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Water Pump Bypass Hose
Fits 41-71 Jeep & Willys with 4-134 engine

Part # 649719

Water Pump Bypass Hose

This bypass hose installs from the water pump to the cylinder head.

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
46-53 Truck
46-53 Station Wagon
48-51 Jeepster

Will fit some L-heads with cylinders heads that have the port on the front but will not work for the head that does not have a port in the front.

Part # Price





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Hi. I have a CJ3B (F head) with a by-pass on the water pump. Which water pump do I order? Thanks for your help. cheers

Willys Jeep Parts Tech:

I have a 1962 CJ5 w/F head. I removed the heater core and am not re-installing it. Do I need to connect a hose from the water pump to the cylinder head port on the rear of the engine? I think this hose is not right for my situation.

Willys Jeep Parts Tech:
If you are not using it, then you can just plug it off.

Is this used on the F-134 Engine? It says ''BYPASS'', is it needed if Im using a heater? Thanks

Willys Jeep Parts Tech:
Yes, it is used on the F head engine.

What is the ID of this hose??

Willys Jeep Parts Tech:
1/2 inch

what deal can I get if I ordered 10 green shirts and 10 kakki hats is there anything you can do to reduce the total costs?

Willys Jeep Parts Tech:
Sure. Please call us toll free and we can take a discount for you. Thanks! Ask for Mike M.

will this fit the L134 1951 M38?

Willys Jeep Parts Tech:
Yes, that is correct.
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