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Main Bearing Set - Standard
Fits 41-71 Jeep & Willys with 4-134 engine

Part # A6746

New Complete Main Bearing Set in Standard

Replaces your burned out, scratched main bearings. Comes complete ready for install. Fits both flat head and overhead valve motor. Hightest quality guarantee.

4-134 engine

41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B
55-71 CJ-5
50-52 M38
52-66 M38A1
46-53 Truck
46-53 Station Wagon
48-51 Jeepster

Part # Price





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The measurements of my crankshaft are on 1.8" cranks on 2.26" bench What measurements of MAIN BEARING SET should I select? STANDARD .01" 0.2" .03".......or .08" ?

Willys Jeep Parts Tech:
Please give us a call and ask for Mike M

Do u have oversize 0.40?

Willys Jeep Parts Tech:
See part number: A6746.040

I pulled the old bearings out of my f head jeep they are marked fm then L-010 I got a set of 010 bearings installed them (correctly) they are way to tight can barely turn it over whats up help

Willys Jeep Parts Tech:
I would double check your mechanics manual to make sure your tolerances are right. You can email too for help.

Could the mains and rod bearings on the crank be reground to different sizes? I took the crank out and the mains are stamped at 0.10 and the rod bearings are stamped 0.20.

Willys Tech:
Yes, main bearing and rod bearing sizes can be different. They dont have any connection with one another.
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