S&S cycle part number 90-4111, Rocker box gasket kit:
Fitting all 4-1/8 bore engines with the S&S die cast rocker boxes ( pictured below )
S&S cycle 111", 117" and 124" engines. Make sure. if buying for a Big Dog, you have the correct rocker boxes. 2005-early 2007 Big Dog used TP boxes. If you have the TP boxes, you'll need to order TP gaskets. These will cover all late model 2007-up Big dog, along with American Ironhorse and many other custom motorcycles, using the listed engines above.