UNJ1004 INLET VALVE. Leyland 4/98 and 6/98 engine inlet valve.

Introduced for turbo engines (see the fluted stem).

This part was replaced by NKJ32 INLET VALVE on later engines.

Dimensions:

Head diameter – 43mm
Stem diameter – 8.75mm
Total length – 148mm
Valve seat angle – 30°

See item number 9 in the illustration. 

Compatible with engines:

• Leyland 4/98TT (up to engine number 2140)
• Leyland 6/98TT (turbo truck engines between 1979 to 1980)

Fitted to tractors:

• Leyland 282, 482
• Leyland 802, 804