A4601800443 Mercedes-Benz Compatible Housing Oil Nozzle

What does a housing oil nozzle do?

This engine component is essential for the thermal management of heavy-duty diesel engines. By directing a precise spray of pressurized oil onto the underside of the piston, it effectively removes heat from the piston crown and provides lubrication to the piston pin and connecting rod small-end bushing. This process is critical for preventing overheating and reducing friction during high-load operations.

Compatible vehicles and engines

This part is specifically designed to be compatible with Mercedes-Benz engines. It functions within the crankcase assembly, receiving oil from the main gallery to ensure the piston receives adequate cooling even under extreme thermal loads. Maintaining this component helps prevent issues like piston ring sticking in turbocharged applications.

Installation and maintenance

When performing replacement, technicians should verify the connection style—whether it be a bolted flange, banjo connection, or threaded body—to ensure a proper seal. It is highly recommended to match the spray tube angle and check valve opening pressure with the original component to ensure the oil reaches the piston base correctly rather than hitting the cylinder liner wall.

Selection guidance

Consult your authorized distributor for more information regarding fitment and installation requirements.

OE cross-reference

0101 030 (Housing Oil Nozzle Crankcase) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A4601800443.