How to Change Cabin Air Filter and Engine Air Filter for 2020 Subaru Outback

Here are pic­tures doc­u­ment­ing the change/replacement of the cab­in and engine air fil­ters of my 2020 Sub­aru Out­back Onyx XT.

Project dura­tion: 10 min­utes under good con­di­tions

Tools need­ed: Hands, maybe a flash­light.

Cab­in Air Fil­ter

Open your glove com­part­ment.

There’s a tab on the right hand side when you open it. Just tug on it high­er up and it comes right off.

On either side of the glove box, are hinges as shown in the upper pic­ture. Push hard on either side to pop them out. It might be hard to do if your car is new­er or when it’s cold. Mine qual­i­fied under both con­di­tions and I had a heck of a time.

Aaaand, it final­ly came out!

Here’s a close­up of one of those hinges. Sub­aru gave it extra felt. Kin­da nice.

And here you have the cab­in air fil­ter box.

I could­n’t fig­ure out how to remove this piece and man­aged to break off one of the clasps on the side of the cab­in air fil­ter box like an idiot. 🙁 All you have to do is squeeze those two things on the bot­tom at the same time and it comes right off.

Here’s the old one.

I don’t think the fil­ter has been changed since I first bought the car Nov of 2019, so it’s been over a year (it is mid-Feb 2021 right now). That’s a gen­uine Sub­aru cab­in air fil­ter.

This is the new fil­ter installed. **N.B. From var­i­ous online videos, I hear that Sub­aru’s air flow is from top to down, but Sub­aru is appar­ent­ly one of the few (if not the only) car man­u­fac­tur­ers for which the OEM cab­in air fil­ter arrow does­n’t cor­re­spond with air flow direc­tion. If you’re using after­mar­ket, then make sure you fol­low the air flow.**

OK, then you just put it back togeth­er. Cov­er on the fil­ter box, line up the bot­tom hinges of the glove box and sim­ply push up until it snaps in, then make sure you replace the lit­tle clasp on the right side and BOOM, you’re done!

Engine Air Fil­ter

Open the hood

On the left side of the engine bay, find this and unhook the met­al clasps.

If you wig­gle it apart, you’ll see the old engine air fil­ter.

Just pull it out.

I used a gen­uine Sub­aru engine air fil­ter. The new one is on the left and the old one on the right.

You just slide it in there, foam-side fac­ing the back of the car, close up the clasps, and you’re done!

Yay!

DIY: Rally Armor mudflaps 2020 Outback Onyx XT installation

I was super stoked when Ral­ly Armor final­ly released mud­flaps for the 2020 Out­back!! I’d been wait­ing since I bought the car in Novem­ber 2019. Rokblokz had them weeks before Ral­ly Armor, but I the RAs looked so much nicer. As soon as they became avail­able, I bought them and BOOM, in 3 days they had arrived. Here, I doc­u­ment my install of the Ral­ly Armor UR mud­flaps for the 2020 Sub­aru Out­back Onyx XT. *Please note that I am by no means any sort of expert about cars or how to repair or alter them. I’m just an aver­age car own­er and like the way they look.*

Writ­ten: 02/29/2020

Rally Armor UR

Front Mud-flaps

sketch-15830162891136719658406376173580.png
Turn the wheel towards the direc­tion you’re work­ing on to free space

20200229_102123_hdr6149193197956072934.jpg
My car came with the OEM mud guards, so that was­n’t cov­ered under the Ral­ly Armor instruc­tions. I assume with­out the guards, there would be clips instead of screws secur­ing the lin­er and trim

20200229_102138_hdr701447632201929213.jpg

Under­side of the OEM guard. Remove the screw to remove the guard. I used a screw­driv­er for this

20200229_1027396802115216054363066.jpg
Ini­tial­ly used a screw­driv­er, but found a ratch­et­ing wrench much eas­i­er. A ratch­et­ing sock­et would be even bet­ter

20200229_102857_hdr3882842613002802462.jpg
Righty-tighty, lefty-loosey

20200229_1029365314456168619789323.jpg
The inner­most screw was too deep for my non-sock­et wrench, so I used the reg­u­lar side

