Caterpillar C15 3406E Piston Cooling Nozzle | 2764637 | New

New aftermarket piston cooling nozzle (part number 2764637) for Caterpillar C15, C15 ACERT, 3406E, and C16 diesel engines. This oil-fed jet sprays engine oil onto the underside of the piston to control crown temperature, restoring factory piston cooling. Manufactured by FP Diesel.

Key Features:

• New aftermarket piston cooling nozzle, part number 2764637 (FP Diesel)
• Sprays pressurized engine oil onto the piston underside to manage piston temperature
• Fits Caterpillar C15, C15 ACERT, 3406E, and C16 engines
• Supersedes earlier Caterpillar nozzle numbers including 168-4539, 197-9336, and 197-9361
• Restores OE-spec piston cooling and oil delivery

Specifications:

• Base part number: 2764637 (FP Diesel FP-2764637)
• Component type: Piston cooling nozzle (engine-oil jet)
• Condition: New — Aftermarket (FP Diesel)
• Engine make: Caterpillar
• Engine models: C15, C15 ACERT, 3406E, C16
• Caterpillar supersession references: 168-4539, 197-9336, 197-9361, 277-3076

Compatibility / Fitment:

• Fits Caterpillar C15, C15 ACERT, 3406E, and C16 diesel engines
• Oil-gallery-fed piston cooling jet — one per cylinder
• A 6-cylinder engine uses six nozzles; order to match your cylinder count
• Piston cooling nozzles superseded across production runs — verify by Caterpillar part number and engine serial before ordering

Conclusion:

The FP Diesel 2764637 (276-4637) is a new aftermarket piston cooling nozzle for Caterpillar C15, C15 ACERT, 3406E, and C16 engines, superseding earlier Caterpillar numbers including 168-4539 and 197-9336. It sprays engine oil onto the piston underside to restore factory piston cooling. Verify Caterpillar part number and engine serial to confirm exact fit.