I’ve beat the search function to death
i have a 1971 Oldsmobile Cutlass S
455.
water pump outlet 2 inch
radiator 3 core with 1.75

i got the gates 20603. It has the wrong size ends but the right shape hose
then got the gates 20601 it has the RIGHT ends but wrong shape.

looking for info on the correct lower hose.
Any help much appreciated

 

There are hose sleeves to help with this issue. Napa and others have sleeve adapters...Ask me how I know....

 

Someone has to sell the correct hose




QUOTE=therobski;1451934]There are hose sleeves to help with this issue. Napa and others have sleeve adapters...Ask me how I know....[/QUOTE]

 

It appears you have a 1970 cooling system setup on your '71 - I have similar on my car.

The 1971-newer engines have a 1.5" radiator outlet and 1.75" water pump inlet.
The 1970-older engines have a 1.75" radiator outlet and 2" water pump inlet.

So I would have thought the 20601 hose would work. I've never had any problems with lower hose fitment on my car.

 

[/QUOTE]
Whatever just trying to help....

 

 

Here’s what I got 603 on left. The one I need in middle. 601 on right

 

*** Fusicks ***

Yup, you’ll pay a little more but I’ve found the repro hoses fit a lot better than parts store versions.

​​​​​​….

 

Maybe you can trim the 601 to fit? That may be what I did in the past. It looks as if the lower end is trimmed a bit that it would match the middle one.

 

^^^THIS! The water pump is not correct, thus the hose problem. Also note that a lot of replacement radiator vendors sell the small outlet radiators for all applications to cut the size of their inventory and cost, forcing you to use the bushing for some applications.

 

X2 on that Joe.I have used the rubber sleeves from Napa on a few builds, notta issue..