, providing a critical oil-tight seal at the crankshaft. Also described as a rectangular or square sealing ring, this part is a direct replacement for Cummins OEM part number 3912473 and supersedes earlier number 3906699. It is commonly serviced during engine overhaul, rebuild, or crankshaft seal replacement on Cummins 4B, 4BT, 4BTA, 6B, 6BT, and 6BTA engines found in agricultural, construction, industrial, and on-highway applications.
Compatible Engines
Cummins B Series: 4B 3.9L, 4BT 3.9L, 4BTA 3.9L, 6B 5.9L, 6BT 5.9L, 6BTA 5.9L
Replaces Part Number(s):
3912473, 3906699
Aftermarket Interchange Numbers
A-3912473-AI, A-3912473, CUM3912473, PAI 136031, M-3912473
New aftermarket replacement part - not remanufactured, not used.
