New Holland J945022 Bare Cylinder Head Assembly

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New Holland J945022 Bare Cylinder Head Assembly

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Part Type	Bare Cylinder Head (Without Valves)
Engine Application	Cummins 8.3L ISC/QSC Inline-6 Diesel
Material	Alloy Cast Iron
Number of Cylinders	6
Valve Configuration	4-Valve Per Cylinder (24-Valve Head)
Fuel Type	Diesel
Aspiration Type	Turbocharged & Aftercooled
Emission Standard	Tier 3 / Tier 4a
Weight	65 kg
Package Dimensions	65 × 45 × 35 cm

Manufacturer No.

J945022
84181912R
JR948583
JR945023
J945023
J948583

OEM Part No.

39435600
3948583
3945022
3945023
84181912
84181967
87775221

Engine Part No.

Cummins ISC 8.3L
Cummins QSC 8.3L

Interchange No.

3412277
3943566-00

Fitment Vehicles

New Holland TG255
New Holland TG285
New Holland TJ275
New Holland TJ325
Case IH MX240
Case IH MX270
Case IH MX285
Case IH MX255
Case IH STX325
Case IH STX275
Case IH CX330
Case IH FLX3300B
Case IH FLX3330B
Case IH CPX610
Case IH CPX620

Technical specification for bare cylinder head casting compatible with CNH Industrial Tier 3 and Tier 4a agricultural tractors. The component serves as the upper closure of the engine block, housing the valvetrain, fuel injectors, and intake/exhaust ports for the Cummins 8.3L inline-six diesel engine.

Constructed from high-strength alloy cast iron to withstand high combustion pressures and thermal cycling. Features precision-machined combustion deck surface, valve guide bores, injector sleeves, and coolant passages. Supplied bare without valves, springs, or rocker arms; requires professional machining inspection and valvetrain assembly prior to installation. Interchanges with CNH Global part numbers J945022, 84181912R, 39435600, and casting numbers 3412277, 3943566-00.