A4729900123
Cylinder Crankcase Breather Screw
Detroit Diesel

The crankcase breather screw serves a crucial function in maintaining optimal crankcase pressure and preventing sludge buildup within the engine. Extended to 170mm, this screw is designed for effective sealing and proper venting of crankcase gases. The mounting hole with a diameter of 10.80mm ensures secure attachment, facilitating easy installation and removal during engine servicing. Crafted from corrosion-resistant steel, it withstands the harsh environments typical of heavy-duty engine compartments. Its precise threading and length are engineered to match specific breather system requirements, ensuring a tight seal that prevents oil leaks and contamination ingress. Proper venting reduces crankcase pressure, prolongs engine life, and enhances performance. This part plays a vital role in the engine's breathing system, contributing to cleaner emissions and efficient operation. Source One Parts Center provides expert guidance on sourcing and compatibility for this essential component.