20200229_103215_hdr2946933064794358825.jpg
And off comes the guard

20200229_103230_hdr7673401825639132779.jpg
There’s one clip left to remove

20200229_103321_hdr5954110108263904908.jpg
Small flat­head to pop the thing out

20200229_103318_hdr2028768666263726405.jpg

20200229_103328_hdr1544086505145925230.jpg
And remove

20200229_103406_hdr3655202307031454877.jpg
Pull back the lin­er (some­how a bunch of leaves got into mine)

20200229_103706_hdr4410374474730480426.jpg
Because mine had the OEM guards, there are already poly­gon clips (?) where the screws thread­ed. Remove all 3 (2 out­er­most and one on the inner towards the mid­dle of the car)

20200229_1035221504543977950770653.jpg
Clips that came with Ral­ly Armor

20200229_1037513672006180901792444.jpg
Side by side of the ones for the OEM guards and the Ral­ly Armor poly­gon clips

20200229_1037216711086144302892584.jpg
Direc­tions say to mount them onto the met­al, one upper and one low­er. It did­n’t say any­thing about how the trim is attached there too, so I just slid it in behind

20200229_1039196775902842858286200.jpg
Same for the top. The direc­tions say at an angle, so I fol­lowed the image, but then doing the oth­er side lat­er, I real­ized it does­n’t mat­ter how it’s angled. So then, I just copied how the OEM clips were angled.

20200229_1044073219940618703135359.jpg
Shove the lin­er back into place behind the met­al and plas­tic trim lay­ers (mine was stub­born and need­ed a firm shove/fist) and line up the holes. My clips would move around, so make sure it’s still lined up.

20200229_1120381989585496154962968.jpg
3 wash­ers and 3 screws. Two 1.5SS long screw and one 1SS short screw

20200229_1053045614820004323124190.jpg
Spac­er 0.25SP

20200229_1146163233267912827627865.jpg
On the inner­most mount, take your INS5 fas­ten­er and pop it into the hole. Don’t push the pin thing inside the insert (make sure you’ve removed the OEM clip if your car came with the guards)

20200229_114559_hdr2724933654235749036.jpg
Pull out the thing.

20200229_114724_hdr6845804321051207724.jpg
Per instruc­tions

20200229_114734_hdr388382859670978357.jpg
Add the 0.25 spac­er

20200229_1150447948687522927697608.jpg
So here, I had a lot of trou­ble get­ting the short screw to seat in the INS5, so I end­ed up swap­ping out one of the long 1.5SS screws for the short 1SS. Worked like a charm.

20200229_110542_hdr7906977376995604237.jpg
Voila

20200229_110450_hdr5371970446967589251.jpg
Don’t for­get to reat­tach the under screw. I don’t know if it makes a dif­fer­ence, but I don’t like the idea of leav­ing it emp­ty.

Rear Mud-flaps

20200229_115345_hdr1315330604259216291.jpg
First thing is to remove the OEM guards just like in the front. There are two screws on the out­side towards the wheel

20200229_115318_hdr4659142589565261655.jpg
There is one clip under­neath

20200229_120532_hdr1860704442508264426.jpg
This one was an absolute beast to remove. I slid my thin flat­head under the mid­dle part, then eased it out, hav­ing to switch to a larg­er flat­head, and even though it came out, the rest was stuck in the car, so even­tu­al­ly I had to use pli­ers to pop it out. I tried to not break things, but I had to use a lot of force in the end.

20200229_1158211764968540573147423.jpg
There’s one more clip near the wheel on the inside. Good luck if you have big hands. Some more bit of force and POP it comes out.

20200229_115957851366409397740002.jpg
Time to remove these two above where I removed the 2 screws hold­ing in the OEM guard

20200229_120004_hdr8440072626176242974.jpg
Push the inner riv­et pin in to unlock it

20200229_120128_hdr4717121878189756785.jpg
My thin flat head here again to ease it out. You could use a plas­tic pry tool, I guess. My low­er one was extreme­ly stub­born, while the upper one came out with­out any prob­lems.

