Description:
The Cummins Engine Oil Fill Cap (Part# 2869221) is an OEM component engineered to maintain a tight, reliable seal at the engine oil fill port on Cummins diesel engines. This cap helps prevent oil leakage, dirt ingress, and moisture contamination, ensuring clean oil circulation and proper engine operation.
Features:
Part#: 2869221
Brand: Cummins
Product Type: Engine Oil Fill Cap
Function: Seals oil fill port
Seal Type: Integrated gasket / O-ring (if applicable)
Installation: Twist-on / press-fit (application dependent)
Operating Environment: High heat, oil exposure, vibration
Condition: New
Application Diesel engines: Cummins ISX, ISX15, ISZ13, QSX15 (truck, generator, industrial)
Material: Typically ABS plastic (durable, oil-resistant)
Colour: Black
Finish: Matte or plain finish
Diameter (Approx.): ~ 2.50 in (63.5 mm) overall cap diameter (varies slightly by supplier)
Thread Size / Pattern: ~ 2.250″-5 thread (common in fleet/ISX engines)
Cap Depth: ~ 0.900 in (23 mm) from top to sealing surface (after threads)
Weight: Approx 0.07–0.09 lb (~30–40 g)
Sealing Method: Thread-in with integrated gasket/seal (prevents oil splash and ingress of dirt/moisture)
OEM Fitment: Specific designed to match Cummins engine filler neck dimensions (not universal)
Brand: Cummins
