Exhaust System & Parts for Ford GPW

Exhaust System & Components for Ford GPW: Down Pipes, Manifolds, Gaskets & More.

Ensure optimal exhaust velocity and absolute wartime authenticity for your flathead engine. We offer a highly specialized range of parts for the Ford GPW exhaust tract – from authentic replacement downpipes to precision manifold heat riser rebuild kits.
  • Exhaust Flow: Heavy-duty replacement Omix exhaust manifolds and period-correct downpipes by MD Juan.
  • Thermostatic Function: Heat riser bimetallic springs and complete manifold valve repair kits by Omix.
  • Sealing Technology: High-temperature 3-piece manifold gasket sets and downpipe packing seals by Crown.
Ford GPW 1941-1945 exhaust parts exploded drawing with number labled spares highlighted

Exhaust Head Pipe Jeep Willys MB Ford GPW 4-134 L-Head 41-45
Exhaust Manifold to Muffler Pipe pipe with flex piece
149,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Crown Exhaust Manifold Gasket Set 3-Piece 4-134 L-Head Jeep CJ2A CJ3A / Willys MB M38 / Ford GPW 4-134 L-Head (1941-1953)
NEW
3-piece complete set of manifold gaskets for intake and exhaust manifold
8,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Exhaust Manifold Heat Riser Repair Kit L-Head Jeep Willys 42-53
Only suitable for the 4-134 L-Head Go-Devil engine
34,90 EUR
incl. 19% tax excl. Shipping costs
Exhaust Manifold Heat Riser Spring L-Head Jeep Willys 41-53
12,90 EUR
incl. 19% tax excl. Shipping costs
Exhaust Manifold L-Head Ford GPW Jeep Willys CJ 41-53
Exhaust Manifold L-Head
199,00 EUR
incl. 19% tax excl. Shipping costs
Exhaust Mounting Kit Jeep Willys MB Ford GPW 4-134 L-Head 41-45
Only suitable for 4-134 L-Head "Go Devil" engine
57,90 EUR
incl. 19% tax excl. Shipping costs
Set:
 
Exhaust to Manifold Gasket Jeep CJ + Willys 41-71 4-134cui
Exhaust Flange to Manifold Gasket 
7,90 EUR
incl. 19% tax excl. Shipping costs
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Wartime Exhaust Flow and Climate Control: Premium Exhaust Solutions for Your Ford GPW.

The exhaust configuration of the 1941–1945 Ford GPW military Jeep features a highly distinct vintage layout necessitated by the side-valve engine design. Because the intake and exhaust manifolds are stacked closely together on the Go-Devil flathead block, a mechanical heat riser valve is utilized to divert exhaust gases and pre-heat the fuel mixture during cold starts. Over decades of storage, extreme thermal cycling, or high moisture, cast iron manifolds inevitably crack, flanges warp, and the internal counterweight valve or thermostatic coil springs seize tight. This causes improper fuel vaporization and engine hesitation. Our specialized online inventory features highly precise replacement hardware to successfully rebuild your mechanical exhaust path back to original standards.


Authentic Quality Engineering for Historic Restorations: MD Juan, Omix & Crown.

For high-end chassis assemblies, we strictly rely on the historical replication standards of the heavy-gauge steel exhaust downpipe from MD Juan. Replace your pitted or cracked factory exhaust casting with a fresh, durable exhaust manifold from Omix. To fully restore your engine's original thermal performance, explore our specialized update hardware: we stock the exact manifold bimetallic thermostat spring alongside the comprehensive manifold heat riser valve repair kit from Omix to make your internal counterweight assembly rotate freely once again.
We guarantee an airtight, blowout-free barrier at high trail temperatures with professional-grade sealing components from Crown Automotive, including the factory-spec 3-piece manifold gasket set and the vital high-temperature exhaust downpipe-to-manifold packing seal to stop hazardous leaks inside your engine bay permanently.


Expert Support for Your Historic Ford GPW Exhaust Overhaul.

Freeing up seized vintage flap valves and clamping heavy casting components without warping structural block faces requires absolute accuracy and mechanical knowledge. Our outstanding customer service is here to guide you through selecting the correct manifold bolt sets, lock washers, and seals tailored to your specific wartime production year. With our fast shipping, your replacement exhaust parts will arrive quickly, keeping your classic Ford GPW running strong and convoy-ready.