20200229_120223_hdr7685557622748005699.jpg
There she is

savedimage_20200229_120554_016232362898609368636.jpg
Next step is to put the stick­er on the back of the met­al brack­et. Then, it goes on the under­side of the car in an emp­ty hole on the under trim, with the met­al brack­et’s threads point­ing towards the front of the car. It will be where the inner por­tion of the mud­flap will secure

20200229_120655_hdr3553384605612464804.jpg
Here’s the tricky part. I used a sock­et wrench, a short­er sock­et and then a deep sock­et to try and do this

20200229_1211085244364677121826966.jpg
Slide your­self under­neath the car. I put the sock­et over the lock nut (set it up per the instruc­tions with the machine screw). The nice thing is that the sock­et wrench’s han­dle (on the right side of the car) just hung out against the car while I tried to tight­en with a screw­driv­er until I could­n’t go any­more with this set­up

20200229_121545_hdr3999252305310982576.jpg
Then I switched to sit­ting up, and you can’t see if from this crap­py image (Every inch of me was freez­ing at this point) but I’m hold­ing a reg­u­lar fixed wrench on the almost tight lock nut and then using a screw­driv­er under the car to tight­en it up. I’d leave it a lit­tle loose at this point so that lat­er you can still move the met­al brack­et around for posi­tion­ing the mud­flap. Just don’t for­get to tight­en it lat­er.

20200229_121643_hdr8842509643759320581.jpg
Time for the 3 orange clips. Thank good­ness for some­thing easy

20200229_122023_hdr3482409479992533966.jpg
Make sure to remove the OEM clips first. The top two go between the trim and the met­al (don’t wor­ry about the upper­most hole. It needs to stay emp­ty for easy maneu­ver­ing of the trim)

20200229_122020_hdr7063078066853659665.jpg
The bot­tom-most clip goes over the trim. I had a hard time slid­ing it on with my freez­ing fin­gers, so I just put the flat­head inside the orange clip to keep it open and then eas­i­ly slid it over where it need­ed to go

20200229_122114_hdr3847629544151590640.jpg
4 wash­ers, 1 lock nut, and 3 skin­ny screws. Don’t for­get the lock nut’s wash­er! Screw­driv­er and sock­et wrench time. It’s a tight work­ing space. Leave them all loose until you posi­tion it all right and then make sure to tight­en every­thing up. Don’t for­get the riv­et pin clip and the large clip under­neath the car!!

20200229_125310_hdr165464478125603775.jpg
All done!! Snazzy!! 🙂 Go around and recheck placement/positioning of the flaps. It’s nice that it’s so easy to do. Make sure not to over­tight­en any­thing!

In Conclusion

Per­fect­ly doable for an ama­teur like me. I start­ed at around 10ish and fin­ished up around 1:30pm. Grant­ed, I had help about 13 of the way through and I ran into quite a snag with the inner­most mount for the front mud­flaps, not to men­tion some time to real­ize that with the OEM guards you have to remove all the clips that came with it. I also did not under­stand the place­ment of the INS5 or .25 spac­er. My help had to, well, help me and then it all made sense. Then there was the issue of the 1SS short screw not seat­ing into the INS5, and then mak­ing the deci­sion to swap one of the 1.5SS long screws with the 1SS short screw (since there were two hold­ing the out­er por­tion). The back was only tricky with the stub­born clips and mount­ing the met­al brack­et.

I hope this post will help shine some light on the instal­la­tion. I end­ed up email­ing Ral­ly Armor and sug­gest­ing per­haps chang­ing the front screws to all 1.5SS long screws, or bet­ter yet, just skip­ping the INS5 thing and mak­ing it poly­gon clips like the oth­ers and how Sub­aru installed the OEM guards. Seems over­ly com­plex for no rea­son. Maybe it’s for flex­i­bil­i­ty? I don’t know.

Enjoy a tru­ly qual­i­ty prod­uct and a badass look to your Out­back!!