Table of Contents
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EVO: Engine Mechanicals
Rocker Box
Sub Documents
1986-Up Sportster Rocker Box Part Numbers | ||||||
Year Model | Lower Box Part# | Lower Box Casting# | Middle Spacer Part# | Middle Spacer Casting# | Upper Cover Part# | Upper Cover Casting# |
1986-1988 All | 17532-86 | 17554-86 | 17533-86 | 17555-86 | 17501-86 | 17556-86 |
Notes: | ||||||
1989 All | 17532-86A | 17554-86A | 17533-86A | 17555-86A | 17501-86A | 17556-86A |
Notes: | On L89 lower boxes, Click Here to view TSB M-984 regarding sealing area around middle spacer. | |||||
1990 All | 17532-86A | 17554-86A | 17533-86B | 17501-86A | 17556-86A | |
Notes: | Polished set. | |||||
1991 All | 17532-86A | 17554-86A | 17533-89 | 17501-86A | 17556-86A | |
Notes: | ||||||
1992-1994 All | 17532-86A 17532-86E | 17554-86A | 17533-90 | 17555-90 | 17501-86A 17501-86B | 17556-86A 17581-95 |
Notes: | Polished set. | |||||
1995-2003 All except 883R, 1200C, 1200S) | 17532-86B 17532-86E | 17579-95 | 17533-90A | 17580-95 | 17501-86B | 17581-95 |
Notes: | Polished set. | |||||
1996-2003 1200C | 17537-96 17537-96C | 17579-95 17579-95C | 17538-96 | 17580-95 | 17551-96 | 17581-95 |
Notes: | Chrome set. | |||||
1998-2003 1200S | 17614-98 17614-98C | 17579-95 17579-95C | 17533-90A | 17580-95 | 17527-98 | 17581-95 |
Notes: | Silver powder coated set. | |||||
2002-2003 883R | 17532-86B 17532-86E | 17579-95 | 17535-02 | 17501-86B | ||
Notes: | Polished set. | |||||
2004-2006 883, 883C, 883L | 17532-86C 17532-86E | 17579-95B | N/A | 17501-04 | 17581-04 | |
Notes: | Polished set. | |||||
2004-2006 1200C | 17537-96A 17537-96C | 17579-95B 17579-95C | N/A | 17551-04 | 17581-04 | |
Notes: | Chrome. | |||||
2004-2005 883R, 1200R | 17614-98A 17614-98B 17614-98C | 17579-95A 17579-95B 17579-95C | N/A | 17527-04 | ||
Notes: | Silver powder coated set. | |||||
2006 883R | 17614-98A 17614-98B 17614-98C | 17579-95A 17579-95B 17579-95C | N/A | 17655-05 | ||
Notes: | Silver powder coated bottom, black powder coated top. | |||||
2006 1200R | 17645-06 17645-06A | N/A | 17655-05 | |||
Notes: | Black powder coated set. | |||||
2007-2009 883, 883C, 883L, 1200N | 17532-07 | 17579-07 | N/A | 17501-04 | 17581-04 | |
Notes: | Polished set. | |||||
2007-2009 1200C, 1200L, XL50 | 17537-07 | 17579-07 | N/A | 17551-04 | ||
Notes: | Chrome set. | |||||
2007-2009 883R, 883N | 17614-07 | 17579-07 | N/A | 17655-05 | ||
Notes: | Silver powder coated bottom, black powder coated top. | |||||
2007-2009 1200R | 17645-07 17645-07A | N/A | 17655-05 | |||
Notes: | Black powder coated set. -07A is wrinkle black powder coat. | |||||
2009 XR1200 | 17590-08 | N/A | 17585-08 | |||
Notes: | Silver powder coated set. | |||||
2010-2016 883C, 883L, 1200N, 1200X | 17532-07A | 17579-07A | N/A | 17501-04 | 17581-04 | |
Notes: | Polished set. | |||||
2010-2016 1200C, 1200L, 1200CP, 1200V, 1200T | 17537-07A | 17579-07A | N/A | 17551-04 | ||
Notes: | Chrome set. | |||||
2010-2014 883R, 883N, 1200CP, 1200CA, 1200CB | 17614-07A | N/A | 17655-05 | 17581-04 | ||
Notes: | Silver powder coated bottom, black powder coated top. | |||||
2010 XR1200 | 17590-08A | N/A | 17585-08 | |||
Notes: | Silver powder coated set. | |||||
2010-2013 XR1200X | 17591-10 | N/A | 17615-10 | |||
Notes: | Black set. | |||||
2015-2016 883R, 883NN, 1200CP, 1200CA, 1200CB | 17598-07A | N/A | 17655-05 | |||
Notes: | Silver powder coated bottom, black powder coated top. |
Rocker Box Gaskets
Top cover gaskets
91-03 | 17353-89C | Rocker cover gasket (includes cutouts for the breather to fit into). Gasket 17353-89B also usable. No breather seal required. |
04-06 | 17353-89C | Rocker cover gasket (includes cutouts for the breather to fit into). Only use -89C gasket. No breather seal required. See TT#253. |
07-16 | 17362-07 | Rocker cover gasket (does not include cutouts for the breather to fit into). 17393-07 breather seal (required with rocker cover gasket 17362-07) |
Pushrods
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)
1)
Tomcatt of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074861&page=3