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Old 02-01-2024, 02:13 PM   #1
CCCC
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Join Date: Mar 2007
Location: San Pedro River, SE Arizona
Posts: 734
Source for master cylider rubber cups?

Rebuilding three master cylinders fitting 3/4 ton Chevs (68-72), correct aftermarket "parts kits" for this one seem difficult to find, and kit prices in general seem not very decent.

Bore is 1.25" and I simply want to replace the 2 and 3 "hole in center" rubber/whatever cups used on the two pistons in each cyl. I have exact dimension measurements.

Where can a guy buy just the cups? Any help appreciated.
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CCCC
67 Sting Ray Coupe 327 4sp; 68 K10 Suburban 327 4sp; 69 K20 Lifted 383 4sp; 69 C80 Fire Truck 478 V6 5sp/2sp; 69 C20 Longhorn 327 4sp; 70 C30 Wrecker 350 4sp; 70 C30 Flat Bed 350 4sp; 71 C20 LWB 350 4sp; 72 K5 Blazer 350 4sp; 72 C30 Flat Bed Gooseneck Hauler with sleeper 350/TH400; 72 C20 Longhorn 402 4sp; 52 Mack LTL Supercharged Cummins 5sp x 3sp; 01 Dodge 5.9 HO Cummins 6spd; 02 Safari Trek 2430 8.1 Vortec on Workhorse Chassis; 03 Silverado 2500 HD 4wd Duramax/Allison
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Last edited by CCCC; 02-02-2024 at 06:49 PM.
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