thread size/brake line size between master cylinder to HCU

[WUrbowicz]

Specs on...Brake line rusted out between the front and rear inlet ports of the master cylinder and the HCU block / need to replace or create / 2004.5 Ram 5.9 3500 SRW

 

[Topzide]

@WUrbowicz, I would recommend the NI-CU line! It is soooo much easier to work with! Flares well and you can bend by hand without kinking it. Replace the lines on my 1500 with it and had to due a repair on a trip to a Caravan that had a line bust on the interstate! Many miles adding fluid to get where I was going! Check on Rockauto.com for $. It'll be the last time you have to fool with them. If you don't have a brake bleeder kit, you can make one with a replacement master cylinder cap and a propane regulator. Put a tire valve stem in cap, remove core, hose from regulator to valve stem, then a 1/4" air line fitting into regulator. Only puts out around 2psi! Great for this or checking for vacuum line leaks. Neat little hack I saw and have used on my trucks. Not quite as good as bleeder kit, but allows it to be a 1 person job! Good luck on the repairs.
Take bust line off, clean up end and local auto parts should have them. I know they carry line also. Might be cheaper locally considering shipping.