Block Heater
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5th Wheeling
Joined: Aug 2011
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Block Heater
Going to install a block heater/cable in my 2018 F-250 6.7 diesel engine. Mine did not come with a block heater, even though I bought it here in Northern Illinois. What should I put on the threads of the block heater? I looked at the video, but there was no mention of the thread treatment used in the installation. Thanks
Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
Sure you don't just need the wire that plugs into the element on the passenger side of the block and runs out a tow hook hole? Make sure you get the loom to cover it and tie it up correctly. Its a rubber boot and just clicks on.
Logistics Pro
Joined: Nov 2004
Posts: 4,795
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More Turbo
Joined: Sep 2016
Posts: 618
Likes: 6
Per the Ford parts person my 6.7 does not have a block heater built in. They showed me the truck came less"Immersion Heater" on the parts screen
They said I needed the cord and the heater, and the installation could be quite messy since its opening a freeze plug and draining the block.
Ford 5C3Z-6B018-DA - Cord $90.28
Ford 5C3Z-6B051 - Immersion heater $37.70
They said I needed the cord and the heater, and the installation could be quite messy since its opening a freeze plug and draining the block.
Ford 5C3Z-6B018-DA - Cord $90.28
Ford 5C3Z-6B051 - Immersion heater $37.70
Logistics Pro
Joined: Nov 2004
Posts: 4,795
Likes: 47
Per the Ford parts person my 6.7 does not have a block heater built in. They showed me the truck came less"Immersion Heater" on the parts screen
They said I needed the cord and the heater, and the installation could be quite messy since its opening a freeze plug and draining the block.
Ford 5C3Z-6B018-DA - Cord $90.28
Ford 5C3Z-6B051 - Immersion heater $37.70
They said I needed the cord and the heater, and the installation could be quite messy since its opening a freeze plug and draining the block.
Ford 5C3Z-6B018-DA - Cord $90.28
Ford 5C3Z-6B051 - Immersion heater $37.70
https://www.ford-trucks.com/forums/1...r-plug-in.html
Fleet Mechanic
Joined: May 2011
Posts: 1,866
Likes: 84
From: Rainier OR
I was just looking at the Ford Body builders guide, the was a chart the showed when the block heater was needed
It said at
0 deg F not needed
-10 deg F sugested
-20 deg F. Recomended
under -20 deg F strongly recomended.
Thought it was interesting
It said at
0 deg F not needed
-10 deg F sugested
-20 deg F. Recomended
under -20 deg F strongly recomended.
Thought it was interesting
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Fleet Mechanic
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Posting Guru
Joined: Mar 2018
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your truck had the plug/cord but no element in the block? IF this is the case, its the exact opposite of what most people have - block plug installed but with no cord (that how mine came in California)
Laughing Gas
Joined: Apr 2012
Posts: 902
Likes: 51
From: Clark, WY
Since no one has actually answered your question yet....... use either RTV or teflon tape. Either will do the job just fine. (if you use the tape make sure to wrap it the right way)
If you are doing the job without draining the coolant then I say use the tape, if you are draining then either will work.
If you are doing the job without draining the coolant then I say use the tape, if you are draining then either will work.
Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
Definitely the white plumbers pipe sealant, drain the coolant, thread in and tighten, refill with same coolant. Remember there are two tanks on a diesel for coolant. I am not sure but I think you only have to drain the main. It will be a heck of a mess unless you drain, and getting it to thread in can be a pain whilst getting a bath in the orange stuff, Anyone on here able to confirm its the main tank on passenger, that drains the block and that area, vs the passenger side tank?
Senior User
Joined: Oct 2017
Posts: 158
Likes: 0
From: SE CT
This video is of a 2016 6.7L. Ive used this method and it works perfectly. Lost less than a cup of coolant. The wire for the heater is routed slightly different on the 18 but its very close. I use Permatex thread sealant.
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