Willys MB parts
1941–1943 models · 173 parts in 131 categories
Slickrock 4x4 lists 173 parts that fit the 1941–1943 Willys MB, across 131 categories. The biggest sections are 25 replacement parts; the most listed brands are Omix-Ada, Crown Automotive and Pro Comp Suspension. Pick a category below, or select your model year so every listing and product page on the site checks fitment for you.
Shop MB parts by category
Popular MB parts
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Radiator Drain Petcock
Omix-ADA Radiator Drain Cock – 17470.13
- Fits 1941–1943 Willys MB (Base) and 1946–1949 Jeep Willys CJ-2
- Radiator drain cock for 134 L-head engines, 1/8 inch size
- Omix-ADA part number 17470.13, UPC 804314173081
- Direct fit replacement with a limited five-year warranty
SKU: OAI17470.13 -
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Body Mount Kit
Omix-ADA Body Mounting Kit (Black) – 12201.01
- Omix-Ada 12201.01 black rubber body mounting kit
- Fits 1959–1975 Jeep CJ5 and CJ6 and several Willys models from 1941 to 1958
- Includes mounting bolts, nuts, washers and body mount bushings
- Spacer hole plates included; limited five year manufacturers warranty
SKU: OAI12201.01 -
Radiator Felt Kit
Omix-ADA Radiator Felt Gasket – 12021.86
- Radiator felt gasket that mounts on top of the grille shell
- Fits 1941–1943 Willys MB, 1946–1949 Willys CJ-2, 1949–1952 and 1954–1958 Willys CJ-3, and 1959 Jeep CJ3
- Keeps the hood from rubbing against the grille
- Omix-Ada part number 12021.86
SKU: OAI12021.86 -
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Axle U-Bolt, Lift Kits, Suspension & Shocks, Suspension Accessories
Omix-ADA U-Bolt Long Nut – 18204.10
Axle U-Bolt, Lift Kits, Suspension & Shocks, Suspension AccessoriesOmix-ADA U-Bolt Long Nut – 18204.10
- Long nut for Jeep U-bolts, sold as a single
- Two required per U-bolt
- Direct OE replacement built to original specifications
- Limited five year warranty
- Fits classic Jeep and Willys models from 1941 to 1971
SKU: OAI18204.10 -
Brake Hard Line And Fittings, Brake Lines & Fittings, Brakes & Steering
Omix-ADA Rear Brake Line, Stainless Steel, Stock Height of 0 in. to 2 Inch – 16733.01
Brake Hard Line And Fittings, Brake Lines & Fittings, Brakes & SteeringOmix-ADA Rear Brake Line, Stainless Steel, Stock Height of 0 in. to 2 Inch – 16733.01
- Rear brake line, 15 inch overall length
- Fits early CJ3, CJ5, CJ6 and Willys models
- Stock height, 0 to 2 inch lift
- Omix-ADA part number 16733.01
SKU: OAI16733.01 -
72-86 6 Cylinder Engine Parts, Engine Parts, Replacement Parts
Omix-ADA Piston with Pin – 17427.01
- Omix-Ada piston with pin, part number OAI17427.01
- Standard size for 134 4-cylinder engines
- Piston and pin supplied together as one part
- Manufacturer fitment list covers Jeep and Willys models, 1941 to 1971
SKU: OAI17427.01 -
72-86 6 Cylinder Engine Parts, Engine Parts, Replacement Parts
Omix-ADA Piston Ring Set – 17430.03
- Omix-Ada piston ring set, part number OAI17430.03
- For 134 4-cylinder engines, .030 oversize
- Manufacturer fitment list covers Jeep CJ, DJ, FC and Willys models, 1941 to 1971
- Made to original specifications with a 5-year warranty
SKU: OAI17430.03 -
72-86 6 Cylinder Engine Parts, Engine Parts, Replacement Parts
Omix-ADA Oil Pan Drain Plug Washer – 17438.02
72-86 6 Cylinder Engine Parts, Engine Parts, Replacement PartsOmix-ADA Oil Pan Drain Plug Washer – 17438.02
- Oil pan drain plug washer for the 134 4-cylinder engine
- Omix-Ada lists fit for Willys and Jeep models from 1941 to 1971
- Part number OAI17438.02 from Omix-Ada
- Direct-fit replacement
SKU: OAI17438.02 -
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Replacement Parts, Suspension Parts, YJ Wrangler Replacement Suspension
Omix-ADA Heavy-Duty Replacement Shock – 18203.02
Replacement Parts, Suspension Parts, YJ Wrangler Replacement SuspensionOmix-ADA Heavy-Duty Replacement Shock – 18203.02
- Omix-Ada 18203.02 replacement gas shock for the front position
- Gas charged, replacement shock series, 0 in. lift or drop
- Fits Jeep CJ and Willys models, from the 1941–1942 Willys MB to the 1981 CJ7 and Scrambler
- Limited five year warranty from Omix-Ada
SKU: OAI18203.02 -
72-86 6 Cylinder Engine Parts, Engine Parts, Replacement Parts
Omix-ADA Exhaust Valve Guide – 17416.01
72-86 6 Cylinder Engine Parts, Engine Parts, Replacement PartsOmix-ADA Exhaust Valve Guide – 17416.01
- Omix-Ada exhaust valve guide, part number 17416.01, direct OE replacement
- Fits 4 cylinder L-Head or F-Head Jeep and Willys engines
- Covers Willys MB, CJ-2, CJ-3, CJ-5 and Jeep CJ3, CJ5, DJ and FC models, 1941 to 1971
- Position: exhaust; fitment type: direct fit
- Limited five year warranty from Omix-Ada
SKU: OAI17416.01 -
Willys MB parts by year
Each year opens the full catalog filtered to parts listed for that model year.