Rareelectrical Piston Kit 2.5L V6 Fits 2001-2018 Mercury 200Xs 859563T4

MERCURY 200 HP XS OPTIMAX 2.5L V6 (2001-2017) — 2507cc 2-STROKE DFI:
200XS OptiMax 2.5L V6 60° DFI 2-Stroke (2001-2006)
200XS OptiMax 2.5L V6 60° DFI 2-Stroke (2008-2017)

MERCURY 200 HP SPORT JET OPTIMAX 2.5L V6 (2001-2006) — 2507cc 2-STROKE DFI:
Sport Jet 200 OptiMax 2.5L V6 60° DFI 2-Stroke (2001-2006)

MERCURY 175 HP PRO XS OPTIMAX 2.5L V6 (2008-2018) — 2507cc 2-STROKE DFI:
Pro XS 175 OptiMax 2.5L V6 60° DFI 2-Stroke 20" (2008-2018)
Pro XS 175 OptiMax 2.5L V6 60° DFI 2-Stroke 15-Spline (2008-2017)

OEM PART NUMBERS:
Mercury: 859563T4 / 859563T04 (Starboard Piston STD)
Mercury: 859563T17 / 859563T17 (Starboard Piston, supersedes T4)
Mercury: 8M0065238 / 8M0065238 (Starboard Piston, current)
Mercury: 39-822321A12 / 39822321A12 (Piston Ring Set)

MERCURY 2.5L OPTIMAX STARBOARD PISTON KIT — STANDARD:
Starboard-side piston kit for Mercury 200XS, Sport Jet 200, and Pro XS 175 OptiMax 2.5L V6 DFI 2-stroke outboard engines (2001-2018). Standard bore 3.501" (88.93mm). The OptiMax 2507cc V6 uses a 3.501" bore × 2.65" stroke with a 60° V-angle and direct fuel injection (DFI). Kit includes piston, piston rings, wrist pin, and pin clips. Sold individually — 1 starboard piston kit per listing.

KIT INCLUDES:
Piston — 88.93mm (3.501") Diameter, Standard Bore
Piston Ring Set
Wrist Pin
Wrist Pin Clips (2)

ADDITIONAL CROSS-REFERENCES:
Product Type: Starboard Piston Kit
Position: Starboard
Oversize: Standard
Bore Diameter: 3.501" (88.93mm)
Stroke: 2.65" (67.3mm)
Displacement: 2507cc (2.5L)
Configuration: V6 60° 2-Stroke DFI OptiMax

⚠️ IMPORTANT: Verify OEM part number before ordering to ensure proper fitment.