MB5B –

Genuine Cummins 3687058 piston cooling oil nozzle for compatible Cummins ISX15 and QSX15 diesel engines.

This OEM piston cooling nozzle delivers a directed stream of engine oil to the underside of the piston, helping control piston temperatures during engine operation. Proper piston cooling is especially important in heavy-duty diesel engines operating under high combustion temperatures and demanding loads.

The 3687058 is used in the engine lubrication system and is installed in the piston cooling nozzle assembly. It is suitable for compatible Cummins engine rebuilds, in-frame overhauls, and replacement of damaged or restricted piston cooling nozzles.

Product Specifications:

Manufacturer: Cummins
Part Number: 3687058
Part Type: Piston Cooling Oil Nozzle / Piston Oil Squirter
OEM Reference Numbers: 3412860, 3680496
Engine Applications: Cummins ISX15 and QSX15
Engine Displacement: 15.0 Liters
System: Engine Lubrication / Piston Cooling
Installation Location: Engine Block, beneath the piston
Function: Directs lubricating oil toward the underside of the piston for cooling
Quantity: 1 Piston Cooling Nozzle

Verify compatibility using your engine serial number and original part number before ordering. Banjo bolts, sealing washers, and additional mounting hardware are not included unless specifically shown in the product photos.

A3687058

Cummins used 3687058 Piston Cooling Oil Nozzle – ISX15 QSX15 3412860 3680496