ATJ6556 PISTON. Nuffield Hydraulic Lift Piston, 3¹/₄” diameter and takes three ATJ 6400 PISTON RINGS.

First fitted to the last of the Nuffield 342 and Nuffield 460 tractors.  Then fitted as standard to Nuffields 10/42, 10/60, 3/45 and 4/65.  Also fitted as standard to Leyland 344 and Leyland 384 up to serial number 155081.

View item numbered 44 in this parts book illustration of a
Nuffield Hydraulic Power Unit Pump Assembly.

Fitted to tractors:

• Nuffield 342, 460 (last produced) 
• Nuffield 10/42, 10/60, 3/45, 4/65 (standard fitment)
• Leyland 344, 384 (up to serial number 155081)