Dodge WM300 Power Wagon Parts & Accessories

Dodge WM300 Power Wagon Parts & Accessories

The Dodge WM300 Power Wagon is the direct descendant of the legendary military-spec WC-series trucks, produced from 1958 through 1968 as a civilian heavy-duty four-wheel-drive workhorse with military DNA still deeply embedded in its design. Collectors, off-road builders, and vintage Mopar enthusiasts who shop for WM300 Power Wagon parts are primarily restoration specialists chasing period-correct replacement parts, serious trail builders taking advantage of the platform's proven solid Dana axles, and museum-quality restorers preserving these rare trucks for show. The WM300 Power Wagon carried forward the original Power Wagon's reputation for brute capability and simplicity, riding on a heavy-duty frame with military-spec front and rear Dana axles, a two-speed transfer case, and a front-mounted winch on many examples. The flathead 251 cubic inch straight-six was the primary engine, known for extraordinary torque at low RPM and bullet-proof longevity when properly maintained with period-correct Carter carburetor and ignition components.

Popular Upgrades

The most-sought parts for the Dodge WM300 Power Wagon include Carter carburetor rebuild kits for the 251 flathead six, Spicer 1310-series U-joints for the front and rear driveshafts, Warn hub kits for the front Dana axle, Moog steering rebuild kits, heavy-duty Deaver leaf spring replacements, and replacement Ramsey or Warn winch components for the front PTO winch. Sealed Power and Clevite engine rebuild kits covering rings, bearings, and gaskets are widely used on flathead six engines reaching high mileage or showing oil consumption issues.

Performance and Handling

The WM300 Power Wagon platform responds well to a complete front axle U-joint and steering rebuild that eliminates decades of accumulated slop in the steering geometry. Leaf spring replacement packs from Deaver or National Spring restore proper load ratings and ground clearance, and adding Bilstein heavy-duty shocks front and rear improves composure over rough trails. Buyers using the WM300 Power Wagon for trail driving should note that the factory front PTO winch requires period-correct rope or cable inspection and replacement, as original components are typically too degraded for safe use on built examples.

What is the difference between the Dodge WM300 and the original Power Wagon?

The original Dodge Power Wagon produced from 1945 to 1980 refers broadly to the civilian heavy-duty four-wheel-drive truck that started with the WDX model, while the WM300 designation specifically refers to the 1958 to 1968 military-procurement version built to Army specifications with a canvas cab and front-mounted PTO winch. Both share similar Dana axle architecture and the 251 flathead six engine, but the WM300 has specific military cab and body components that differ from the civilian Power Wagon examples produced in the same era. Parts for the WM300 should be confirmed against the military build plate specifications before ordering.

Can I rebuild the 251 flathead engine in my Dodge WM300 Power Wagon?

Yes, the 251 cubic inch flathead straight-six in the WM300 Power Wagon is fully rebuildable using Sealed Power or Clevite engine rebuild kits that include pistons, rings, rod bearings, main bearings, and head gaskets. Carter carburetor rebuild kits for the one-barrel carb are available from multiple restoration suppliers and restore proper fuel delivery and idle quality. A full engine rebuild on the 251 flathead is a well-documented restoration project with good parts availability from Mopar and vintage truck suppliers.

Why These Parts Fit Right

Parts in this collection are matched to the Dodge WM300 Power Wagon platform and its military-specification drivetrain and engine, not universal substitutes. Product pages include year and component compatibility notes to confirm fitment before ordering. Fast shipping and expert fitment support are available on every purchase.

For Dodge truck, classic Power Wagon, and Mopar restoration parts, browse Mopar Parts and Accessories, Suspension, and Exhaust.