THIS RING SETS IS FOR PISTON DESIGNED TO FIT ONAN ENGINES WITH 3 1/4" STANDARD BORE THAT USE ONAN PART NUMBER 113-0310 .RING SET THIS HAS A .058" TOP RING FOR TYPE OF NEW PISTONS .THAT IS MOST OF YOUR B43 B48 AND LOTS OF YOUR P216, P218, P220 MODELS THAT HAVE HAD NEW PISTON RINGS PLEASE CHECK YOUR PART NUMBER BEFORE ORDERING . THESE ARE DESIGNED FOR EXTRA OIL CONTROL IN USED CYLINDER AND WILL FIT YOUR OEM PISTONS . PLEASE MEASURE YOUR OLD RINGS TO CONFIRM THESE ARE CORRECT, IF THEY ARE THICKER WE HAVE THAT STYLE ALSO IN OUR EBAY STORE OR MESSAGE US AND WE WILL DIRECT YOU TO THE CORRECT LISTING. NUMBERS WON'T HELP NEED MEASUREMENT OF YOUR OLD OIL CONTROL RING

NOTE: THESE PISTON RINGS ARE NOT MADE IN TAIWAN OR CHINA!!!

SHIPS FROM USA WITH A TRACKING NUMBER

THIS RING SET IS FOR LATE STYLE ONAN PISTON:

THE RINGS MEASURE:

TOP: .058" 1/16" OR 1.5MM

SECOND: .058" 1/16" OR 1.5MM

OIL RING: .125" 1/8" OR 3.0MM