Loaded Cylinder Head for CAT C13 C11 ACERT Diesel
Loaded Cylinder Head for CAT C13 C11 ACERT Diesel
Overview
Brand-new loaded cylinder head for the CAT C13 ACERT and C11 ACERT inline 6-cylinder diesel - a one-piece head that seals the combustion chamber and carries the valves, springs, injectors and rocker assembly on these engines. The C13 and the C11 share the same cylinder head, and one casting covers all six cylinders, so a complete engine takes just one. It ships fully assembled with the valvetrain already installed, so there is no machine shop time before you bolt it on.
Includes: Valves, heavy-duty springs, retainers, keepers, valve guides, valve seats and valve stem seals - all installed
Fitment
| Engine | Fits the CAT C13 ACERT (12.5L) and C11 ACERT (11.1L) inline 6-cylinder diesel - both engines use the same cylinder head |
| Engine Years | 2004-2010 in on-highway trucks; industrial, generator set and marine C13 ACERT engines ran through 2019 and later |
| Engine Serial Prefix | KCB (2004-2006, no DPF) and LEE (2007-2010, DPF) - the head is the same for both |
| Vehicle | Fits Kenworth W900, T800, T660, T2000 and C500 with a CAT C13; fits Peterbilt 379, 386, 387, 388, 389, 367, 365 and 357 with a CAT C13; fits Freightliner Columbia, Century, Coronado and Classic XL; fits Western Star 4900 and 4800 |
| Vehicle Years | 2004-2010 (Class 8 tractors, vocational trucks, motorhomes and fire apparatus built with these engines) |
| Application | Fits equipment powered by the C11 or C13 ACERT: 345C, 345D, 349D and 349E excavators; 966H (C11), 972H, 980K and 980M wheel loaders; 725 (C11), 730 and 735 articulated trucks; 14M, 16M and 18M motor graders; 621H, 623H and 627H wheel tractor-scrapers |
| Replaces | 3050617, 10R2602, 10R6392, 10R9922, 10R3394, 257-2170, 224-0878, 240-8271, 249-6672, 257-4095, 3086358, 3453752, CA3050617 |
Why It's Better
- Brand-new casting - a new head with no heat-cycle history, never welded, never re-decked and with no repaired cracks
- Complete new valvetrain - valves, heavy-duty springs, retainers, keepers, valve guides, valve seats and stem seals installed
- Machined for MEUI - the injector bores and seats are cut for the C13 and C11's mechanically actuated unit injectors, so your original injectors go straight back in
- Pressure tested and vacuum checked, with a precision-machined deck for a clean gasket seal
Specifications
| Material | Cast iron, brand-new casting |
| Valvetrain | 4 valves per cylinder (24 valves total) |
| Displacement | 12.5L (762 cu in) C13 / 11.1L (677 cu in) C11 |
| Fuel System | MEUI (mechanically actuated electronic unit injector) |
| Condition | New aftermarket replacement |
| Quantity Per Engine | 1 (one-piece head, covers all 6 cylinders) |
| Warranty | 12 months |
Shipping & Warranty
Free shipping within the continental USA. In-stock orders are processed within 1-2 business days.
Buying by the pallet? Quantity discounts are available - send us the part number and the quantity you need and we will come back with tiered pricing and lead time.
Backed by a 12-month warranty against manufacturing defects.
Frequently Asked Questions
Q: How do I confirm it fits?
Match the number on your original head against the Replaces list, or check your engine serial number prefix - KCB for 2004-2006 and LEE for 2007-2010. Both prefixes use the same head, and so does the C11 ACERT. Send us your engine serial number and we will verify it before shipping.
Q: How many do I need?
One. This is a single one-piece head that covers all six cylinders, so a complete engine takes just 1 cylinder head.
Q: What equipment does this cylinder head fit?
It fits Class 8 trucks built with a CAT C13 - fits Kenworth W900, T800 and T660, fits Peterbilt 379, 386 and 387, fits Freightliner Columbia and Century and fits Western Star 4900 - plus the machines in the Application row above, including the 345D and 349E excavators, the 972H and 980M wheel loaders, the 730 and 735 articulated trucks and the 14M and 16M motor graders.
Q: Does it fit a C15, C9 or C7 machine?
No. This head fits the C13 and C11 ACERT engines only. Machines such as the D8T dozer, the 980H loader and the 140M motor grader run different engine families and take a different cylinder head.
Q: Can I reuse my original head bolts?
No - they are torque-to-yield and cannot be reused. Install new bolts or upgrade to head studs.
This is an aftermarket replacement part. We are not affiliated with, authorized by, or endorsed by the original equipment manufacturer. All trademarks and brand names are the property of their respective owners and are used for reference purposes only.