Hynautic H-21 Hydraulic Steering Helm Pump - Used

Hynautic H-21 hydraulic steering helm pump, stamped H-21, serial 122193, with P / R / S ports as used on Hynautic constant-pressure marine hydraulic steering systems (now supported under Dometic / SeaStar Solutions).

Application: main or auxiliary helm station on inboard, sportfish, commercial, and larger outboard-powered vessels running a Hynautic hydraulic steering system. Specific vessel and cylinder application is not verified.

Condition: used, untested take-out. Housing and top plate intact with shop handling marks; shaft shows surface oxidation. Three mounting studs and three port fittings installed as pictured. No pressure, leak, or rotation test has been performed. Shaft nut, key, bezel, wheel, and mounting hardware are not included. Unit will be drained and ports capped before shipping.

Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase.

Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.