Hastings 4.055"/103.00 mm Standard Bore, 8-Cylinder Ring Set with 3.00 mm Top Ring, 2.00 mm Second Ring and a First Oil Ring is 3.00 mm.
This Hastings 8-Cylinder Ring Set has a top ring manufactured from stainless steel with nitrided ring surface treatment, a second ring manufactured from ductile iron with chrome ring surface treatment. The 1st oil control ring is manufactured of stainless steel with a nitrided ring surface treatment.

Application Summary:

Year Make/Model
2023 Chevrolet Silverado 2500 HD
2023 Chevrolet Silverado 3500 HD
2019-2023 Chevrolet Silverado 4500 HD
2009 GMC Savana 4500
2006 Hummer H1
Attributes
1st Oil Groove 3.00
1st Oil Ring Material STAINLESS STEEL
2nd Groove 2.00
2nd Ring Surface Treatment CHROME
Alternate Part Number 2D4845
California Proposition 65 No
Engborein 4.055
Engboremetric 103.00
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 NITRIDED
GTIN 00075538296607