cucvrus
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Just get a new one. I never had any issues with the aluminum ones. If you secure them tight in the heater box and make sure you have the area clean you are golden. Getting a heater core rebuilt is not very cost effective. My personal experience has been that the aluminum ones seem to throw more heat. But using a few tweaks in the brackets and getting the flappers sealed and operational again are the key to success. Be Safe and Keep up the good work. My Mule M1009 had a heater front and back when I first started driving it. I had 3rd row seating. I could dry clothing in the back of that M1009. The rear heater and 3rd row seat were harvested from a diesel Suburban I bought for parts. I wired a switch so the kids could control the heat from the seating area. Also isolate the steel brackets that will make contact with the heater core.Pulled the leaky heater core out. Looks to be the original so I'm going to have it rebuilt. I hear horror stories about the aluminum ones all the time. Also discovered an entire wife beater/under shirt and a pack of instant coffee in my heater box.
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