CMK189 Engine Timing Gear/Idler Gear Thrust Washer. 

Fitted to Nuffield, Leyland and Marshall tractors up to January 1984 after which a new centre timing gear was introduced.  Also fitted to JCB engines and Marine engines.

See item number 12 in the parts illustration.

Fitted to engines:

BMC 2.8 litre 3 cylinder  engine
BMC 3.8 litre 4 cylinder engine
Leyland 4/98 4 cylinder engine
Leyland 6/98 6 cylinder engine
BMC 5.7 litre 6 cylinder engine
Thornycroft T230, T345 marine engine
Commodore 3.8 marine engine

Fitted to:

• Nuffield 342, 460, 10/42, 10/60, 3/45, 4/65
• Leyland 344, 384, 255, 270, 262, 272, 462, 472, 282, 482, 602, 604, 702, 704, 802, 804
• Leyland 285, 2100, 485, 4100
• Marshall 602, 604, 702, 704, 802, 804
• JCB 2B Mk2, JCB 3C Mk2.  JCB 3C Mk3, JCB 3D, JCB 4D
• BMC and Leyland Trucks