Alpha Gen 2 Port Trim Cylinder Assembly
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Quicksilver Alpha Gen 2 Port Trim Cylinder Assembly
The Quicksilver / Mercury OEM Port Trim Cylinder Assembly (8M0118958) is a genuine factory hydraulic trim cylinder engineered for the port side of MerCruiser Alpha One Generation II stern drives. As a direct OEM replacement, it delivers exact fit, factory-specified performance, and the reliability that comes from being manufactured to original Mercury Marine standards. This part supersedes legacy part numbers 815935A7, 815935A3, and 8M0108277, consolidating coverage under a single updated assembly number.
The cylinder assembly is designed to restore proper power-trim function, ensuring smooth and consistent trimming of the drive unit under all operating conditions. Because fitment is application-specific, buyers should confirm compatibility by cross-referencing their engine serial number prior to ordering. Photos and descriptions provided via Mercury may not always reflect the exact appearance of the delivered component; the part number is the authoritative reference for correct fitment.
The assembly is covered by a one-year Mercury Marine and Quicksilver factory warranty against defects in materials and workmanship. Serialized drivetrain assemblies require dealer installation for warranty to remain valid.
Key Features
- Genuine OEM Mercury / Quicksilver replacement part — not aftermarket
- Designed for the port side of MerCruiser Alpha One Generation II stern drives
- Compatible with Alpha One Gen II 1991–1995 (s/n 0D469859 thru 0F679999) and 2015–2021 (s/n 2A480244 and up)
- Supersedes part numbers: 815935A7, 815935A3, 8M0108277
- Sold individually (priced and shipped as a single unit)
- One-year Mercury Marine factory warranty against defects and workmanship
- Confirm fitment via engine serial number before ordering
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