Caterpillar C15 3406E Bare Cylinder Head Casting | 2239250 | New

New aftermarket Caterpillar cylinder head, OE reference 223-9250 (2239250), supplied as a bare head — complete with valve guides, seats, injector cups, and cam bearings installed, but without valves and springs. It's a direct replacement casting for Caterpillar C15, C16, C18, and 3406E applications, machined to restore OEM sealing and compression; add your valves and springs to complete the head.

Key Features:

• Bare head — supplied without valves and springs (add your own valvetrain), so you can install new or reuse serviceable valves and springs
• Not a stripped casting: valve guides, seats, and injector cups installed, and cam bearings installed; valve bridges included in the box (customer-installed)
• High-strength, alloyed cast-iron casting; OE reference 223-9250, a clean casting free of core sand
• Machined to OEM deck-flatness and mating-surface spec; works with standard and oversize valve guides and inserts per the OE design
• Direct replacement casting for the listed C15/C16/C18/3406E applications

Specifications:

• Base part number: 223-9250 (also searched 2239250)
• Component type: Cylinder head, bare (no valves or springs)
• Valve configuration: 24-valve (4 per cylinder); valves and springs NOT included
• Included components: valve guides, seats, injector cups, and cam bearings installed; valve bridges in-box
• Condition: New (aftermarket)
• Material: high-strength, alloyed cast iron
• Engine: Caterpillar C15 / C16 / C18 / 3406E (inline-6, 15.2 L, SOHC, 24-valve)

Compatibility / Fitment:

• Caterpillar C15, C16, C18, and 3406E engines — the OE 223-9250 application range
• Primary applications: on-highway trucks; off-highway trucks (773GC); motor graders (24M); large excavators (365C, 374, 385C); wheel tractor-scrapers (621–657); track-type tractors (D8, D9); marine engines; and generator sets (SR4/SR4B, D450GC–D600GC)
• Completion note: this bare head needs valves and springs to complete — reuse your serviceable valvetrain or supply a new set (valve bridges are already in the box)
• Fitment gate: verify your engine serial/arrangement against the 223-9250 casting before ordering — the C15 uses this casting on ACERT-family applications; earlier non-ACERT C15/C16 heads use a different casting
• Verify against the casting/part number on the head being replaced

Popular Cross-References / Interchanges:

• Caterpillar OE: 223-9250 (2239250)
• Caterpillar Reman: 20R-2647, 20R-2648
• More interchanges available in our Interchange Part Numbers tab

Conclusion:

The N223-9250B is a new aftermarket Caterpillar bare cylinder head for C15, C16, C18, and 3406E engines — supplied with guides, seats, injector cups, and cam bearings installed, and valve bridges in-box, but without valves and springs. It's a direct-replacement casting machined to OEM specifications; add your valvetrain to complete the head.