The High-Mobility Multipurpose Wheeled Vehicle, or HMMWV, has a legacy forged in military service, yet few examples command attention quite like this meticulously customized 1987 AM General M998 HMMWV. This isn’t just a military surplus machine. It is a stunning, SEMA-displayed spectacle. Acquired in 2021, the truck was completely rebuilt for the 2022 SEMA show in a powerful collaboration with the specialists at Plan B Trucks. The result is a tactical icon re-engineered for the modern enthusiast. It truly captures the spirit of rugged capability.
A Professional SEMA Show Build
The sheer scope of the build is immediately obvious. Plan B Trucks handled key aspects of the AM General M998 HMMWV transformation. They fitted a distinctive slant back and a hardtop to drastically alter the profile. The truck was subsequently refinished in a tough, gray-tinted textured paint. New components abound outside and in. A robust brush guard and a practical roof rack were added. The custom front and rear bumpers integrate seamlessly with the truck’s aggressive stance.
Exterior Enhancements and Detail
Attention to detail defines this build. A functional snorkel and new side mirrors were installed. The exterior also features a Warn winch, which adds practical utility to the front. Visibility is greatly improved by modern LED headlights. PHR hood lift hooks provide easy engine access. Pelican cargo cases complete the overland look and offer secure storage. The windshield was also replaced during the comprehensive process. Aftermarket window tinting provides privacy and a cohesive, aggressive aesthetic.
Suspension and Aggressive Stance
The truck’s formidable road presence comes from its elevated stance and wheel package. The vehicle’s four-wheel independent suspension system remains, enhanced with key modifications. Radflo shocks were installed at all four corners for superior damping. Furthermore, a three-inch body lift was carried out. These changes not only lift the truck but also improve articulation. The modifications ensure exceptional capability over challenging terrain.
Off-Road Wheel and Tire Setup
The setup is dominated by 17-inch Vorsteiner Offroad wheels. These strong wheels wear PHR hub covers. They are wrapped in massive Gladiator X Comp M/T tires. The aggressive tread pattern tires measure 40×13.50 inches. A matching spare tire is mounted to the sturdy rear carrier. During the build, the front brake rotors and pads were replaced. New axle seals were also installed to maintain driveline integrity. An Energy Suspension sway bar bushing kit was fitted for improved handling. The addition of a power steering cooler helps manage heat off-road.
Modern Comfort Meets Military Form
The Spartan military interior was completely overhauled for this project. Dynamat sound deadening material was meticulously applied throughout the cabin. This includes the floors, roof, and doors, making a huge difference in comfort. Four Corbeau Moab bucket seats are upholstered in black vinyl. This seating choice dramatically improves occupant support. The dash and center console received a complete custom replacement.
Technology and Driver Interface
A Cerakote-coated camo-style dash and center console from Plan B were installed. This unique finish adds a custom, tactical feel to the cockpit. The driver interacts with a stylish MOMO steering wheel. A modern SwitchPro panel manages all auxiliary power. An Ecoxgear sound bar and subwoofer provide a premium audio experience. Essential functions are monitored by new aftermarket instrumentation. This includes gauges for speed, rpm, oil pressure, and voltage. A push-button start system replaces the original setup.
The Diesel Powerplant
The heart of this AM General M998 HMMWV remains its reliable 6.2-liter diesel V8 engine. This engine is positioned beneath a front-hinged clamshell hood. The rebuild included a significant amount of preventative and performance maintenance. The entire cooling stack was refreshed. This process involved replacing the radiator, thermostat, and hoses. All fluids were naturally swapped as well.
Engine Specifications and Performance
Power output for the 6.2-liter diesel V8 is sent through a three-speed automatic transmission. From there, it moves to a dual-range transfer case and portal axles. A PHR intake and an oil cooler were fitted during the modification process. The engine now breathes through a performance Magnaflow exhaust system. An essential 100-amp 24-to-12-volt step-down converter was installed. The batteries were replaced in late 2025 ensuring reliable starts. This reliable diesel AM General M998 HMMWV powertrain offers significant torque for tackling trails. A transmission cooler was installed to maintain reliability. The transmission filter and gasket were also replaced during this work.
A New Chapter for the HMMWV
This 1987 AM General M998 HMMWV represents a blend of military function and modern show-car flair. The SEMA build by Plan B Trucks successfully transformed the vehicle. It now boasts a custom interior and aggressive styling. The truck sits ready with its comprehensive list of upgrades. This is an expertly modified and truly unique vehicle. It carries a clean California title and is available on dealer consignment.
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Source: bringatrailer.com
