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Mod | | | Forums66 Topics128,157 Posts1,056,887 Members48,458 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Aug 2005 Posts: 71 'Bolter | | 'Bolter Joined: Aug 2005 Posts: 71 | HI ,Napa online can be a problem child ,Here is a trick for the Napa to find parts for your truck .
1 - put in search box master cylinder
2 - do not put any info to what kind of vehicle your looking for click search .
3- now it will be a new page showing master cylinders now look for medium to heavy duty trucks in the menu on the left ,then the make ,and then the year .
Now you should see the master cylinder listed for your truck it should say one and a quarter inch bore same as my 48 2 ton Part Number: UP 33 $20.70 /ea rebuild kit only available
wheel cyl. front Part Number: UP 3406 31.95 /ea
kit Part Number: UP 8 $14.85 /ea
Wheel Cylinder - Rear Part Number: UP 3677 102.60 /ea
kit Part Number: UP 37 $15.75 /ea
RAYBESTOS Part # MC9220 master cyl rockauto.com $44 and change plus shipping
DORMAN Part # M9220 master cyl. rockauto.com $80.79
rockauto.com has the the wheel cyl's much cheaper
Just call me I can give you more info .865 274 3793 EST Florida .,I'm up late paul
I changed mine to a one and a quarter inch bore dual circuit master cyl. a 7" dual diaphragm booster ,great brakes but it needs a vacuum holding tank and check valve put into the system .
Hope this helps
Paul N.
1948 Chevy 2 ton flatbed ex fire truck , and various motorcycles .
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