you're right. half my hoses are aftermarket and that is one of them. i plan to order the oem hose tomorrow. thanks for your help!Your hose looks like it may be aftermarket. If so, it might require some trimming. An OEM hose won't require any trimming, but some aftermarket hoses do. I'm going through an entire cooling system replacement on my 79 right now. I used OEM for the top radiator hose and bypass hose but used Gates for the two large bottom hoses. I had to trim quite a bit of length off the water pump end (like about 3 inches or so) and a small amount (like 1/2 inch or so) off of the coupling (lower) end. It all fits great now. Good luck.