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Old 04-08-2016, 09:37 AM   #1
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Only the very earliest 2.5L cars (1997 and early 1998) had an odd ball setup that used and adaptor plate between the oil cooler and the engine, and these also lack the small upper return line running from the top of the cooler to your surge tank in the trunk. Yours should not be that way, but you can easily check on it by looking at the existing cooler.
And are the o rings a PITA to get hold of?
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Old 04-08-2016, 09:56 AM   #2
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And are the o rings a PITA to get hold of?
No, any dealer can get them for you and they are not at all expensive.
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Old 04-09-2016, 04:36 AM   #3
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No, any dealer can get them for you and they are not at all expensive.
Do you know the part number for the oil cooler? I found a behr/ hella model number 8MO376726-111 and it says its for Porsche part number 99610702557/1. Is this the right one please? Will it have same o rings as on the base model? Can I use my o rings with it or would they have to be new? Reason I'm asking is that the shop that has the oil cooler doesn't stock the o rings.
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Old 04-09-2016, 04:59 AM   #4
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Do you know the part number for the oil cooler? I found a behr/ hella model number 8MO376726-111 and it says its for Porsche part number 99610702557/1. Is this the right one please? Will it have same o rings as on the base model? Can I use my o rings with it or would they have to be new? Reason I'm asking is that the shop that has the oil cooler doesn't stock the o rings.
Latest part number I have is 996-107-025-59 (retails for around $280) for the cooler. And never reuse the four O-rings, you will end up with leaks. We also have never used aftermarket versions of this cooler, only the OEM.

The 99610702557/1 part number is a discontinued item.
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Old 04-09-2016, 05:45 AM   #5
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And be careful buying a used OEM as it may have metal particles in it from an IMS failure or some other engine catastrophe where metal particles are released.
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Old 04-09-2016, 06:42 AM   #6
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And be careful buying a used OEM as it may have metal particles in it from an IMS failure or some other engine catastrophe where metal particles are released.
No, I was looking at a new one from design 911. Funnily enough they stock the original for the base 986 but they only have aftermarket for the s
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Old 04-09-2016, 12:35 PM   #7
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And be careful buying a used OEM as it may have metal particles in it from an IMS failure or some other engine catastrophe where metal particles are released.
I would have any used, unknown cooler ultrasonicly cleaned & pressure tested before installing with new O-rings.
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Old 04-20-2016, 01:09 AM   #8
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so i bought the larger S cooler, but i have a problem, it wont fit. the reason being that i had enlarged the air intake hose, and the larger hose rests on the original oil cooler. if i install the larger oil cooler, the intake hose will be lifted up and then the engine cover wont close. stupid me i didnt check this before i bought the oil cooler. now i have a brand new larger oil cooler that i cant use, unless i fit the original intake hose, which i dont really want to do since i also have the enlarged throttle body and pedro's intake plenum!
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Old 04-09-2016, 06:40 AM   #9
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Latest part number I have is 996-107-025-59 (retails for around $280) for the cooler. And never reuse the four O-rings, you will end up with leaks. We also have never used aftermarket versions of this cooler, only the OEM.

The 99610702557/1 part number is a discontinued item.
Ok thanks, ill try and buy an OEM version then, together with new o rings
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