Hastings 3.268"/83.00 mm Bore +.010"/.25 mm Over Size, 4-Cylinder Ring Set with 2.00 mm Top Ring, 1.75 mm Second Ring and a First Oil Ring is 2.00 mm.
This Hastings 4-Cylinder Ring Set has a top ring manufactured from ht ductile iron with chrome surface treatment, a second ring manufactured from ductile iron with phosphate ring surface treatment. The 1st oil control ring is manufactured of ht iron with a chrome ring surface treatment.

Application Summary:

Year Make/Model
2013 Mercedes-Benz GLK250
2013 Mercedes-Benz Viano
Attributes
1st Oil Groove 2.00
1st Oil Ring Material HT IRON
1st Oil Ring Surface Treatment CHROME
2nd Groove 1.75
2nd Ring Surface Treatment PHOSPHATE
Alternate Part Number 2D7440.25
California Proposition 65 No
Engborein 3.268
Engboremetric 83.00
Hazardous Material Code N
Life Cycle Status Code Available to Order
NAFTA Preference Criterion Code B
SDR Required Flag N
Top Groove 2.00
Top Ring Surface Treatment CHROME
GTIN 00075538385592