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Old 10-20-2000, 06:59 AM   #1
Scooby Newbie
Member#: 857
Join Date: Feb 2000
Question Block Heater

Has anyone installed a block heater in their RS? Do you have any helpful tips?

Besides the drain plug on the radiator, is there also a drain plug on the engine block?
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Old 10-20-2000, 07:12 AM   #2
Scooby Specialist
Member#: 1669
Join Date: Jun 2000
Location: Cleveland, Ohio
2004 WRX Sport Wagon


um aren't block heaters only really needed on diesel motors?
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Old 10-20-2000, 06:15 PM   #3
Techno Sapien
Member#: 449
Join Date: Oct 1999
Chapter/Region: MWSOC
Location: Lawrence, KS
2016 BRZ Limited
Ice Silver Metallic


We have the block heater on our Outback. In order to install it you have to remove the coolant plug in the engine block. First you'll have to drain the coolant obviously The plug unscrews using a very big allen wrench (14MM? I forget) Then you screw in the heating element. If you want to get an idea of what the plug looks like check out this page: http://www.azscooby.com/

And look for the OEM subaru oil cooler. I had to remove the same plug but on the opposte side to install that. I now have the proper allen wrench so it would have been a lot easier with that.

We don't live in a real cold climate so we have never used the one on the outback it came standard on the Limited.
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Old 10-21-2000, 09:04 AM   #4
Scooby Newbie
Member#: 323
Join Date: Sep 1999
Location: Winnipeg, Manitoba, Canada
1999 Impreza RS
Rally Blue


Block heaters are a way of life up here in Canada. I designed them for a living for 3 years, including the OEM heater for Subaru
If you are having trouble finding a 14mm allan key, or any big one for that matter, just take a bolt with a 14mm head on it, put two nuts on it, jam them together, and use a wrench on the bottom nut. That will work most of the time.
If the nuts keep slipping, take your little assembly to anyone that has a welder and get the nut welded on.
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