Cummins ISX15 X15 QSX Piston Cooling Nozzle | 3687058 | 1-Piece Piston | Interstate-McBee

Interstate-McBee piston cooling nozzle for Cummins ISX, ISX15, X15 and QSX engines, replacing Cummins 3687058. For one-piece piston applications, liner-located top position. Sprays engine oil onto the underside of the piston to control piston crown temperature. Supersedes Interstate-McBee M-3412860.

Key Features

• For one-piece piston applications, liner-located top position
• Covers the 15-litre Cummins platform across ISX, ISX15, X15 and QSX
• Manufactured in the USA in an ISO 9001:2015 certified facility
• Supersedes M-3412860

Specifications

• Cummins OE reference: 3687058
• Interstate-McBee part number: M-3687058
• Component type: Piston cooling nozzle
• Condition: New
• Piston type: 1-piece
• Position: Liner located, top
• Weight: 0.19 lb
• Supersedes: M-3412860
• Sold as: each (the ISX is an inline-six and takes six)

Compatibility & Fitment

• Engines: Cummins ISX, ISX15, X15 and QSX, 15 L
• Equipment: Class 8 on-highway trucks, and industrial, marine and off-highway equipment powered by the 15-litre platform

Piston type gate — this nozzle is for one-piece piston applications. The 15-litre Cummins platform was built with both one-piece and two-piece pistons, and the cooling nozzles differ. Confirm your piston type before ordering.

Second fitment gate — this is the liner-located top position nozzle. Read the part number off the nozzle you are removing and match it, or confirm your engine serial number and CPL.

Quantity note — an inline-six takes six nozzles. Replace all six during an overhaul rather than individually, since a partially blocked nozzle produces localised piston overheating that is difficult to diagnose after assembly.

Conclusion

This is the Interstate-McBee piston cooling nozzle for one-piece piston Cummins ISX, ISX15, X15 and QSX engines, replacing Cummins 3687058. Six are required per engine. Confirm your piston type and match the number on your existing nozzles before ordering.