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GEAR INTERMEDIATE 23-33 TEETH
Intermediate Gear 33-23 Teeth
For Dana 18 Transfer Case with 3/4" Shaft
Replacement intermediate gear for early Dana Spicer 18 transfer case. This dual gear with 33 and 23 teeth is specific to the early version with 3/4" intermediate shaft and is stamped 18-5-1. Essential component for quiet and correct operation of the transfer case.
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Tooth count 33 teeth (large) / 23 teeth (small) |
Shaft diameter 3/4 inch (19 mm) |
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Transfer case Dana Spicer Model 18 (early-type) |
Stamp 18-5-1 |
Features
- Dual helical gear with 33 and 23 teeth
- For 3/4" intermediate shaft (early Dana 18)
- Original specification with correct tooth profiles
- Replaceable with caged roller bearings A-924
- Critical component for low/high range transmission
★ This gear is a precise reproduction to original Dana Spicer specifications. Correct tooth ratio guarantees the proper 1.97:1 low range ratio.
Application
Fits early Dana 18 transfer case with 3/4" intermediate shaft, as used in military vehicles with T-84 gearbox and dual-shifter configuration. Later replaced by 34-21 teeth (1-1/8" shaft, 1946-1953) and 39-18 teeth (1-1/4" shaft, from 1953). Note: not interchangeable between versions — always verify shaft diameter and existing tooth ratio.
Installation notes
Installation requires particular attention: use bearing assembly grease (NOT wheel bearing grease) to hold the 22 caged roller bearings A-924 in place during assembly. A wooden dummy shaft facilitates installation. Check thrust washers A-1000 and always replace them. Incorrect combination of gears causes serious mechanical damage — always verify the Spicer stamp on existing components.
Compatibility
NOT compatible with later Dana 18 versions: the 1-1/8" shaft uses a 34x21 teeth gear (642189), the 1-1/4" shaft uses 39x18 teeth (809293). Mixing different generations leads to incorrect gear ratios and severe damage. Always check shaft diameter and Spicer number on the existing mainshaft gear (27 teeth = early type with this 33-23 gear).
Historical context
The Dana Spicer 18 was the first full-production transfer case for four-wheel drive vehicles and enabled mass production of military jeeps during WWII. The early 3/4" shaft version with 33-23 teeth intermediate gear was the original design, later improved with thicker shafts for better bearing load capacity.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
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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 | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Hotchkiss M201 | 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966 |