Hastings 3.150"/80.00 mm Standard Bore, 4-Cylinder Ring Set with 3.00 mm Top Ring, 3.00 mm Second Ring and a First Oil Ring is 5.00 mm.
This Hastings 4-Cylinder Ring Set has a top ring manufactured from grey iron with phosphate ring surface treatment, a second ring manufactured from grey iron with phosphate ring surface treatment. The 1st oil control ring is manufactured of grey iron with a phosphate ring surface treatment.

Application Summary:

Year Make/Model
1952-1955 Porsche 356
Attributes
1st Oil Groove 5.00
1st Oil Ring Material GREY IRON
1st Oil Ring Surface Treatment PHOSPHATE
2nd Groove 3.00
2nd Ring Surface Treatment PHOSPHATE
California Proposition 65 No
Engborein 3.150
Engboremetric 80.00
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 3.00
Top Ring Surface Treatment PHOSPHATE
GTIN 00075538149200