Difference Master Clutch Cylinders
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Drifting
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From: Atlanta - - - - - Save the manuals
Difference Master Clutch Cylinders
Anybody know the difference between a GM Clutch Master Cylinders GM 19331708 and GM 19331709. The "09" version seems to cost just a bit more. I want to replace the master cylinder in my 2005 Z51 MN6.
Burning Brakes
Joined: Oct 2015
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From: Orlando Florida
GM 19331709 is the replacement from the ZR1 and the one you should go with, it has the opaque (black) reservoir. This is the one they use when replacing the under warranty.
Last edited by BigBlok502; Nov 22, 2020 at 08:31 AM. Reason: Added the word "black."
Melting Slicks
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Race Director
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Melting Slicks
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Yes go with the ZR1 replacement (09). It’s $87 at www.chevynationparts.net 
borh those part numbers are the new and replacement for the ones that failed only difference is year when you type them in. Below 2008 will pull the the 08 part up, 09 and up pull the 09 part number up. Don’t think there is any difference in the two 🤷🏻♂️ either way both part numbers would be the replacement not the recalled version. It’s no longer produced or for sale commercially
Last edited by 73DBG; Nov 21, 2020 at 11:29 PM.
Burning Brakes
Joined: Oct 2015
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From: Orlando Florida
Melting Slicks
Joined: Apr 2018
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I think the part number stuff is most confusing tbh, took me a second to figure out what the deal was
Racer
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From: Houston Texas
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Thread Starter
Drifting
Joined: Sep 2014
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From: Atlanta - - - - - Save the manuals
Yes go with the ZR1 replacement (09). It’s $87 at www.chevynationparts.net
Melting Slicks
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Race Director
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From: Prosper TX/Austin TX
2020 C6 of the Year Winner - Modified
Race Director
Joined: Nov 2017
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From: Prosper TX/Austin TX
2020 C6 of the Year Winner - Modified
Racer
Joined: Apr 2006
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Likes: 70
From: Houston Texas
Just a lot easier to see when the fluid is clean using the Ranger method with a clear reservoir. With the black one I feel like I am just looking into a black pit.
Thread Starter
Drifting
Joined: Sep 2014
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From: Atlanta - - - - - Save the manuals
Thank you, I usually use Prestone 3/4 Brake fluid, but I will change to a "just" DOT 4 fluid. This is a good point .... Spend the bucks and get the correct "stuff" and you will have fewer expensive problems.
Last edited by Dutch08; Nov 22, 2020 at 05:37 PM.
Burning Brakes
Joined: Oct 2015
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From: Orlando Florida
Check out this old thread, specifically post #3 where Dano523 explains the problem and the changes in the master cylinder. Also, to be clear (pun intended,) the new black reservoir is opaque and you cannot see the fluid level. The old style is translucent, white, and you can see the fluid level.
https://www.corvetteforum.com/forums...-cylinder.html
https://www.corvetteforum.com/forums...-cylinder.html
Melting Slicks
Joined: Apr 2018
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If you really want to protect the clutch system just spend the money on Castrol SRF racing fluid and never look back 👌🏻
Melting Slicks
Joined: Apr 2018
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I know it can have its own issues it definitely flows a good bit more fluid and a higher flowing slave helps its adjustable so it’s not a replace and it’s all good you’ll need to make adjustments. I didn’t get it because of that reason and I have zero intentions of launching the car.
Drifting
Joined: Nov 2011
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From: western NY
Just something to think about, at the time there was a TSB that covered the replacement, with the different part numbers. Your best bet is to call the dealer parts dept, give them the last 8 of your VIN and let them confirm the correct part number you need.
Melting Slicks
Joined: Jan 2013
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From: what ain't no country I ever heard of
Swapping out for the clear reservoir on the new assembly is the best so you can see the fluid at a glance.
and I’m wondering if the part numbers are different because the torque tubes are an inch shorter on the 09+
and I’m wondering if the part numbers are different because the torque tubes are an inch shorter on the 09+
Last edited by reasonable suspicion; Nov 25, 2020 at 08:31 PM.