Medium Tactical Vehicle Replacement

MTVR
MTVR MK23 standard cargo trucks with Armor Protection Kits (APKs) and armored rear troop carrier compartments
TypeFamily of 6x6 tactical trucks with 7-tons of off road payload (U.S. tons). On road payload up to 15 U.S. tons.
Place of originUnited States
Service history
In service2001–present
Used byU.S. Marine Corps and others (see Operators)
Production history
DesignerOshkosh Defense
Designed1996 (initial development contract)
ManufacturerOshkosh Defense
Produced1999–present
No. built11,359 to U.S. Marines/Navy, plus 430 (est.) export sales
Variants(full details in main text)
  • MK23 - standard cargo truck, 184 in wheelbase
  • MK25 - standard cargo truck with winch, 184 in wheelbase
  • MK27 - extended cargo truck, 216 in wheelbase
  • MK28 - extended cargo truck with winch, 216 in wheelbase
  • MK29 - dump truck without winch, 184 in wheelbase
  • MK30 - dump truck with winch, 184 in wheelbase
  • MK36 - wrecker, 216 in wheelbase
  • MK31 - tractor, 184 in wheelbase
  • MK28C - replacement for Special Purpose Vehicle types, 216 in wheelbase
  • MK37 - HIMARS resupply, 216 in wheelbase (based on MK27)
  • MK38 - HIMARS trailer
MK23 standard cargo truck
Specifications
Mass13,200 kg (29,100 lbs) (curb w/fuel)
Length8 m (314.9 in)
Width2.49 m (98 in)
Height3.185 m (125.4 in) (cab; reducible for transport)
Crew2

Armora-kit/b-kit; U.S. Army Long Term Armor Strategy (LTAS) compliant
EngineCaterpillar (CAT) C-12 Advanced Diesel Engine Management (ADEM) III, 11.9-liter, 6-cylinder inline water-cooled diesel developing 425 hp @ 1800 rpm and 1,550 ft-lb torque at 2100 rpm
Payload capacity14,199 lbs / 7 U.S. tons off-road
30,000 lbs / 15 U.S. tons payload on primary & secondary roads
TransmissionAllison HD 4070P 7-speed automatic and Oshkosh 30000 single-speed with torque proportioning differential and manual differential lock
SuspensionOshkosh TAK-4 independent suspension, coil spring upper/lower control arms; anti-roll bar on second and third axles. Front axle rated at 16,000 lb, second at 23,500 lb, third at 25,500 lb
Fuel capacity295 L (78 gal)
Operational
range
483 km (300 mi)
Maximum speed 105 km/h (65 mph)
Steering
system
Power-assisted, front axle (third axle contra-steer on MK31 tractor)

The Medium Tactical Vehicle Replacement (MTVR) is a family of medium to heavy six-wheel drive cargo and tactical trucks, used by the United States Marine Corps. The first MTVRs were delivered in late 1999. The MTVR is the equivalent of the U.S. Army's Family of Medium Tactical Vehicles (FMTV); the Marines do not use the FMTV (with the exception of the FMTV-based HIMARS) and the Army does not use the MTVR.

There were originally four, later seven, MTVR variants, then nine (plus a sub-variant) as deliveries and development continued. A dedicated trailer and prototype/developmental MTVRs have also been produced.

The MTVR was designed and is manufactured by Oshkosh Defense.