Based on the MK27 and fitted with a rear-mounted Hiab materials handling crane rated at 10,000 lb at 10.5 ft maximum reach, the MK37 is a resupply vehicle for the U.S. Marines HIgh Mobility Artillery Rocket System (HIMARS).

This award initially covered only potential Foreign Military Sales (FMS), plus the continuing requirements of the U.S. Navy.

[1] In 2005, the MK31 Medium Equipment Transporter (MET) tractor entered service with Seabees, and later in the year with the Marines.

The MK28C (C - chassis) replaced Special Purpose Vehicle (SPV) types, these based on a mix of tactical and commercial truck chassis and including: water distributor, 2,000 US gallon; fuel, 1,500 US gallon; field service; asphalt distributor; earth auger.

[1] Also in 2005, Oshkosh was awarded a contract to re-manufacture an initial 27 MTVRs to new configuration and with a full new vehicle warranty.

[1] All production versions of the MTVR are based on the same 6×6 drive configuration[11] and utilize a chassis constructed using bolted / Huck-bolted, formed channel (9.75 × 3 × 0.38 in) made of heat-treated carbon manganese steel with a yield strength of 110,000 psi minimum.

[11] When the central tire inflation system (CTIS) is set at 0 to 2 tons payload, engine power output is automatically reduced by around 20%.

[1] Driveline is completed by an Allison HD 4070P seven-speed automatic transmission, TC-541 torque converter and an Oshkosh 30000 Series single-speed transfer case.

Standard tires fitted to the MTVR are Michelin 1600 R20 XZL and with the exception of the MK36 wrecker variant, no spare is carried.

CTIS allows the driver to adjust tire pressures to suit both payload and terrain conditions, from the driving seat.

The two-piece bolt-together steel wheel rims are fitted with beadlocks for extreme low-pressure operations and tires will remain seated at pressures down to 10 psi.

In the event that any one tire should fail totally, a limp-home facility allows for a second axle suspension unit to be raised and secured.

[9][14] Development of a protection kit for the MTVR commenced in 2003, with the first production contract awarded in 2004 and calling for 920 baseline appliqué APKs for the cab, plus 460 modular armored rear troop carrier compartments.

Oshkosh announced in August 2008 an initial contract award for height reducible armor kits for MVTRs.

[9][14] A small arms fire and mine blast protection kit for the U.K. MoD's MTVR-fronted Wheeled Tanker fleet has been developed and fitted to vehicles used on overseas operations.