Crankshaft Pulley Nut
Fits 41-71 Jeep & Willys with 4-134 engine

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Crankshaft Pulley Nut
Fits 41-71 Jeep & Willys with 4-134 engine
New Crankshaft Pulley Retaining Nut

Proper style nut to hold your crankshaft pulley in place and tight. Fits both flat head and overhead valve motor.

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
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Availability: In stock

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Questions: I have an M38A1 with a 4-134F continental engine, it lost the nut of the crankshaft pulley and I would like to know the number of threads of the thread, I understand that the diameter is 1 ". Thank you very much.
Question By: CARLOS AQUILES VALERO KERCH on Feb 22 2021 4:29 AM
1"-16 I do believe.
Answer By: Willys Jeep Parts Tech on Feb 22 2021 5:42 AM
Questions: need to chase the threads on the crank , can you tell me size and thread pitch thank you
Question By: Jim Gifford on Feb 10 2021 2:18 AM
These should be a 1"-16 thread.
Answer By: Willys Jeep Parts Tech on Feb 10 2021 8:26 AM
Questions: Were there two different threads sizes on the crank shaft? I have two different ones and they appear to have different threads?
Question By: Bob Orr on Mar 31 2019 9:36 PM
No, they used the same crankshaft pulley nut on all 4-134 crankshafts.
Answer By: Willys Jeep Parts Tech on Apr 1 2019 5:39 AM
Questions: What are the inside threads of the nut metric or standard?
Question By: Bobbie on Sep 26 2017 5:58 PM
This is standard like original for your Willys Jeep.
Answer By: Willys Jeep Parts Tech on Sep 27 2017 6:11 AM
Questions: how to remove the crankshaft pulley retaining nut on my cj2a l134 engine. Is there a nut breaker tool any where that will fit over that 1 3/8 nut. I have been working for weeks to break this loose.. thank you, ED
Question By: ed on Oct 27 2014 12:00 AM
I would use some liquid wrench and alittle heat. Obviously make sure the engine isn't turning over.
Answer By: Willys Tech on Oct 28 2014 12:00 AM
Questions: Is this nut right hand threaded or left? The nut on my 134-f head won't budge. Any tricks?
Question By: Anonymous on Nov 10 2013 12:00 AM
It is standard right hand thread like original.
Answer By: Willys Tech on Nov 11 2013 12:00 AM
If the motor is still in the vehicle, Use the starter. Put the socket on a long breaker bar, wedge & tie it to a cross member or frame member, and bump the starter.
Answer By: David McHugh on Feb 25 2018 9:18 PM
Questions: Does this nut work with the manual starter handle?
Question By: Laffers on Aug 21 2013 12:00 AM
These do not use the manual starter handle.
Answer By: Willys Tech on Aug 22 2013 12:00 AM
Questions: What's the torque wrench specs for when tightening down this nut on the crankshaft for a 1942 Ford GPW with a L134 Flathead engine? thx!
Question By: Douglas on Mar 30 2013 12:00 AM
The book doesnt give a torque spec. It just says tighten with key in place.
Answer By: Willys Tech on Apr 1 2013 12:00 AM