Crankcase Breather For Cummins X15 XPI Engine 5679573 5417366 4974922 Black

Crankcase Breather for Cummins X15 XPI Engine

This crankcase breather is a direct-fit replacement for the Cummins X15 XPI engine, cross-referenced to OEM part numbers 5679573, 5417366, and 4974922, and it manages crankcase pressure to keep oil mist and blow-by gases vented away from the engine.

Overview

This crankcase breather is built to replace the factory breather on the Cummins X15 XPI engine, helping regulate internal crankcase pressure and separate oil from blow-by gases. It is a straightforward service part for fleets, owner-operators, and shops maintaining Cummins X15 XPI engines. The crankcase breather installs in the original location and matches the mounting and connection points of the OEM unit.

Built For Performance

• Direct replacement for OEM part numbers 5679573, 5417366, and 4974922
• Housing finished in black for a clean, factory-style appearance
• Designed to vent crankcase pressure and reduce oil mist carryover
• Constructed to withstand continuous duty in heavy-truck engine bays
• Seals and mounts at the factory breather location for a direct fit

Fits These Machines

• for Cummins X15 XPI engine

On-The-Job Use

• Routine crankcase ventilation service on Cummins X15 XPI engines
• Fleet maintenance programs keeping blow-by and oil mist under control
• Engine rebuilds and top-end service work
• Replacing a clogged or damaged factory breather

Specs At A Glance

Good To Know

Q: How do I know this breather fits my engine? A: Match the OEM cross-reference numbers 5679573, 5417366, or 4974922 against the part currently on your Cummins X15 XPI engine before ordering.

Q: Does the black finish affect performance? A: No, the black coating is cosmetic and does not change how the breather vents crankcase pressure or fits the engine.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.