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Cylinder Head

Gasket Set Lower STD Cummins Engine QSB 4.5

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Cummins

Cover Plate Gasket Cummins Engine QSB 4.5-Engine QSB 5.9- Engine QSB 6.7

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Cummins

Rear Crankshaft Seal Kit Cummins Engines QSB 4.5 – Engine QSB 6.7

Rear Oil Seal Kit Cummins Engine QSB 4.5 – Engine QSB 6.7

Rear crankshaft oil seal kit with a double-lip seal, designed for Cummins applications with a wet flywheel/clutch housing. Location: rear end of the crankshaft, transmission/flywheel side. Documented equivalent seal made of PTFE. Its function is to prevent engine oil from leaking from the rear end of the crankshaft, maintaining a seal during crankshaft rotation.

The following are listed: ISB4.5, ISB6.7, QSB4.5, QSB6.7, 6C8.3, 6CT8.3, 6CTA8.3, ISC, QSC, ISL, and QSL for applications with a wet clutch housing. And on other engines: 4BT3.9, 6BT5.9, 6CT8.3, 6CTA8.3, 6CTAA8.3, and QSL9

Always verify the ESN (Engine Serial Number), CPL, and wet/dry flywheel housing configuration, because the same engine may use a different rear seal depending on the configuration.

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Cummins

Rear Crankshaft Oil Seal Cummins Engine QSB 4.5 – Engine QSB 5.9 – Engine QSB 6.7

Rear Main Seal Cummins Engines QSB 4.5 / 5.9 / 6.7

Rear crankshaft oil seal located in the area where the engine block connects to the flywheel housing. Its function is to prevent engine oil from leaking around the rear end of the crankshaft and to limit the entry of contaminants. This family of oil seals is available with a PTFE sealing element.

Used on the following engines: 4B 3.9, 4BT 3.9, 4BTA 3.9, QSB 4.5, 6B 5.9, 6BT 5.9, 6BTA 5.9, ISB 5.9, QSB 5.9, ISB 6.7, QSB 6.7, B6.7, 6C 8.3, 6CT 8.3, 6CTA 8.3, ISC 8.3, QSC 8.3, ISL 8.9, QSL 8.9 / QSL9.

With final verification via ESN/CPL for the specific configuration.

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Cummins

Rear Crankshaft Seal Kit Cummins Engine QSB 4.5 – Engine QSB 5.9 – Engine QSB 6.7

Rear Main Seal Kit Cummins Engine QSB 4.5 – Engine QSB 5.9 – Engine QSB 6.7

The kit provides a seal at the rear of the crankshaft, preventing engine oil from leaking at the point where the crankshaft exits the engine block toward the flywheel/transmission housing. It is therefore installed at the rear of the engine block, on the flywheel side. The sealing component is typically made of a technical elastomer that is resistant to oil and high temperatures, combined with metal support/reinforcement elements.

Compatible engines: 4B, 4BT, 6B, 6BT, 6C, 6CT, 6CTA, ISB, QSB, ISC, QSC, ISL, QSL

However, we recommend checking the ESN/CPL before the sale: not all configurations within the same engine family necessarily use the same oil seal.

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