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Replacement Connecting Rod #1-3
Fits 46-71 Jeep & Willys with 4-134 engine (Out of Stock)

Part # 641774

Replacement Connecting Rod #1-3 (2 required per vehicle)

New connecting rod for both flat head and overhead valve gear driven motors. For #1 or #3 pistons ensures proper oil port hole.

4-134 engine

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

These are a rough cast connecting rods with some pitting on the machine surface and may required additonal machining.

Part # Price





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Why are these and the 641775 connecting rods not compatible for use with the 41-46 models with the same engine as described in your chart?

Willys Jeep Parts Tech:
They used a different size rod bolt is the primary difference between the two.

Where are the connecting rods for the 134 engine made?

Willys Jeep Parts Tech:
Right now we recommend good used on these. Please email to help.

Whay I can not put this item in basket. Do you need me to call and make phone order. Miroslav

Willys Jeep Parts Tech:
Please email and we can help out.

When I pulled my F engine apart, all the oil ports on the connecting rods were facing in the same direction the difference being the lock bolt for the piston pins were facing in different directions. Which way is correct? Also all the vertical slits in the pistons were all in the same direction. (to the right looking at the front of the engine). Is that correct? Thank You.

Willys Jeep Parts Tech:
Email and i can help with. I'll scan in some pages out of book too to help as well and email them to you.

How can you tell which rods are 1 and 3 or 2 and 4 on a set of original rods?

Willys Jeep Parts Tech:
The easiest way to tell is by looking at the position of the oil port plug. They are in the opposite positions for the 1,3 then the 2,4. Thanks

What is the length of a 134 4cyl Jeep connecting rod?

Willys Jeep Parts Tech:
11-3/8" overall approx.

Do I need to replace all four for a rebuild or can I just replace the ones that are bad?

Willys Tech:
I always recomment relacing them in sets for balance.
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