bbain

Hello all,

Recently my MAF went bad and I had to replace it. Here's what I learned.

Part Numbers
The Porsche part number is 951 606 125BX. I was told by one Porsche parts distributor that BX identifies the part as a discontinued part.

I was also given a Bosch number of 0 280 213 017. I was told that Bosch no longer makes this MAF.

Lastly, I have a Bosch re-manufactured number 0 986 280 139. I was told this was a brief run of re-manufactured MAFs by Bosch, but they are no longer doing this either.

The Search
I called many Porsche parts distributors cross-referencing the above numbers only to find out that there was not a MAF to be found in the U.S. One distributor found 27 new MAFs in Germany, but the price was pretty high. I am assuming that these might be the last new MAFs in existence.

One parts place did offer to get my MAF rebuilt at a reasonable price, but it would have taken 2 weeks to get my rebuilt MAF back.

During my research I found out that the MAF used on the 968 was also used on the Audi RS2, but that did not help me locate one.

The Solution
I found a MAF at a dismantler at a good price and purchased it. My car is running better than ever so I'm wondering if my MAF was slowly going bad over time.

At any rate, I thought I would share with you what I learned.

JDS968

Thanks!

Two questions. First, how much are the new ones from Germany? Second, who offered to rebuild it at a reasonable price?

bbain

I was quoted $498.30 with a $100 core charge for the MAFs in Germany.

Zims offered to get my MAF rebuilt and said they would send it somewhere to have it done. I never asked the name of business that would actually perform the rebuild.

I forgot to mention that I found a VW/Audi part number (034 133 471 N) while researching MAFs as well.

Jfrahm

There are some alternatives that are much cheaper but may restrict flow a bit. The difference is in the plastic grid Porsche uses in place of the metal screen and not the housing or electronics IMO. Your sensor element could be swapped out and the good sensor put into the Porsche/RS2 housing though, and you should be all set.

The early 90s Audi 200, ur-S4 or ur-S6 meter will work, as will one from a bunch of Volvos and Saabs. I have run a Volvo one I got from the breakers for $40 without trouble:

Bosch 0 280 213 012

It also fits a bunch of Ferraris, so if you were dying to pay $700 for one you can get one from the Fezza dealer and feel like a king when you step up and order an F50 MAF (BTW anyone who thinks this meter does not flow well should look at the F50 HP specs.)

The smart play might be to get your meter rebuilt by Injection Labs here in Boulder and if you need the car in the meantime, get a Volvo MAF to swap in while you wait. A good question for them is if they can replace the plastic flow screens on the meter or not.

http://www.injectionlabs.com/massmeter.html

More info than you probably wanted:
http://www.s2central.net/ds_G70.html

Cheers,
-Joel.

JDS968

Funny thing is, my MAF, so far as I can tell, works perfectly. It's the plastic grid that I'd like to replace, as one of the "bars" cracked and had to be, err, amputated.

Not terribly worried about it, but it would be nice.

Would be extremely amusing to go to the Collection and tell them I need a mass airflow sensor for my Ferrari F50, but not $700 amusing.

Jfrahm

Actually the $700 one - first that is online price so the dealer price is probably a lot more. Plus that Fezza MAF is the same Bosch part as the Volvo/Saab MAF so it has the dense screen like the Audi 200/S4/S6 and not the open grid that Porsche cooked up for the 968 and RS2.

Here is the thread I was looking for earlier that compares the RS2 (968) MAF to the more common Audi 20v Turbo part:

http://forums.quattroworld.com/s4s6/msgs/20442.phtml

-Joel.

JDS968

I've got to wonder, if the 500+bhp F50's V12 is perfectly happy breathing through that denser screen, does that suggest that it's not a bottleneck?

968gene

Perhaps it's sucking through two MAF sensors?

http://pryok.com/wp-content/uploads/...cification.jpg

Jfrahm

Hehe, good catch.

BTW Direct Auto has rebuilt 968 MAFs for a buck-fiddy plus $66 core. They may not have a core to rebuild for you and may not be able to fix the screens. Not a bad price though.

I have not checked with Injection Labs to see what their prices are like.

-Joel.

JDS968

Hey what about a Lindsey aftermarket 951 upgrade MAF? Designed to replace the AFM on a 951. $454.95. Apparently it has adjustable output voltage, so it might need to be adjusted to match the stock MAF? Not sure whether it would work properly...

kwikt

Wow, makes me want to hang on to my spare maf for a while.

odurandina

been telling XSChop to get into cloning Ferrari parts....




nice !

Rogue_Ant

How common are MAF failures in the 968..?

Rogue_Ant

bump.

bbain

I would say not that common. Mine went bad due to water getting in it, which is a whole other long story that ended well.

I was trying to share part number info I found while looking for a replacement.