Description
Cummins 3687932 Engine Oil Filler Cap
Used primarily on EPA‑13 Cummins ISX15 and QSX15 engines. It’s a genuine Cummins service part designed to seal the oil fill port, prevent contamination, and maintain proper crankcase pressure.
Sources: Cummins Shop, Raney’s Truck Parts, Peterbilt Parts.
Function:
– Seals the oil fill opening
– Prevents dirt, debris, and moisture from entering the crankcase
– Maintains proper crankcase ventilation and pressure balance
Construction:
– High‑temperature‑resistant polymer
– Precision‑molded sealing surface
– OEM‑grade fitment for ISX/QSX valve covers
Refer to original manufacturer for any applicable warranties.
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