Overview
The Omix-ADA 17117.01 is a thermostat gasket for the 134L L-head 4 cylinder engine used in 1942 to 1953 Willys vehicles. It fits Willys MA and MB, CJ-2 and CJ-3, FJ, Jeepster, Panel, Sedan Delivery, Truck and 1-Ton models, plus the 463 and 473.
It is a direct OE replacement built to original specifications and has a limited five year warranty.
Key features
- Direct OE replacement built to original specifications
- Thermostat gasket for the 134L L-head 4 cylinder engine
- Limited five year warranty
- Fitment spans Willys CJ, truck, panel and sedan delivery models
Before fitting an L-head gasket
A thermostat gasket on a 134L L-head engine seals the thermostat housing to the engine, so the sealing faces need to be flat and free of old material. Flathead-era housings can be pitted or warped from years of heat, and a new gasket cannot correct a distorted face. Check the mating surfaces with a straightedge before assembly.
Thermostat orientation matters as much as the gasket. Confirm the thermostat seats correctly in its bore and that the housing bolts are snug without being overtightened. Drain enough coolant to work safely, and refill slowly afterward so air does not collect around the thermostat.
- Clean old gasket residue from both faces
- Use a straightedge on the housing face
- Confirm thermostat seating before bolting up
- Refill slowly to avoid trapped air
Specifications
| Brand | Omix-ADA |
|---|---|
| Part number | 17117.01 |
| UPC | 804314009335 |
| Part type | Thermostat gasket |
| Engine | 134L L-head, 4 cylinder |
| Warranty | Limited five year warranty |
| Fit type | Direct fit |
Vehicle fitment
The manufacturer fitment list runs from 1942 to 1953 and includes Willys MA and MB (1942–1943), CJ-2 (1943–1945 and 1947–1949), CJ-3 chassis (1949–1953), FJ (1951), Jeepster (1948–1952), Panel (1947–1950), Sedan Delivery (1951–1953), Truck and 1-Ton (1947–1953), 463 (1947–1950) and 473 (1951–1952).
The list has no CJ-5, CJ-6 or Wrangler entries and nothing after 1953. Confirm your vehicle’s year, model and trim before ordering.
What’s included
Check that a single gasket covers your repair before fitting.
