MAF sensor o-ring size - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

SPCorBUST · 06-29-2018, 06:13 PM

Does anybody know the size of the MAF sensor's o-ring? I can't seem to find it and none of the ones at Autozone seem to fit. Would really hate to buy a new MAF sensor for a rubber seal if I can avoid it, its like $230.

Hoping to pick one up at Home Depot, Lowe's, or someplace similar.

CSG Mike · 06-29-2018, 06:27 PM

H2.00 x 22
Buna Nitrile.

1Cor10:23 · 08-27-2018, 03:21 PM

Quote:

Originally Posted by CSG Mike

H2.00 x 22
Buna Nitrile.

Sorry for my lack of understanding, what does the H stand for?

Having a hard time finding this, there are quite a few 22x2.5 on Amazon.

CSG Mike · 08-27-2018, 06:20 PM

Quote:

Originally Posted by 1Cor10:23

Sorry for my lack of understanding, what does the H stand for?

Having a hard time finding this, there are quite a few 22x2.5 on Amazon.

Part number

Anything that fits the specs will work.

Buna-Nitrile
22 mm ID
26 mm OD
2 mm Width

Trueweltall · 08-28-2018, 09:54 AM

https://www.amazon.com/dp/B005RUR0F6/ref=biss_dp_t_asn

1Cor10:23 · 09-12-2018, 03:20 PM

Quote:

Originally Posted by Trueweltall

https://www.amazon.com/dp/B005RUR0F6/ref=biss_dp_t_asn

Just tried some 75A Viton o-rings and they are significantly stiffer than OEM, so much so that I can tell the engine is stumbling when slowing down in neutral gear, suggesting that the MAF is leaking.

@CSG Mike any suggestion for shore rating? Internet says 70Ais most common but not sure what the OE is.

mrg666 · 09-12-2018, 04:09 PM

Quote:

Originally Posted by 1Cor10:23

Just tried some 75A Viton o-rings and they are significantly stiffer than OEM, so much so that I can tell the engine is stumbling when slowing down in neutral gear, suggesting that the MAF is leaking.

@CSG Mike any suggestion for shore rating? Internet says 70Ais most common but not sure what the OE is.

I would make sure that o-ring stays in place while pushing the MAF sensor. MAF sensor should sit flush. Sometimes the o-ring does not stay in its groove while pushing the MAF sensor in place. You can also rub a dab of grease just to wet the o-ring for sealing it air-tight.

1Cor10:23 · 09-12-2018, 04:11 PM

Quote:

Originally Posted by mrg666

I would make sure that o-ring stays in place while pushing the MAF sensor. MAF sensor should sit flush. Sometimes the o-ring does not stay in its groove while pushing the MAF sensor in place. You can also rub a dab of grease just to wet the o-ring for sealing it air-tight.

Yup, flush and using grease...

CSG Mike · 09-12-2018, 04:26 PM

Quote:

Originally Posted by 1Cor10:23

Just tried some 75A Viton o-rings and they are significantly stiffer than OEM, so much so that I can tell the engine is stumbling when slowing down in neutral gear, suggesting that the MAF is leaking.

@CSG Mike any suggestion for shore rating? Internet says 70Ais most common but not sure what the OE is.

Tape around it to check for a seal.

Still stumbling? u got other issues.

Trueweltall · 09-13-2018, 11:35 AM

Quote:

Originally Posted by 1Cor10:23

Just tried some 75A Viton o-rings and they are significantly stiffer than OEM, so much so that I can tell the engine is stumbling when slowing down in neutral gear, suggesting that the MAF is leaking.

@CSG Mike any suggestion for shore rating? Internet says 70Ais most common but not sure what the OE is.

Did you use an oiled air filter?

dynarun55 · 08-15-2023, 03:35 PM

Quote:

Originally Posted by CSG Mike

Part number

Anything that fits the specs will work.

Buna-Nitrile
22 mm ID
26 mm OD
2 mm Width

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

06-29-2018, 06:13 PM	#1
SPCorBUST Senior Member Join Date: Dec 2011 Drives: 2013 Subaru BRZ Limited Location: Orange County, CA Posts: 935 Thanks: 525 Thanked 399 Times in 255 Posts Mentioned: 23 Post(s) Tagged: 2 Thread(s)	MAF sensor o-ring size Does anybody know the size of the MAF sensor's o-ring? I can't seem to find it and none of the ones at Autozone seem to fit. Would really hate to buy a new MAF sensor for a rubber seal if I can avoid it, its like $230. Hoping to pick one up at Home Depot, Lowe's, or someplace similar.

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06-29-2018, 06:27 PM	#2
CSG Mike Join Date: Jul 2012 Drives: S2000 CR Location: Orange County Posts: 14,562 Thanks: 8,942 Thanked 14,211 Times in 6,854 Posts Mentioned: 970 Post(s) Tagged: 14 Thread(s)	H2.00 x 22 Buna Nitrile.

08-28-2018, 09:54 AM	#5
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