SHIELD MASTER CYLINDER ASS GPW
WOA647
Master Cylinder Heat Shield
Heat shield with insulation material
Steel protective plate mounted above the master cylinder to protect it from heat of the exhaust manifold. This part is often missing or has disappeared due to corrosion on original vehicles. Fitted with heat-resistant insulation material on the underside.
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Material Steel with heat-resistant insulation |
Part no. A647 / WOA647 |
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Vehicle Ford GPW, Willys MB, CJ-2A, M38 |
Application Master cylinder with front threaded mounting hole |
Features
- Protects the master cylinder against overheating
- Steel construction with heat-resistant material
- Original type reproduction
- Fits early master cylinder with front threaded mounting hole
- Replaces often missing or corroded original part
★ High-quality reproduction of this often missing protective part, essential for correct operation of the braking system.
Application
Ford GPW (1942-1945), Willys MB (1941-1945), Hotchkiss M201, early CJ-2A (1945-1946 up to serial number 215649) and M38 with early master cylinder type. Exclusively for master cylinders with front threaded and rear unthreaded mounting hole at 3⅛ inch centre distance.
Installation notes
Mounts with bracket and tie-bar above the master cylinder. The heat shield protects the brake fluid against overheating from the nearby exhaust manifold. Note: only suitable for early master cylinder type with front threaded mounting hole. Check before fitting that your master cylinder meets this specification.
Compatibility
NOT suitable for late CJ-2A (after serial number 215649), CJ-3A, CJ-3B or late M38 with both unthreaded mounting holes. These later models use a different type of master cylinder and require an adapted heat shield.
Historical context
The master cylinder of WWII jeeps was located directly next to the hot exhaust manifold, making a heat shield necessary to prevent boiling of the brake fluid. This part is absent on many restored vehicles.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
⚠ Spotted an error in this description? Report it to info@willys.be
This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Ford GPW (early) | 1942 |
| Ford GPW | 1942, 1943, 1944, 1945 |
📐 Diagrams & technical drawings
From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)
