Farmall 404, International 404 Piston

404 Piston – Serial 100,500 & up

Original Piston -- Zollner 4095 -- CaseIH Part # 375800R1(R2 later)

3.2500 Bore  

3.838 x .228 Flange 

3.467  Seal  Land  

3.595   Barrel Diameter

7.0    High

Late 404 Sleeve Assy. -- Federal Mogul FP-SL2710 – Clevite - Discontinued 

CaseIH Part # 367795R1 O-Ring -- [Currently listed as 367799R1]

223-7118  O-Ring [Clevite]

Side by side comparison of pistons for the C135 engine.
Click to enlarge