Chrome plated special oil passage bolt with brass gasket used on 1963-1969 Big Twin Harley-Davidson

and give a larger surface area to mount against for more stability

Fits 1971-1976 Harley-Davidson Sportster models

This regulator will not fit on imported aftermarket generators

They resist taking a set

#SPC-041 1/2 ID x 7/8 Length Chrome Plated Steel Universal Spacer - 5 Pack Subcategory_Engine Tools Chrome plated special oil passageColony Machine #SPC 041 1 2 ID x 7 8 Length Chrome Plated Steel Universal Spacer. Size: 1 2 inside diameter x 7 8 inch length. 15 16" outside diameter. Bag of 5 pieces. Made in Ohio, USA.