I need to order a Gasket for the MC Cap. Is it possible to find out which one I need. The Cap is 160mm long (edge to edge)
and it's 85 mm wide. The old Gasket is marked with "made in USA" and "R4830". Truck is F150 4x4, 400 +C6, PB. Thanks!!!

 

The only one I found for my truck are from LMC but still not sure because their item number 45-3621 says for 2WD
and 4WD F150 77-79, Bronco 78-79 and F250 77-79. My Truck is made 1976 but model year 1977 and I am not
100% sure it's the original MC either. Can anyone help me out here with some info? My cap, measured upside
down from edge to edge is 85x160mm. Maybe Ford still have some for sale? Thanks!

 

Can you post up a picture of your master?
I am thinking it is just a normal master.
Dave ----

 

I looked into the same thing for mine. I decided to just go with a new complete master cylinder. Gasket was about 8.00, master cylinder was about 18.00

 

D5UZ-2167-C (replaced D5UZ-2167-A) .. Master Cylinder Cap Gasket / Obsolete

1975/91 E100/150; 1977/79 F100 2WD; 1977/91 F150 2WD/4WD; 1980/83 F100 with power brakes.

 

This could be it :

https://www.rockauto.com/en/moreinfo...125964&jsn=630

Or, assuming the bore size is the same, you could get rid of the nasty OE master cylinder completely (with a bit of work) and replace it with this :

https://www.rockauto.com/en/moreinfo...sn=642&jsn=642

 

Thanks a lot Guys! Here's a Picture. I hope it helps some!

 

Have you tried your local auto parts store in the Help section where they keep the oddwad parts like door handles etc? Every store near me has several various sizes in that section.

 

HoustonDave. I live above the Arctic Circle in Sweden. If I ever find a "Help Section" up here,
it's probably going to include Absolut Vodka and Shotguns with Ammo!!!
I will call a part store for american classics tomorrow, otherwise I will buy from U.S but I am still not
sure what to order. I tried google the part nr. I got from NumberDummy ( D5UZ2167C)
and I also checked the suggestion from FMJ. (Dorman 42075) but if I make a search on
the Dorman website they say the part nr. 42075 dont fit a F150-77???

 

D5UZ-2167-C =

GREEN SALES CO. in Cincinnati OH has 39 = 513-731-3304 (greensalescompany.com)

If typing on Green's website, remove the hyphens, type it like this: D5UZ2167C

 

Thanks a lot Bill!
If I dont find Gasket over here tomorrow I will email Green Sales Co. I have ordered from them a couple of years ago
when you helped me with some "hard to find" parts for my F100-56. It worked just fine.Thanks!!!

 

Yes, I suspect you are right? Did not realize your location.

 

Yes, sometimes it's a little complicated to get the right parts over here but thanks to you guys it's a lot easier.
I could not carry out this without all great FTE members. You answered hundreds of my questions, showed me
a lot of Pictures with explanations and you have even sent me new and used parts.
Thank you so much ! ! ! !
Matt