The complete cylinder head assembly with reference numbers 908570 and 908670 is designed for Mercedes-Benz OM602 2.5L diesel engines. This aluminum alloy cylinder head features SOHC 10-valve configuration with indirect injection compatibility, delivering reliable performance for Mercedes-Benz C-Class, E-Class, T1, and related classic vehicle platforms.
Quick Specifications:
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Part Numbers: 908570 / 908670 (Mercedes OEM format)
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Engine Code: OM602 / OM602.912 / OM602.962 (OM602 Family)
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Displacement: 2.5 L (2,497 cc)
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Configuration: Inline-5 SOHC 10V, Naturally Aspirated / Turbocharged
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Fuel System: Indirect Injection (IDI) with Distributor Pump
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Material: Aluminum Alloy
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Valve Configuration: SOHC 10-Valve (2 valves per cylinder)
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Valve Train: Mechanical lifters, adjustable rocker arms
Performance Data:
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Power Output: 66-90 kW (90-122 HP) @ 4,600-5,000 RPM (variant-dependent)
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Torque: 155-220 Nm @ 2,400-2,800 RPM
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Compression Ratio: 21.0:1 - 22.0:1
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Emission Standard: Pre-Euro / Euro 1 / Euro 2
Complete Assembly Typically Includes:
✅ Cylinder head casting with integrated camshaft bearing bores
✅ Intake and exhaust valves with hardened seats
✅ Valve springs, retainers, and collets
✅ Camshaft with lobes for 10-valve actuation (supplier-dependent)
✅ Rocker arms and rocker shaft assembly
✅ Valve stem seals (pre-installed on new assemblies)
✅ Camshaft oil seal and glow plug tube seals
✅ Injector sleeve bores machined to OEM spec
✅ Core plugs and basic mounting hardware
✅ Intake/exhaust port gasket surfaces machined to OEM spec
Note: Fuel injectors, glow plugs, distributor pump, intake manifold, and exhaust manifold are typically sold separately.
Applications:
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Mercedes-Benz W124 E250 / 250D / 250TD (1985-1995, OM602 variants)
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Mercedes-Benz W201 190D 2.5 (1985-1993, OM602 variants)
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Mercedes-Benz W202 C250 Diesel (1993-2000, OM602 variants)
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Mercedes-Benz T1 / TN van (2.5D OM602 variants)
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Mercedes-Benz G-Class W460 / W461 (select 2.5D applications)
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Mercedes-Benz Unimog / commercial chassis (OM602-sourced variants)
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Classic Mercedes restoration & aftermarket projects