For rear chain drive models only

Replaces OEM 2750-40 and late OEM 48301-40

dimensions: 18" long x 9 1/2" wide

Fits: > L37-E77 4-speed B

is available as MCS 904017

Hasting Rings Pan/Shovel 74" +.030 Styren For rear chain drive modelsStd 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