Description
Mercedes-Benz OM651 Cylinder Head Assembly – Valves & Camshafts Pre-Installed
This OM651 cylinder head assembly is a brand new, factory-fresh cylinder head built to OEM standards. It comes with the complete valvetrain pre-installed, including intake and exhaust valves, valve springs, camshafts, hydraulic lifters and all related internal components. You simply transfer your existing external parts – saving significant time and labour during installation.
The OM651 is a 2.1-litre 4-cylinder common-rail turbo diesel engine widely used in Mercedes-Benz passenger cars, SUVs, vans and light commercial vehicles. This head is manufactured to exact original tolerances and pressure-tested for reliable, long-lasting performance.
What’s Included – Complete Cylinder Head Assembly
This listing is for the cylinder head with the following components pre-installed and ready to use:
- Cylinder head casting – precision-machined, pressure-tested
- 16 valves – intake and exhaust valves, heat-resistant (4 per cylinder)
- Valve springs, spring seats and retainers
- Valve stem seals (already fitted)
- Valve guides (pressed in)
- Camshafts – intake and exhaust (DOHC)
- Hydraulic lifters / tappets (pre-installed)
- Camshaft bearing caps and bolts (torqued to specification)
- Core plugs and oil gallery plugs (installed)
- Valve clearances pre-set – no manual adjustment required
Note: This is a cylinder head assembly, so the following external components are NOT included and must be transferred from your old head or purchased separately:
- Valve cover / rocker cover
- Timing chain, tensioner and guides
- Fuel injectors and glow plugs
- Intake and exhaust manifolds
- Turbocharger
- Camshaft sensors, actuator solenoids and wiring
Vehicle Compatibility
The OM651 2.1L diesel engine was fitted to a wide range of Mercedes-Benz models. Always verify your engine code and OEM part number before purchase. Common applications include:
- Mercedes-Benz C-Class (W204/W205) – C200 CDI, C220 CDI, C250 CDI
- Mercedes-Benz E-Class (W212/W213) – E200 CDI, E220 CDI, E250 CDI
- Mercedes-Benz S-Class (W221/W222) – S250 CDI, S300 BlueTEC (select markets)
- Mercedes-Benz GLK / GLC – 220 CDI, 250 CDI
- Mercedes-Benz Vito / Viano (W639/W447) – 110 CDI, 113 CDI, 116 CDI
- Mercedes-Benz Sprinter (W906/W907) – 210 CDI, 213 CDI, 216 CDI, 219 CDI, 310 CDI, 313 CDI, 316 CDI, 319 CDI
- Other vehicles equipped with the OM651 engine (confirm via OEM number)
Technical Specifications
| Engine Code | OM651 |
| Displacement | 2.1 Litre (2143 cc) |
| Configuration | Inline 4-cylinder, DOHC 16-valve |
| Fuel Type | Diesel |
| Valvetrain | Double overhead camshaft, hydraulic lifters |
| Condition | Brand New – Cylinder Head Assembly |
| OEM Part Numbers | AMC 908723 / 908923 / Mercedes-Benz A6510101120 / A6510102720 / A6510103220 |
| Warranty | 18 months |
Why Choose This OM651 Cylinder Head Assembly
- 100% brand new – never reconditioned or repaired
- Pressure-tested and vacuum-tested for leaks
- OEM-grade materials and exact machining tolerances
- Pre-installed valves and camshafts save hours of fitting time
- Comes with an 18-month warranty for peace of mind
- Packed in a reinforced crate for safe international freight
- Fast global shipping to port or door
If you need a Mercedes OM651 cylinder head for sale or a complete replacement head assembly, this unit gives your engine a factory-fresh start. Order now for a reliable, direct-fit solution.
More Cylinder Heads & Quick Contact
- Browse more cylinder heads: View our complete cylinder head catalog for Mercedes and BMW.
- Need help? Contact us directly on WhatsApp for fast compatibility checks and shipping quotes.
Additional Technical Resources
- Mercedes-Benz OM651 engine on Wikipedia – technical background.
- OM651 engine specifications at engine-specs.net – detailed data.
