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Old 02-19-2021, 01:16 PM   #1
eric8
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Master Cylinder Part #

Does anyone know the original GM part number for the brake master cylinder? This is for a 77 C10 2wd with power JB5 brakes. Thanks.
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Old 02-19-2021, 02:47 PM   #2
Keith Seymore
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Re: Master Cylinder Part #

1255770; code "DD".

K
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Old 02-19-2021, 03:48 PM   #3
eric8
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Re: Master Cylinder Part #

Thanks Keith! What's the other part number above that one? The 1800xxxx? Is that an alternative pn?
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Old 02-19-2021, 04:42 PM   #4
Keith Seymore
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Re: Master Cylinder Part #

18001503, which seems to be the "Power Head Assembly number", consisting of the booster and aforementioned master cylinder as an assembly.

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Intro from an Old Assembly Guy: http://67-72chevytrucks.com/vboard/s...d.php?t=342926
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Old 02-19-2021, 04:43 PM   #5
eric8
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Re: Master Cylinder Part #

Ok thanks again.
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Old 02-19-2021, 09:20 PM   #6
wazzabie
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Re: Master Cylinder Part #

Quote:
Originally Posted by Keith Seymore View Post
1255770; code "DD".

K
Hi Keith - What is this document from?
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