17509-54A D-rings

#2 = rear intake

Everything is included to convert the stock hydraulic system to the dependability and performance of solid lifters

For rear chain drive models only

Fits: > 65-78 B

Hasting Rings Pan/Shovel 74" +.030 Styren 17509-54A D-ringsStd 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