Cooling System & Parts for Willys MB

Cooling System Components & Hardware for Willys MB: Water Pumps, Hoses, Gaskets & More.

Protect your classic Go-Devil engine from overheating during convoy runs and historic displays. We offer a comprehensive catalog for the Willys MB cooling circuit – from reliable mechanical water pumps to factory-correct sheet metal kits by MD Juan.
  • Coolant Flow: Heavy-duty mechanical water pumps including high-durability backing seals by Crown.
  • Airflow & Expansion: fan shrouds and coolant expansion tank kits by MD Juan.
  • Thermal Control: Factory-style thermostat housings and matching housing gaskets by Omix.
  • Hose Routings: Pre-formed, durable replacement coolant hoses engineered by Omix.

Lower Radiator Hose for 2,2 L L-Head Go Devil Engine. Jeep CJ / Willys MB / M38 / M38A1 / Ford GPW  (1941-1952).
Only fits for 2.2L 4-134 L-Head Go Devil Engine.
27,90 EUR
incl. 19% tax excl. Shipping costs
Radiator Overflow Bottle Set Ford GPW Jeep Willys MB 4-134 L-Head 41-45
SOLD OUT
Surge Tank Assembly
229,90 EUR
incl. 19% tax excl. Shipping costs
Radiator Shroud Jeep Willys MB CJ2A 42-49
Radiator Shroud 4-134 L-Head Engine
79,90 EUR
incl. 19% tax excl. Shipping costs
Thermostat Housing Gasket for 2.2L Go Devil L-Head engine. Jeep CJ / Willys MB / M38 / M38A1 / Ford GPW (1941-1953).
Only fits for 2.2L 4-134 L-Head Go Devil Engine.
2,50 EUR
incl. 19% tax excl. Shipping costs
Thermostat Housing for 2.2L L-Head Go Devil engine. Jeep CJ / Willys MB / M38 / M38A1 / Ford GPW (1941-1953).
Only fits 2.2L 4-134 L-Head Go Devil Engine.
43,90 EUR
incl. 19% tax excl. Shipping costs
Water Pump Gasket Jeep CJ + Willys 41-71 with 4-134 cui
SOLD OUT
3,90 EUR
incl. 19% tax excl. Shipping costs
Water Pump Jeep CJ + Willys 41-71 with 4-134 cui
Water Pump incl. Gasket with Single Pulley
139,90 EUR
incl. 19% tax excl. Shipping costs
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Preserving Wartime Thermal Efficiency: Premium Cooling Solutions for Your WWII Willys MB.

The factory cooling layout of the 1941–1945 Willys MB military Jeep is vital to keep the iconic 134 Cui side-valve engine („Go-Devil“) running at optimal operating temperatures. When operating your vintage 4x4 at slow crawling speeds or idling during historical convoy shows, proper heat exchange is heavily dependent on a flawless mechanical circuit. A weak water pump impeller, a heavily pitted thermostat housing, or dry-rotted rubber hoses can quickly cause localized hot spots and compromise your flathead block. Our specialized online inventory features highly precise replacement components engineered to strict wartime standards.


Authentic and Proven Cooling Capacity: MD Juan, Crown & Omix.

For high-end engine bay restorations, we strictly rely on the historical sheet metal standards of MD Juan. We stock official reproduction MD Juan fan shrouds to focus your blade airflow perfectly through the radiator core, alongside period-correct coolant overflow expansion tank kits.
Restore your engine's internal coolant circulation with replacement mechanical water pumps from Crown Automotive, packed complete with heavy-duty mounting seals. Keep your block's cooling transitions tightly sealed with factory-style thermostat housings from Omix and exact-fit thermostat housing gaskets. Our range is finalized by heavy-wall coolant hoses from Omix, engineered to handle cooling system pressures seamlessly while maintaining that classic vintage look underneath your hood.


Expert Support for Your Historic Willys MB Cooling Overhaul.

Overhauling a vintage L-head cooling circuit requires absolute precision regarding fluid chemical compatibility to avoid damaging historical cast-iron blocks and solder materials. Our outstanding customer service is here to guide you through selecting the correct thermostat setups and hose routings tailored to your specific wartime production year. With our fast shipping, your replacement cooling parts will arrive quickly, keeping your classic Willys MB running strong and convoy-ready.