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24MYLR Skid Plate & Kevlar Lined Coolant Line Guards Install

the_duck17 | 2025-12-15 20:02 | 123 views

After seeing posts from others with replaced battery packs because of coolant line damage and having some close calls on the freeway on my own with objects on the road, I decided to spend a few hundred bucks to armor these two known weak points on Tesla MY/3. All in this was around $400, including extra parts you probably don't need. My insurance deductible is $1000 so this is a no-brainer for me, not to mention possible increased rates from making a claim or even getting dropped because insurance companies seem to hate Tesla owners. Parts list and comments: * HPS Model Y Skid Plate ([https://hpsperformanceproducts.com/collections/skid-plate/products/hps-black-aluminum-skid-plate-undertray-protection-shield-tesla-model-y](https://hpsperformanceproducts.com/collections/skid-plate/products/hps-black-aluminum-skid-plate-undertray-protection-shield-tesla-model-y)): I also considered the Mountain Pass but this was powder coated, they're local to me and I got it on Black Friday but both are good. * Model Y 2024 Coolant Guards ([https://www.amazon.com/dp/B0C24XXXWT](https://www.amazon.com/dp/B0C24XXXWT)): These are VERY SPECIFIC to model...if you buy some, don't spent more than $50 and make sure they fit by looking at the mounting holes. These go OVER the current plastic guard, so you're essentially doubling up on protection. You don't need to add Kevlar like I did, I had some sitting around and was just being silly. * Stainless Steel Neoprene Bonded Washer Kit (https://www.amazon.com/dp/B01MZXK9PV): Powder coated or not, eventually you'll get some kind of galvanic corrosion from the aluminum plate to either the hardware of the car itself. I replaced everything with slightly longer stainless steel bolts and used neoprene bonded stainless steel washers. Also added PTFE washers between skid plate & car...Nylon absorbs water, so avoid those because that's what both dissimilar metals need to start the galvanic corrosion process. * Frost King Sponge Rubber Foam Tape ([https://www.amazon.com/dp/B0000CBIFD](https://www.amazon.com/dp/B0000CBIFD)): slight gap between coolant guards and underbody. Mount is solid from below using bolts, top screws included look like they would pierce the coolant lines so I opted to just add weatherproof stripping I had sitting around, but shouldn't matter since there's drain holes at the bottom. I did this to keep water from getting to the kevlar, but it should be safe regardless since it's encased in resin. Overall took me maybe 3 hours to do because I was helping my nephew learn how to use my No Rinse Wash at the same time or else it probably would've gone faster.

Comments (31)
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glucoseboy 2025-12-15 20:12

Question: Image #1, am I looking toward the front of the car or the rear?

the_duck17 2025-12-15 20:14

Took that picture laying down in front of the car, pointed towards the rear. If you remove the [aeroshield](https://service.tesla.com/docs/Model3/ServiceManual/en-us/GUID-328D2912-7007-48A0-AFD6-C804B6F213BB-online-en-US.png), you'll see the same thing (MY/3).

Lontoron 2025-12-15 20:15

My local oil change shop won't take Teslas for tires/rotations's anymore because they broke the coolant line on one last year using their lift as normal. So strange Tesla left this so vulernable.

the_duck17 2025-12-15 20:21

I bought an extra rim with tire on Facebook marketplace so I can rotate my tires myself. I don't trust these shops to torque these to proper spec, which is much higher than ICE cars so I just do it myself since I have a fancy torque wrench from other hobbies.

fusiondynamics 2025-12-15 20:25

They just didn't lift it properly. There's lift points but most shops don't give a poop.

rdurty2 2025-12-15 20:37

Careful with those coolant hose guards. Lots were shipping with bolts that were too long and were touching the coolant hoses and would eventually wear through the hose. Cheap temu shit that is made to protect but has zero R&D behind it so causes the problem it’s made to avoid

NetJnkie 2025-12-15 20:56

Lots of cars have lift points just like Teslas. They aren't unique at all. Edit: Sorry y'all don't like hearing that Teslas aren't unique...or something? Downvoted for the truth..wild.

the_duck17 2025-12-15 20:57

Yup, noticed that too and decided against using the top screws, which are unnecessary. The bottom bolts go into the frame, one you reuse from the car and the second is supplied with a washer. Instead of screws I used rubber foam, but you don't even need that.

rdurty2 2025-12-15 21:08

I thought the issue was the one bolt provided with the guards where it was too long.

the_duck17 2025-12-15 21:09

You get one bolt that needed to be longer, so you'll have one OEM one that's too short you'll put away (it's the one that you use on the rocker cover assembly)...the second one you use is already on the car and is on the OEM coolant/wheel well guard plastic cover. The screws you don't use, they have sharp tips.

