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ZF 63 A Marine Gearbox 2:1 Reduction Ratio

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Product Description

ZF Hurth

Product information

  • Reverse reduction marine transmission with hydraulically actuated multi-disc clutches
  • Suitable for high performance applications in luxury motoryachts, sport fishers, express cruisers etc
  • Robust design also withstands continuous duty in workboat applications
  • Fully works tested, reliable and simple to install
  • Design, manufacture and quality control standards comply with ISO 9001
  • Compatible with all types of engines and propulsion systems, including waterjets and surface- piercing propellers, as applicable 


  • Lightweight and robust aluminum alloy casing (sea water resistant)
  • Case hardened and precisely ground gear teeth for long life and smooth running
  • Output shaft thrust bearing designed to take maximum propeller thrust astern and ahead
  • B/W connection integrated with casing
  • Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable
  • Suitable for twin engine installations (same torque capacity in ahead or astern mode. Reduction Ratios in ahead or astern are very close.)
  • Replaceable oil filter cartridge
  • Compact, space saving design due to 8° down-angle and beveloid gear principle
  • "SUPERSHIFT" clutch control


  • Engine-matched dual stage coupling
  • SAE 3 and SAE 4 bell housings
  • Oil cooler complete with fittings and flexible oil hoses
  • Mounting brackets
  • Propeller shaft flange
  • Control cable bracket for mounting of push-pull cable to the control lever
  • Classification by all major Classification Societies on request
  • SAE «A» Power Take Off
  • Trolling valve (mechanical) for slow-speed drive
  • Thermostatic valve for better performance of trolling valve in cold sea water
  • Electric Trolling
  • Supershift (with Autotroll and Easidock)

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