UF11970 Sleeve-Piston-Ring Kit---Replaces PK109

Replaces number PK109

Models with 172 Engine

Fits: 800, 900, 801, 901, 4000-4 Cyl. Super Power Set

4 inch overbore for increased power autothermic pistons, chrome top rings
chrome steel segment oil rings

Set of 4---For 1 Engine