Hydraulic cam followers

[Gilles]

Originally Posted by Gelbster

This is more like the M96 lifter. .

I would like to know if the M96 and the 987 lifters are indeed different or we are just talking a marketing gimmick perhaps…?

If by any chance these are interchangeable with each other there will be a Big price difference…!

[Gelbster]

987?
for the M96, just look it up the Rock Auto catalog BGA....
Check with INA
Check the Interchange catalogs.
They fit but I do not know if they work -yet.
Whatever ,they will work much better than the ones I removed!

[jsceash]

Originally Posted by Gilles

I would like to know if the M96 and the 987 lifters are indeed different or we are just talking a marketing gimmick perhaps…?

If by any chance these are interchangeable with each other there will be a Big price difference…!

99610504172 is the 987 2005 and 2006 intake and exhaust tappet and 2007 up exhaust tappet in 2007 the intake Tappets changed because of VarioCam Plus. With that said this is the same as the previous 99610504150. I purchased 6 -99610504172, from the local Porsche dealers part department. I used 4 to rebuilding my 2004 motor. The Porsche parts clerk said the 72 part supersedes the previous 50 number.

I now have a Tappet from a 2003 2.7 inside is imprinted INA 577.9 I have A tappet from a 2004 3.2 Inside it is also marked INA 577.9 I also have a 99610504172 the part listed as the 987 current used part Inside it is marked again INA 577.9.

After looking at the video post previously, I took all 3 apart. The internal parts are all the same. The internal parts can be install in all three bodies and they all compress and return.

[Gelbster]

The 72/50 issue has been covered in previous posts years ago ,usually they mention BMW also.The poster was Harn I think on the 'other' P-car Forum.
The unknown is what subsequent running changes to dimensions/tolerances/specs were made .The critical issue imho is - are the latest/interchange parts less likely to jam the tappet hard into the bucket ?Forget the Porsche numbers.Porsche do not make the part.INA do. INA do not need to change part numbers if they make minor(?) running changes to the part.Except for the hammered/jammed issue ,my tappets were mostly perfect after 90k miles.Pity not to use them but if they got jammed soon after reuse ,that would be stupid.At $40== x 24,I might have tried it. At $8x24 ,it was .....
The part I found via INA and bought as a BMW item(now revised to Porsche also) on Rock Auto is totally unproven in terms of long term functionality in the M96. Yes, it is dimensionally perfect but there may be more to this issue than simple physical dimensions. According to Rock Auto I was the first customer to buy this part via them for this unlisted application. Neither Rock Auto nor their vendor in England would commit in writing an assurance the lifter would work correctly in the M96. I guess they have gotten a little bolder recently and added the M96 to that application listing.
Yes, the savings are huge which was why I was so puzzled that my original research got no interest. $8 vs $40++ x 24 = significant to me.
If is requires replacement with the $40++ item soon ,it will be a very expensive failure. Beware!