This OHV Rocker Spindle washer set consists of 2 x copper washers and 2 x copper washers, as fitted on all 1948-55 OHV engines. They may also fit 56-59 Rocker Spindles.
For 1956-59 Engines: The Norton Spare Parts list for 1957 lists the same copper washer as used on the 48-55 type engines (that these washers are intended for) - but has one digit of the part number transposed, which may be a typo mistake. Unfortunately I no longer have a 56-59 OHV rockerbox in my posession, so cannot double check .. . but if you have this type of engine, email us at sales@racingvincent.co.uk and we will confirm dimensions.
Note: For this listing item - we supply 4 washers: 2 x copper and 2 x red fibre washers. In the 48-55 catalog, it is unclear if red fibre washers are fitted behind the copper washers - but I have seen both types of washers listed and fitted for this rocker spindle. In the past when I was regurly running one of these engines on the road, I found it useful to have a red fibre closest to the rockerbox casting and the thin copper washers outside those, which the domed nut tightened up against - because a red fibre washer on its own always got chewed by the nut, so the copper washers goes on the outside.