• Removing the Rocker Boxes
• Rocker Box Inspection and Servicing
• Installing the Rocker Boxes
• Pics of Evo Sportster Rocker Boxes
• Rocker Arm Inspection and Servicing
• Stabilizing Noisy Rocker Arm Shafts
• Removing / Installing Pushrods and Tubes

Rocker Box Part Numbers
Year Model	Lower Box Part#	Lower Box Casting#	Middle Spacer Part#	Middle Spacer Casting#	Upper Cover Part#	Upper Cover Casting#	Notes
1986-1988 All	17532-86	17554-86	17533-86	17555-86	17501-86	17556-86	Chrome set
1989 All	17532-86A	17554-86A	17533-86A		17501-86A	17556-86A	L89 see TSB M-984
1990 All	17532-86A	17554-86A	17533-86B		17501-86A	17556-86A
1991 All	17532-86A	17554-86A	17533-89		17501-86A	17556-86A
1992-1994 All	17532-86A	17554-86A	17533-90	17555-90	17501-86A	17556-86A	Polished set
1995-2003 All except 883R, 1200C, 1200S)	17532-86B	17579-95	17533-90A	17580-95	17501-86B	17581-95	Chrome set
1996-2003 1200C	17537-96 17537-96C	17579-95 17579-95C	17538-96	17580-95	17551-96	17581-95	Chrome set
1998-2003 1200S	17614-98 17614-98C	17579-95 17579-95C	17533-90A	17580-95	17527-98	17581-95	Silver top Silver bottom
2002-2003 883R	17532-86B	17579-95	17535-02		17501-86B
2004-2006 883, 883C, 883L	17532-86C		N/A		17501-04	17581-04	Polished set
2004-2006 1200C	17537-96A	17579-95B	N/A		17551-04	17581-04	Chrome
2004-2005 883R, 1200R	17614-98A 17614-98B	17579-95A 17579-95B	N/A		17527-04		Silver set
2006 883R	17614-98A 17614-98B	17579-95A 17579-95B	N/A		17655-05		Silver bottom, black top
2006 1200R	17645-06		N/A		17655-05		Black bottom, black top
2007-2009 883, 883C, 883L, 1200N	17532-07	17579-07	N/A		17501-04	17581-04	Polished set
2007-2009 1200C, 1200L, XL50	17537-07	17579-07	N/A		17551-04		Chrome set
2007-2009 883R, 883N	17614-07	17579-07	N/A		17655-05		Silver bottom, black top
2007-2009 1200R	17645-07		N/A		17655-05		Black set
2009 XR1200	17590-08		N/A		17585-08		Silver set
2010-2016 883C, 883L, 1200N, 1200X	17532-07A	17579-07A	N/A		17501-04	17581-04	Polished set
2010-2016 1200C, 1200L, 1200CP, 1200V, 1200T	17537-07A	17579-07A	N/A		17551-04		Chrome set
2010-2014 883R, 883N, 1200CP, 1200CA, 1200CB	17614-07A		N/A		17655-05	17581-04	Silver bottom, black top
2010 XR1200	17590-08A		N/A		17585-08		Silver set
2010-2013 XR1200X	17591-10		N/A		17615-10		Black set
2015-2016 883R, 883NN, 1200CP, 1200CA, 1200CB	17598-07A		N/A		17655-05		Silver bottom, black top

Pushrod lean angle on 91-up engines. The lifters are square to the lifter bore but they're not quite square to the rocker arm slot for the pushrod.
There is a slight lean angle between the lifters and the rocker arms as shown below.
The pushrod tubes line up square with the lifter blocks and hide the lean angle of the pushrods.
In the pics below, a inside bore gauge is lined up app. straight from the lifter bore to the rocker arm slot for the pushrod.
This is the app. lean angle of the pushrods between the lifter and the rocker arm.
The pushrod angle also changes as the rocker arm moves thru it's arc while the valve is opened and closed. ¹⁾

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