A4571801243 Compatible Housing Oil Nozzle — Mercedes-Benz

What does a housing oil nozzle do?

This engine component plays a vital role in the lubrication and cooling system of heavy commercial vehicle engines. By directing pressurized oil from the main gallery onto the underside of the piston, it helps dissipate heat from the combustion chamber, which is critical for protecting engine components under high thermal loads.

Compatibility and engine fitment

This specific housing oil nozzle is compatible with Mercedes-Benz engines. For correct fitment, it is essential to verify the connection style and spray configuration, as different cylinder positions may require specific tube angles to ensure oil reaches the piston base effectively.

Installation and maintenance guidance

Technicians should always verify the connection type—whether it be a bolted flange, banjo connection, or threaded body—before installation. Proper installation ensures that gallery pressure is maintained and that the spray pattern aligns perfectly with the piston skirt to prevent uneven wear or overheating.

Selection and replacement advice

When replacing this component, always consult the engine code and the original part geometry to avoid improper seating or incorrect spray direction. Maintaining this part helps prevent excessive heat accumulation in turbocharged engines and ensures long-term engine reliability.

OE cross-reference

0101 029 (Housing Oil Nozzle Crankcase) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A4571801243.