Do I have to replace the throttle body gasket when cleaning it?

[xsr]

Hey guys,
I’m planning to clean my T.B and gotta ask if I should replace the gasket. I bought an Ajusa one, is it ok to use it or better to reuse the old OEM one?
I mean, even if the old gasket looks ok, should I swap it with the Ajusa one just to be on the safe side?

My car is 2016 Mazda 3 2.0L with 76K miles.

Thanks!

 

[ceecbtg]

On perfect world, gasket uninstalled, gasket changed, usually, exhaust/head apart, old gasket can be reused. If you buyed it then change it or Murphy's law will knocks you with old leaking gasket and you will do double work.

 

[fozzdesy2001]

just replace the gasket to make sure it stays leak-free. Getting them off in one piece can be impossible

 

[97prizm]

Hey guys,
I’m planning to clean my T.B and gotta ask if I should replace the gasket. I bought an Ajusa one, is it ok to use it or better to reuse the old OEM one?
I mean, even if the old gasket looks ok, should I swap it with the Ajusa one just to be on the safe side?

My car is 2016 Mazda 3 2.0L with 76K miles.

Thanks!

I'd replace it. You never know how worn the original is even if it looks good.

 

[demarpaint]

Replace the gasket.

 

[rijndael]

If it's the rubber o-ring type, and it's proud of the recess in which it sits, re-use it. Like this: https://bobistheoilguy.com/forums/threads/16-mazda-3-throttle-body-gasket.398654/

If it's a flat layer/sheet, not rubber, I'd probably replace it.

 

[Andyd95]

You may not have to remove the throttle body to clean it, that said you can probably reuse it however if you have a new one it’s obviously preferred and the right thing to do

 

[rszappa1]

As they say dont do the job half A$$....Just replace the gasket with a new one and move on...simple....

 

[The_Jeff]

Have the gasket on hand, but if the old one comes off in one piece I'd reuse it. Otherwise you're scraping it off, gouging metal, and having little bits stick around.

 

[dogememe]

If it's a flat paper style gasket, change it. If it's a rubber o-ring style that is in its little groove, it's probably fine.

Edit: someone above already said the same thing. Lol!

 

[CleanSump]

Even the rubber ring type get harder or get out of round when compressed for years under the part. You have the replacement, why play poker?

 

[xsr]

Thanks everyone for the advice!
I just cleaned the throttle body. Actually, the front side looks pretty clean. The rear side had some buildup. The cleaning doesn’t make a noticeable difference in driving, but it seems like good preventive maintenance. Attached some pics.

 

[dfarr67]

You didn't need to replace that o-ring.