Ring Set, Piston (std) for 90~95 ZR-1 LT5.  A Ring Set is defined as; 1ea oil control ring, 1ea 2nd scraper ring and 1ea top compression ring, as needed per piston. Eight (8) ring sets are required per engine.

NOTE: This is a USED, GM OEM part, manufactured by Mahle/Goetz for GM.