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Does anyone have experience installing the engine block heater from Honda? I read the instructions and they require you to saw a hole through your front bumper... is this necessary or are there alternate install options?
 

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It looks like the part number for the Insight Engine Block Heater is 08T44-SVB-100. I saw in the installation instructions the step for front fender removal, but I didn't see mention of drilling a hole (?). It looks like just routing the cable thru the front grille will work, without tapping a new hole in the fender (attached / pg 10). - https://www.bernardiparts.com/Images/Install/2017_AccordHybrid_EngineBlockHeater_AII01462-02.pdf

The same part is listed as fitting 81 models including the 2008-2017 Accord Coupe, 2014-2019 Accord Hybrid, 2008-2019 Accord Sedan, 2006-2019 Civic Coupe, 2006-2015 Civic Hybrid, 2006-2019 Civic Sedan, 2018-2019 Clarity, 2007-2009 CR-V, and 2007-2011 Element. - https://www.hondapartsonline.net/oem-parts/honda-engine-block-heater-08t44svb100

I did a quick check on installation comments for some of the listed prior models. Most DIY-ers said removing the fender is relative 'easy' and recommended, but that accessing the drain plug is the most difficult step in the process due to approach angle/space. For people who had the dealer install the part instead, the cost ranged from $250-350.

The Honda instructions mention specific routing instructions for the cable to the grille, which will be difficult to follow if the fender is in place. If you improvise a path to avoid removing the fender, you'll want to check that the cables don't touch any hot/moving parts. There was one quick mention in the CivicX forum of installing without removing the fender. - https://www.civicx.com/threads/request-block-heater-install.20337/#post-346709
 

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It's all about cable routing from browsing the install guide. The guide is aimed to have a the finished product look as if it were added in factory. As long as you are smart about cable management, where the plug comes out is completely up to you and where you want it. The guide mentions "bundling excess" so there should be definite wiggle room as to where you want the plug to come out.
 

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The instructions you posted were for the accord. Below is a snippet from the 2019 insight installation guide. This sounds terrifying to me...

i might try to see if I can reroute it near the hood. I have no problem popping it open to access the plug. I'm just wondering if I'm getting myself into something I'll regret...
Good luck with the install! It's good to see that the instructions only mention basic tools (pushpin, drill, hacksaw) rather than specialized one like for parking sensor install. :)
 

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^Here's what it looks like on the 2018 Accord Hybrid. Doesn't look like you need to cut any holes.
 

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^Here's what it looks like on the 2018 Accord Hybrid. Doesn't look like you need to cut any holes.
I thought this too, but interestingly, the install instructions for the Accord Hybrid and the Insight are not the same. The same part is used, but the cable routing recommendations are different. @Cloaked pointed out the difference in these links:

Accord Hybrid (no drilling) - https://www.bernardiparts.com/Images/Install/2017_AccordHybrid_EngineBlockHeater_AII01462-02.pdf
Insight (drilling, pg 13- https://www.bernardiparts.com/Images/Install/2019_Insight_EngineBlockHeater_AII08599-22.pdf
 

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I still have my full grill block from winter on, warms up really quick . It was 92 today and coolant temp never went above 180 on my 8 mile commute. Measured with scanguage 2
Nice! Did you make the block yourself? Does it hurt the coolant pump to keep it on?
 

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Nice! Did you make the block yourself? Does it hurt the coolant pump to
Nice! Did you make the block yourself? Does it hurt the coolant pump to keep it on?
I made it of corrugated plastic and spray painted black. Coolant always circulates in engine block than t- stat slowly opens at 180 starting to flow through radiator than shuts under 180
 
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