Want to install an Engine Block Heater yourself? This guide may help.

I know this is an old posting. I have 2008 Prius and for years, I’ve been wanting to put a heater in and now that I got one I can’t seem to figure out which hole it should go into. What I got for heater was 11813 part number from Etrailers in the USA. There are 3 holes all have caps this heater is smaller than those three holes as I can’t see any other.

George

 

Well I can’t get it in seems the thick end of heater is hitting ribs of what ever it’s under there this didn’t come with grease I had thermal paste in a syringe and that wasn’t working so I put wheel bearing grease on it and still I can’t get it in. I think it’s not lined up properly but it again

 

It is see image this isn’t going to work






I just had an idea I sent the image to a friend of mine and I’m looking at the image and I’m thinking why can’t I notch the backend where the plug goes in grind it off so that it can straighten

 

On 3rd Gen the hole is nigh impossible to see. It high up in the block, just below the split line with the head, around the back, and close to drivers side corner.

I would clean off the alternate grease, get some more heat-transfer grease. Don’t apply grease till you’re sure it’s the right hole, trial install, then dab on the grease when it’s almost pulled back out. Then twist it as you’re pushing it back in, try not to scrape off the grease.
The clip on the end should positively click into a pocket, locking it out in place.

if you can find/see the hole, it’s probably the wrong one. If you can easily reach it, it’s probably the wrong hole. If there’s not a multitude of of conduits and brackets in the way, you know…

 

Mendal

This is 2nd Gen 2008 That image pointing on first Page mine has no hump where it points to where the hole is I did find hoe on the drivers side of the block