A3521800143 Mercedes-Benz Housing Oil Nozzle

What does a housing oil nozzle do?

This engine component plays a vital role in the lubrication and cooling system of heavy-duty diesel engines. By spraying pressurized oil onto the underside of the piston skirt, it effectively removes heat accumulated from the combustion chamber, preventing thermal stress and ensuring long-term engine reliability.

Engine compatibility and function

This specific housing oil nozzle is compatible with Mercedes-Benz engines. It functions within the crankcase to manage pressure and provide necessary lubrication to the piston pin and connecting rod small-end bushing, which is essential for maintaining engine integrity under heavy commercial vehicle workloads.

Installation and maintenance guidance

For correct installation, technicians should verify the connection style and spray tube angle against the existing part. It is critical to ensure the nozzle seats correctly in the block gallery to prevent pressure drops or improper oil distribution. Always consult service data regarding check valve opening pressures during replacement.

Selection and troubleshooting

Selecting the correct nozzle is vital for thermal balance. An incorrect fitment can lead to oil hitting the cylinder liner instead of the piston base, potentially causing engine damage. Consult your authorized distributor to ensure exact fitment for your specific engine code.

OE cross-reference

0101 031 (Housing Oil Nozzle Crankcase) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A3521800143.