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Transmission Reverse Idler Gear
Fits 46-71 Jeep & Willys with T-90 Transmission

Part # 640417

New Transmission Reverse Idler Gear (1 required per vehicle)

The gear has a tooth count of 15.

Included inner bushing already pressed in place.

T-90 Transmission

46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B
55-71 CJ-5
50-52 M38
52-66 M38A1
46-64 Truck
46-64 Station Wagon

Part # Price





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Just counted teeth on my R I gear. Mine has 16 teeth as well. Is a 16 tooth gear available, or can I order a bushing. The old gear is OK..

Willys Jeep Parts Tech:
The T84 has a 16 tooth reverse idler gear. Are you working on a T90 or a T84?

My R I gear has a tooth count of 16. Are they available?

Willys Jeep Parts Tech:
Email some more vehicle information and we can help.

Can I get just the bushing for the Reverse Idler gear. If so what is the Part No. Thanks !

Willys Jeep Parts Tech:
Sorry, we can only get the bushing with the gear. They come together.

How many teeth? Mine has 15 teeth How much for shipping (international , Canada) my zip code is J0K-3K0 thank!

Willys Jeep Parts Tech:
This gear does have 16 teeth. For a shipping quote please call us toll free at 888.648.4923 or email us at Thanks

Does the reverse idler gear come with a bushing installed? If it does, is it reamed to the correct size for the reverse idler shaft?

Willys Jeep Parts Tech:
Yes, it will have the correct bushing in it.
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