For Floorboards on

Note: 87-06 Softails require 981623 18mm O2 sensor plugs

Thin style

Fits: > 48-66 Panhead

020" thick stainless spring steel base covered with a

Hasting Rings Pan/Shovel 74" +.020 Tändstift For Floorboards onStd cyl. bore: 3. 4375" (87. 312mm). 1st ring: 1. 6mm. 2nd ring: 1. 6mm. oil ring: 4. 75mm. Tech tip: Piston grooves vs piston rings. It's not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings, the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3 piece