This is a complete set of six (6) Pro Dual Ring Pistons for all Mercury 2.4 Liter V6 2-Stroker Outboards with Standard Chrome plated or oversized Steel sleeves. Choice of Standard 3.375" Chrome, plus .015 Steel, and plus .030 Steel bore sizes.
 
Each Mercury Pro Piston Kit includes six (6) pistons, six (6) slip-fit wrist pins, twelve (12) piston rings, and twelve (12) wrist pin clips.
 
Before installing ensure your Sleeves; 1) are the correct bore and are nearly perfectly round, 2) have cross-hatching from a hone, to retain oil and lubricate for the pistons, 3) should not be glazed, which is a polished, shiny surface, and 4) should not be chipped, nicked, cut-through, or have worn spots.
 
Part Numbers
18-4550, 18-4550, 8667A22, 8667A42, 8667T42, 8667T42, 8667T42
 
Contact Mike Hill at STVracer@yahoo.com at 714-697-1716 with any questions or additional needs.