Mercedes OM421 Diesel Engine Manuals
The Mercedes-Benz OM421 is a 6-cylinder V6 Diesel Engine with a volume of 10,965 ccm which included turbocharged and intercooler versions, which were produced from 1980-
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Download: Mercedes OM421 Engine Service Repair Manual
- OM421 Diesel Engines
- OM421A Turbo Diesel
- OM421LA Turbo Intercooled
- Multi Unit Manual: OM421,
OM422, OM423,
OM424*
- * Use as Reference for OM424 Engines
- Download: 29.2mb, 256 pages, .pdf
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$19.95
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Download: Mercedes OM421 Engine Operation and Maintenance
Owner Operation Manual Language: English
- OM421 Diesel Engines
- OM421 A Turbo Diesel
- OM421 LA Turbo Intercooled
- Multi Unit Manual: OM421, OM422, OM423, OM424
- Download: 44.7mb, 100 pages, .pdf
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$14.95
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Download: Mercedes OM421 Engine Scheduled Service Booklet
Multi Language: German, English, French, Spanish
- OM421 Diesel Engines
- OM421 A Turbo Diesel
- OM421 LA Turbo Intercooled
- Multi Unit Manual: OM421, OM422, OM423, OM424
- Download: 19.2mb, 55 pages, .pdf
USD
$9.95
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Mercedes OM421 Technical Data
The OM421 is a four-stroke V-6 cylinder diesel engine manufactured by Mercedes-Benz with a volume of 10,965 cubic centimeters, corresponding to approximately 657 cubic inches. This second generation of V6 diesel engines appeared in 1980 and was equipped with intercooler, and developed a capacity of 190 kW (253 hp). Most of the engines were produced for export. As in the OM 401, the OM421 is the smallest V-engine of second generation 400 series, but also has a turbocharger and intercooler.
Engine Mercedes OM 421
The OM421 engine is designed with consideration of environmental norms Euro II. The OM 421 was widely used since the 1990s in road engineering and average tonnage trucks as well as combine harvesters, including combine harvester CLAAS Commandor 115 CS.
Engine Mercedes OM 421 A
The OM421A Four-stroke turbocharged diesel engine offers a volume of 10,965 cubic centimeters (657 cubic inches). Engine OM 421 A was released in 1980 and effectively replaced the predecessor - OM 401 A. Most of the engines were produced for export with consideration of environmental norms Euro II. They were widely used since the 1990s in road engineering and average tonnage trucks. OM 421 A is also used in combine harvesters, including combine harvesters New Holland TF44.
Engine Mercedes OM 421 LA
The OM421LA added a Turbocharger and Intercooler for additional horsepower and torque where needed in applications.
The engine series OM 421, OM 422, OM 423 and OM 424 replaced the earlier 401-404 series of diesel engines with 6 to 12 cylinders in V-arrangement . These second generation motors were release in 1980 and included larger volume and increased horsepower with turbocharged and intercooler features boosting their performance.
Variant Specifications
| Variant | CCM | kW | HP@RPM | Bore/Stroke | Comp. | Torque @ RPM |
|---|---|---|---|---|---|---|
| OM421 | 10964 | 159 | 216@2300 | 128/142 | 16,9:1 | 785Nm@1200 rpm |
| OM421A | 10964 | 186 | 250@2300 | 128/142 | 16,9:1 | |
| OM421LA | 10964 | 208 | 280@2300 | 128/142 | 16,9:1 | |
| OM421 Variant Model Engine Codes | ||||||
| OM421.905 | 10964 | 159 | 216@2300 | 128/142 | 16,9:1 | 785Nm@1200 rpm |
| OM421.906 | 10964 | 159 | 216@2300 | 128/142 | 16,9:1 | 785Nm@1200 rpm |
| OM421.907 | 10964 | 159 | 216@2300 | 128/142 | 16,9:1 | 785Nm@1200 rpm |
| OM421.910 | 10964 | 159 | 216@2300 | 128/142 | 16,9:1 | 785Nm@1200 rpm |
Vehicle Applications
The OM421 was used in many industrial applications including generators
| OM421 Applications | Output according to DIN 70020 | Displacement Specs | |||||
| Chassis Models | Variant | KW | HP | RPM | Bore | Stroke | CCM |
|---|---|---|---|---|---|---|---|
| 615.026/027/028 615.122 615.222 616.024/026/027/028 616.121/122 616.417/419/424/426/ 427/428 616.521 /522 617.023/024/026/ 028/029 617.121/122/126/127 617.326 617.424/425/426/ 427/428 619.017/019 619.036/037/045/047 619.137/138 619.208/209 619.4,17/419 621.005/006/007/008 621.101/102/106/107 621.306/307/327 |
421.905 | 159 | 216 | 2300 | 128 | 142 | 10964 |
| 615.021/064 615.221/224/226/264 616.022/065 619.045 |
421.906 | 159 | 216 | 2300 | 128 | 142 | 10964 |
| 619.045 | 421.907 | 159 | 216 | 2300 | 128 | 142 | 10964 |
| 396.356/358 | 421.910 | 159 | 216 | 2300 | 128 | 142 | 10964 |
The entire series is as follows:
