Your 1969 International M800 Post Office might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Engine Heaters product you desperately need.
We currently carry 4 Engine Heaters products to choose from for your 1969 International M800 Post Office, and our inventory prices range from as little as $24.99 up to $59.99.
On top of low prices, Advance Auto Parts offers 2 different trusted brands of Engine Heaters products for the 1969 International M800 Post Office. We only sell parts from trusted brands like Zerostart so that you can find quality parts you can count on.
Don’t take our word for it - check out customer ratings and reviews to buy with confidence. We have 2 reviews on our Engine Heaters products for the 1969 International M800 Post Office from previous customers.
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By Smitty Smithsonite
From North Brookfield, MA
Well, like the title says, the caption says ZEROSTART, but I received a KAT'S HEATERS # 11607 for a '00 4.3 out of a GMC Jimmy that I just installed in a '89 S10 Blazer. The package looked like it had been on a shelf for 15 years. The elastic band had disintegrated from age. However, it does work. 600W element ... and it heats up REAL fast out of water. I plugged it in for about 2 seconds just to make sure it was going to work, & the element got hot enough to make me let go in pain - so that's good. Installation was simple with the engine on a stand at the time. Just take a punch & knock the old freeze plug sideways, then yank out with pliers. The block heater is held in place by an arched metal strip that deforms when you tighten the allen bolt down. A rubber o-ring seals it up. I used some Amsoil off-road #2 grease around the o-ring before installation - always a good idea to lube any o-ring. Winter is coming quickly, so we should be putting it to the test in about 2 months or so. After installation I covered the cord in wire loom, & ran electrical tape around it for the entire length. You certainly don't want that cord getting frayed years down the road, & starting a fire while your sleeping! It's in a tough-to-get-to spot with the engine in place, so I'm glad I did it beforehand. Doable with engine in place, but certainly alot more work.
Bottom Line recommended
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