Motorcraft KH 451 HVAC Heater Assembly Review

Genuine Motorcraft part at 1/2 dealer price. Both hoses changed in 40 minutes, you'll curse the Henry Ford name if you try to loosen old hose fittings, especially the little extension hose on the bulkhead. I was able to use a flathead screwdriver to pry off the black plastic that the white clip is attached to and then pry them out.

This hose was just what I needed for my 2008 Ford Expedition (just under 100,000 miles). I replaced this HVAC hose by replacing another one that was leaking coolant throughout my engine bay (KH-509 had a leak) while I was there as I figured if the other one failed this one probably wouldn't go any further behind. This hose was half the price of one of the local shops and got here in 2 days. Other posts I found said that a special connector was needed to remove the old hose, but I was able to…

Okay, you need 1 tool, a flathead screwdriver, to remove the hose clamp. Insert each section of hose into the metal tube with clamps, twisting back and forth several times to loosen the inner clamp retainers. Press the outer tabs against the metal tube with your thumb and forefinger while leaving the hose inserted in the metal tube. Then pull the hose off with your other hand. I did the same with another hose. Motorcraft KH-451 HVAC heater hose assembly. I removed and installed both hoses in…