Mercedes Benz Classics: Owners Operation, Service, and Repair Workshop Manuals

Mercedes OM403 Diesel Engine Manuals

The Mercedes-Benz OM403 is a 10-cylinder V10 diesel engine with a volume of 15950cc or 17426cc with turbocharged and intercooler versions. Produced from 1975-1980


view all petrol gasoline & diesel engine manuals

Download: Mercedes OM403 Engine Service Repair Manual

Mercedes OM403 Diesel Engine Service Repair Manual

  • Variants: OM403 Diesel, OM403A Turbo Diesel
  • OM403LA Intercooler and Turbocharged Diesel
  • Multi Unit Manual: OM401, OM402, OM403, OM404*
    • * Use as Reference for OM404 V12  Engines
  • Download: 26.2mb, 216 pages, .pdf

USD $19.95

Download Link Sent to your PayPal email address


OM403 Technical Data

The Mercedes-Benz OM 403 VA, A is a V10 Compression-Ignition, Direct-Injection Multifuel Engine. The OM 403 VA development was a result of the military demand for a multifuel engine based on and sharing a maximum number of parts for a mass-produced commercial vehicle engine.

The path of development encountered many problems and setbacks, but eventually lead to the standard production of the 403 engine. The results achieved are significant in regards to the expected deterioration in the ignition quality of conventional diesel fuels, and due to the future needs to use alternative fuels of very poor ignition quality.

It was jointly developed by Daimler-Benz and MAN in the mid 1970s while preserving individual company specifics such as different combustion processes.

The engine series OM 401 V6, OM 402 V8, OM 403 V10 and OM 404 V12 complete the 400 series of diesel engines with 6 to 12 cylinders in V-arrangement.

Mercedes OM403 Diesel Motor

Variant Specifications

Variant CCM kW HP@RPM Bore/Stroke Comp. Torque @ RPM
OM403 15950 235 320@2500 125/130 17.5 1030Nm@1500 rpm
OM403 17426 259 352@2300 125/142 17.5 1226Nm@1400 rpm

Vehicle Applications

Output according to DIN 70020 Displacement Specs OM402 Applications
Variant HP KW RPM Bore Stroke CCM Vehicle Models
403.905 320 235 2500 125 130 15950 LP, LPL, LPS, LPSL, LPK 1632
LP, LPS 1932
LP, LPL2232/6x2
LPS 2032/6 x 2
LP, LPS, LPK 2232/6 x 4
403.915 320 235 2500 125 130 15950
403.916 320 235 2500 125 130 15950 1632AS,AK
1932 A, AS, AK
2632/6 x 6 A, AS, AK
403.919 320 235 2500 125 130 15950 LAPS1632
LAPK 1632
LAPK 2632/6 x 6
403.931 320 235 2500 125 130 15950 1632,K,S,LS
1932,K,S,LS
2632/6x4, S, K
2032/6 X 2/4 S
2232/6x2 CJ
2232/6 x 4, S; LS
403.932 320 235 2500 125 130 15950 1632,S,L,LS
1932, S, LS
2032/6 X 2/4 S
2232/6x2, L
2232/6 x 4, S, LS
2632/6x4, S
403.933 352 259 2300 125 142 17426 2632/6x6AK
1932AK
403.934 320 235 2500 125 130 15950 1632 L
2232/6 X 2 L
403.935 352 259 2300 125 142 17426 1932,S,K
2032/6x2/4S
2232/6x4, S
2232/6x2
2632/6 x 4 S, K

Mercedes-Benz OM 403 MARINE Engine

Mercedes OM403 Marine Engine

Version Model Codes

OM403, OM403A, OM403LA

  • OM403.900: 184KW (246HP)
  • OM403.900-001: 184KW (246HP)
  • OM403.906: 184 KW (246HP)
  • OM403.910: 211KW (296HP)
  • OM403.910-005: 236KW (316HP)
  • OM403.911: Special Version
  • OM403.916: 236 KW (316HP)
  • OM403.917: 236 KW (316HP)
  • OM403.919: 236 KW (316HP)
  • OM403.932: 236 KW (316HP)
  • OM403.934: 236 KW (316HP)
Mercedes OM403 V10 Diesel Engine