The Ford Barn

ursus · 03-05-2026, 01:33 PM

I need to replace the leaky 1939-41 Ford master cylinder in my coupe. I have a new and never installed Wagner brand master cylinder that came with a parts collection that I acquired back in the 1980's. The box was faded and a bit scuffed up then so I imagine the part could have been made back in the 1960's.

Is this old but new master cylinder OK to install as is or should I dismantle it to check the condition of the seals? I am concerned about the condition of a mechanism that has lain dormant for so long.

03-05-2026, 01:33 PM	#1
ursus Senior Member Join Date: May 2010 Location: Oregon Posts: 1,534	New Old Master Cylinder I need to replace the leaky 1939-41 Ford master cylinder in my coupe. I have a new and never installed Wagner brand master cylinder that came with a parts collection that I acquired back in the 1980's. The box was faded and a bit scuffed up then so I imagine the part could have been made back in the 1960's. Is this old but new master cylinder OK to install as is or should I dismantle it to check the condition of the seals? I am concerned about the condition of a mechanism that has lain dormant for so long.