Transmission Main Shaft Spacer
Fits 46-71 Jeep & Willys with T-90 Transmission

Part # 643621

New Transmission Main Shaft Spacer (1 required per vehicle)

Ensure proper spacing for your transmission output shaft. Required for assembly.

Application:
T-90 Transmission

Fits:
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

Product Pricing Table
Part # Price
643621

$17.99

MSRP: $17.99

$17.99

MSRP: $17.99

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I see several people asked already... what is the thickness of this shim?

Willys Jeep Parts Tech:
Its about .281 inches thick

do you have shims for this as well?

Willys Jeep Parts Tech:
They didn't originally use a shim there.

I'm afraid I did was not specific on my previous question on thickness of the spacer. Thanks for the ID and OD diameter thats helpful but I need the actual thickness as I am dealing with a custom application between transmission and overdrive. Thanks... Jim.

Willys Jeep Parts Tech:
ID 1.375 OD 1.740 THICK .75

What is the thickness in thouands is this spacer? Also is it the same for the t86? Thanks.

Willys Jeep Parts Tech:
ID 1.380 OD 1.740

Is this spacer included in the T90K overhaul kit?

Willys Tech:
Yes they come in the small parts kit.