Comes complete as picture shown assembled in the box. Also for the P39 pressure cleaner. This is an factory original part not a cheap knock off.

Includes

Part Number	Description	Qty.
39-006	Vac Tube Feed pipe (improved design)	1
48-141	O-Ring Feed Hose Connector	1
C40	Screw 10-32 x 3/8″	10
39-126	Chain	1
39-420	Wheel Sprocket with Bearing	2
39-120	Chain Tensioner (improved design)	1
39-430	Rear Axle Block	1
39-440	Front Axle Block	1
39-200	Gear Box Assembly (improved design)	1
39-004	Bottom Housing (improved design)	1
39-401	Single Side Wheel (improved design)	1
48-045	Screw, 10-32 x 7/8″ SS Pan Head w/Star Washer	4
R0537800	Chain Guard (new to 2012)	2
39-602	Wheel Spacer	2
39-311	Bumper	1
48-036	Wheel Lock Screw	1