jwlee151 2025-12-15 21:18

I did something like this. Huge gain in peace of mind wise. But i’m not sure if Tesla will void anything because of this. Theoretically this is replacing just a cover, a plastic cover which doesn’t act like a watertight seal, so i would assume this would not void any warranty. But Tesla can say whatever they want i guess 🤷🏻‍♂️. But there is Magnuson-Moss Warranty Act to cover us.

the_duck17 2025-12-15 21:27

Should be fine since the coolant guards go over the factory plastic shielding....and if they give me grief over replacing the skid plate then I'll definitely have to sue them.

jwlee151 2025-12-15 21:29

Oh it does not replace the plastic shield but installed over it? Ground clearance will be reduced then.

the_duck17 2025-12-15 21:30

Did you see my photos? This doesn't do anything to ground clearance since the jack points are lower.

start3ch 2025-12-15 23:27

Nice! Does anyone make a guard that just protects the front of the battery/ coolant area? Could probably bolt some aluminum L channel over it for cheap

mlw72z 2025-12-16 01:52

You can rotate the tires front to back just by jacking the car high enough for both wheels to leave the ground. Did you get the extra rim to rotate sides?

7ipofmytongue 2025-12-16 05:48

A kit would be great!

the_duck17 2025-12-16 18:00

That's what I was thinking, just a simple plate in front or even better, move those to the back of the pack instead? Funny that you mention this because Tesla did retrofit some protection on the Model S after some fires, which you can read about here: https://www.greencarreports.com/news/1091366_life-with-tesla-model-s-battery-safety-shield-in-detail-photos

Medical-Display112 2025-12-16 18:07

You need to use Lift Pucks to protect against damaging the battery. Or the lift points which a Tesla tech will do "right at your house". If you go to a 3rd party and they want to jack the car, if they don't know what Lift Pucks are or refuse to use the lift points then leave.

the_duck17 2025-12-16 19:02

I [follow this guide from Tesla](https://service.tesla.com/docs/ModelY/ServiceManual/en-us/GUID-303A98A7-1F94-4CAD-883D-C84CC053289C-online-en-US.png), which has me starting at the rear passenger wheel where I put on my extra rim, then I move that up and eventually I'm back to where I started. Only takes like 30 minutes and I'm comfy in my garage...I don't like jacking more than one wheel up since I'm using a questionable Harbor Freight jack (but funnily enough, a very expensive torque wrench), so this works for me.

k1race 2025-12-18 18:04

Note to all. 22 MYP, My wife nailed a piece of steel on the freeway last year and it the right wheel well and pinched the coolant lines behind it against a pinch weld (where two sections of steel meet and are welded) and caused a leak. That repair consited in removing the entire battery pack and replacing the entire coolant lines from the front all the way to the rear and then reinstalled. This was not covered under warranty and I paid roughly $2800 for the repairs. I purchased the aluminum under guards for the front and rear and the two front sideways plates that cover the hose sections and installed them. (probably won't hit a fly now). I cut 1/3 off of that bolt as it seemd to long and I was worried that it would rub on the coolant lines.

the_duck17 2025-12-18 18:25

It's crazy that those lines run where they do and are only protected by thickened plastic, especially since there's this wheel that can accelerate projectiles to crazy speeds right in front of it. I joked with my wife that after spending all this time and money on doing this nothing will happen agian but at least we're protected if it does (or it'll be a nice value add for whoever gets this car when we do decide to sell it one day).

shaneucf 2025-12-19 11:44

It's just sad that how sloppy most labor are in the US. No one gives a shit to anything

420Deez 2025-12-20 06:23

i use that same long bolt and turned it the other way, so the threads face down. used a piece of string to fish it through the hole.

420Deez 2025-12-20 06:25

u could’ve flipped the bolt over so the threads face down, use a string attached to the threads to fish it through.

hmspain 2025-12-20 06:54

This is what mine looked like after getting stuck in the mud! Dr. Detail dropped the plate for a complete clean. I'm glad the protection was there when I got stuck! [https://imgur.com/a/wPZx4Dw](https://imgur.com/a/wPZx4Dw)

the_duck17 2025-12-20 17:36

Holy crap, that's naaasty but looks like it's still good! I saw someone just hit a little water and it absolutely destroyed the OEM skid plate...it gets floody out here a lot, usually because the homeless jam up the storm drains.

MonsieurBon 2025-12-20 18:30

Yeah I helped a tow guy jack up my MY last week so he could fit dollies under it. He was gonna jack anywhere and I had to make sure he hit the lift points exactly.

bioton4 2025-12-22 23:13

lol i got the side shields and uninstalled them right after installing them becuase i noticed they were touching the lines. ive been meaning to get studs or shorter screws but have been putting it off.

k1race 2025-12-29 05:52

Just cut the bolts and reinstall them.

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