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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH997 coolant tank in 1999 996 car?
Leading reported evidence
Use 01+ coolant tank
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Leading evidence: 'Use 01+ coolant tank' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace aos while i was back there' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Suggestion
I did it by lowering the engine and also replace the aos while I was back there.
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Suggestion · Original poster
I hear rumor that one can use the 997 coolant tank in the early 1999 996 car, with possible modification.
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Suggestion
Everyone struggles for hours R&Ring the coolant tanks, ( or uses a SawsAll on a bunch of stuff ) ..but if you lower the engine from the rear engine mounts you can also "push" the engine over to the passenger side a lot more than you think...
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Suggestion · Original poster
Now, if I can convince Porsche to stop using those quick squeeze clamps that always face the wrong way.
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Suggestion
Everyone struggles for hours R&Ring the coolant tanks, ( or uses a SawsAll on a bunch of stuff ) ..but if you lower the engine from the rear engine mounts you can also "push" the engine over to the passenger side a lot more than you think...
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T055238Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The proper 1999 coolant tank is 3x more expensive than the proper 997 coolant tank. I hear rumor that one can use the 997 coolant tank in the early 1999 996 car, with possible modification. I can tell that the 997 tank is a bit longer at the tail end than the 996 tank.
Please, can someone who has DONE this confirm that the rumor is true and if there to be any modifications?
The 997 tank is the same as the 996 2001 and up so that may help in your search for the answer.
Here is previous thread
https://rennlist.com/forums/996-foru...n-996-1-a.html
From what I've read, the only person who did this did it with the engine out, so I'm not convinced that it's doable. It's tough enough getting the proper tank in.
I had a 2000 996.1 with a failed original coolant tank. I used one of those trash uro parts replacements and it failed in 2 yrs. The OEM . 1 tanks is $1300 or so in Canada, the .2 tank is 1/3 the price. It will fit. You have to trim off some webbing from the bottom to get it in. It's an extremely tight fit with the engine in the car and the intake manifold on. I did it by lowering the engine and also replace the aos while I was back there.
Everyone struggles for hours R&Ring the coolant tanks, ( or uses a SawsAll on a bunch of stuff ) ..but if you lower the engine from the rear engine mounts you can also "push" the engine over to the passenger side a lot more than you think...
It makes the R&R much much easier ...
Let me confirm that this conversion does work. The modification is minimal and the longer tank fits without any issue. Now, if I can convince Porsche to stop using those quick squeeze clamps that always face the wrong way.
I too can also confirm this works. I used a 01+ coolant tank on my 99. Easier to do with the engine lowered quite a bit, and maybe the driver's side intake plenum removed, but I don't remember.
This is a source reference. Confirm exact model applicability in the original material.
