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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBrake Master Cylinder Alternative?
Leading reported evidence
Repair kit
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that contain suggestions
1
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Suggestion
Its just a piston and some seals, so not that tricky to rebuild and really cheap to do via the repair kit.
Leading evidence: 'Repair kit' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair kit' (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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8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261026T191851Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi, fairly new Porsche owner here. I've been reading this forum for a while and decided to make an account. My 996 C4S is in the shop currently for a faulty brake master cylinder. They are quoting me over $1100 for the part having number of 996 355 910 50. Does anyone happen to know of any alternative options for this part? This is the picture of the part they need for my car, and they noted that the orange piece is a different size than the black one. Thanks so much
Cars245.com
https://cars245.com/en/item/ate-2421...ster-cylinder/
Rebuild kit
https://cars245.com/en/item/autofren...ster-cylinder/
Or upgrade to the TRW Branded GT3 version if you can find one.
Its just a piston and some seals, so not that tricky to rebuild and really cheap to do via the repair kit.
We used to do this all the time back in the day!
A warning for the GT3 master cylinder. Sometimes it doesn't play nice with PSM. Of course GT3's don't have PSM. Using it on a PSM car might require a brake proportioning valve to prevent PSM errors. I needed one on my PSM car or I'd get a PSM failure instantly the first time I braked.
I ended up unplugging the PSM pump because PSM doesn't like heavy trailbraking into corners.
Thanks. I ordered this:
Porsche Brake Master Cylinder 99735591030 – TRW PMN166 TRW PMN166
$223 shipped with tax. Not bad IMO.
I'm about to take on a brake change. Figured it was a good time to buy.
This is a source reference. Confirm exact model applicability in the original material.
