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hemi43 · 07-07-2023, 12:13 PM

That's a drum brake master cylinder, and 72 came with discs. So, no! it's not original, IMHO.
Most OEM disc master cylinders will have a larger resevoir for the front calipers.

This is how my all original K5 came with. It's a 1970, so it had drum brakes all around.

07-07-2023, 12:13 PM	#2
hemi43 Registered User Join Date: Mar 2015 Location: Ontario Canada Posts: 1,500	Re: Is this factory master cylinder? That's a drum brake master cylinder, and 72 came with discs. So, no! it's not original, IMHO. Most OEM disc master cylinders will have a larger resevoir for the front calipers. This is how my all original K5 came with. It's a 1970, so it had drum brakes all around. Attached Images Last edited by hemi43; 07-07-2023 at 12:23 PM.