Marine Gearbox
The gearbox on a marine diesel engine has three purposes: to reduce the maximum speed at which the propeller rotates; to enable both forward and astern rotation of the propeller; and to enable the propeller to remain stationary when the engine is running. Unlike a car gearbox, there is usually only one forward gear and the clutch is contained within the gearbox.
Because modern engines run at too high a speed for normal operation of the propeller, gearing reduction is required. The reduction gear ratio is usually between 2:1 and 3:1, with different manufacturers often using differing ratios.
Because modern engines run at too high a speed for normal operation of the propeller, gearing reduction is required. The reduction gear ratio is usually between 2:1 and 3:1, with different manufacturers often using differing ratios.
Experience the unmatched quality and performance of the Kanzaki KM4A-2, 2.14 transmission. Designed with advanced features and built with precision, this transmission offers a perfect blend of power, efficiency, and reliability for your boating adventures. The Kanzaki KM4A-2, 2.14 transmission is your ideal companion for reliable and powerful boating. Built with attention to detail and high-quality materials, it ensures a smooth and enjoyable experience on the water. Elevate your boating adventures with the durability and performance of the Kanzaki KM4A-2, 2.14 transmission.
The Kanzaki KM40A, 2.45 transmission is your ideal companion for reliable and powerful boating. Built with attention to detail and high-quality materials, it ensures a smooth and enjoyable experience on the water. Elevate your boating adventures with the durability and performance of the Kanzaki KM40A, 2.45 transmission. Experience the unmatched quality and performance of the Kanzaki KM40A, 2.45 transmission. Designed with advanced features and built with precision, this transmission offers a perfect blend of power, efficiency, and reliability for your boating adventures.
Perfect for new installations as well! If you are putting in a new Yanmar, Cummins Caterpillar, John Deere, Detroit Diesel or any other marine engine look seriously at these units. The 8 Degree down angle and 5.75 inch drop down, keeps the front of the motor down for tight installations.
Reverse reduction marine transmission with hydraulically actuated multi-disc clutches. ZF 25 Gearbox is suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Fully works tested, reliable and simple to install. Lightweight and robust aluminum alloy casing (sea water resistant). Case hardened and precisely ground gear teeth for long life and smooth running.
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. ZF 30 M gearbox is suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications. Output shaft thrust bearing designed to take maximum propeller thrust. Fully works tested, reliable, sea water resistant, simple to install, compact and space saving design.
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. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable. Suitable for twin engine installations (same ratio and torque capacity in ahead or astern mode).
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. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable. Replaceable oil filter cartridge.Manufacture, design and quality control standards comply with ISO 9001.
ZF / Hurth is one of the largest manufacturers of gearboxes. The company operates a total of 121 production companies in 26 countries different countries. We can deliver a ZF / Hurth ZF 68 gearbox with 2 years warranty. Fully works tested, reliable and simple to install, Compatible with all types of engines and propulsion systems, including waterjets and surface- piercing propellers, as applicable.
The Kanzaki KM50A, 2.43 transmission is your ideal companion for reliable and powerful boating. Built with attention to detail and high-quality materials, it ensures a smooth and enjoyable experience on the water. Elevate your boating adventures with the durability and performance of the Kanzaki KM50A, 2.43 transmission. Designed with advanced features and built with precision, the KMH50A transmission offers a perfect blend of power, efficiency, and reliability for your boating adventures.
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. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable.
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, 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 water jets and surface piercing propellers, as applicable.
Robust design also withstands continuous duty in workboat applications. Compatible with all types of engines and propulsion systems, including water jets and surface piercing propellers, as applicable. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc.
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, 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 water jets and surface piercing propellers, as applicable.
Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable.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.
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. Suitable for high performance applications in luxury motoryachts, sport fishers, express cruisers etc.
Compatible with all types of engines and propulsion systems, including water jets and surface piercing propellers, as applicable. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable. Suitable for twin engine installations (same ratio and torque capacity in ahead or astern mode).
Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications.3 shaft, reverse reduction transmission with hydraulic clutch mounted on the input shaft and another one mounted on the reverse shaft. Input drive on opposite side to output drive.
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications. Fully works tested, reliable and simple to install.
New KM2P-1 marine transmission. Manufactured by Kanzaki in Japan. Gear ratio is 2.62:1. Comes painted Yanmar gray. Was originally installed onto a Yanmar engine and removed by the factory. Does not come with any accessories. This transmission full warranty support. Commonly used on Yanmar 2GM20, 2YM20, and 3YM30 marine diesel engines.
The Kanzaki KM35A-2 is a compact, mechanical angle servo cone clutch marine transmission designed for Yanmar diesel engines. It features a lightweight design (approx. 13 kg) with a 7-degree down-angle output, commonly used in sailboats and small pleasure craft with reduction ratios of 2.33 or 2.64, and requires SAE #20/#30 oil.
Kanzaki KM4A-2 Marine Transmission Ratio 2.63:1- Gearbox New (KM4A-2)
Experience the unmatched quality and performance of the Kanzaki KM4A-2, 2.14 transmission. Designed with advanced features and built with precision, this transmission offers a perfect blend of power, efficiency, and reliability for your boating adventures. The Kanzaki KM4A-2, 2.14 transmission is your ideal companion for reliable and powerful boating. Built with attention to detail and high-quality materials, it ensures a smooth and enjoyable experience on the water. Elevate your boating adventures with the durability and performance of the Kanzaki KM4A-2, 2.14 transmission.
Kanzaki KMH40A Marine Transmission Ratio 2.45:1- Gearbox New (KMH40A)
The Kanzaki KM40A, 2.45 transmission is your ideal companion for reliable and powerful boating. Built with attention to detail and high-quality materials, it ensures a smooth and enjoyable experience on the water. Elevate your boating adventures with the durability and performance of the Kanzaki KM40A, 2.45 transmission. Experience the unmatched quality and performance of the Kanzaki KM40A, 2.45 transmission. Designed with advanced features and built with precision, this transmission offers a perfect blend of power, efficiency, and reliability for your boating adventures.
Kanzaki KMH61A Marine Transmission Ratio 2.04:1- Gearbox New (KMH61A)
Perfect for new installations as well! If you are putting in a new Yanmar, Cummins Caterpillar, John Deere, Detroit Diesel or any other marine engine look seriously at these units. The 8 Degree down angle and 5.75 inch drop down, keeps the front of the motor down for tight installations.
ZF 25 Marine Transmission Ratio 2.8 : 1 (HSW 250 H) Gearbox New (ZF 25)
Reverse reduction marine transmission with hydraulically actuated multi-disc clutches. ZF 25 Gearbox is suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Fully works tested, reliable and simple to install. Lightweight and robust aluminum alloy casing (sea water resistant). Case hardened and precisely ground gear teeth for long life and smooth running.
ZF 30M Marine Transmission Ratio 2.7 : 1 Gearbox New (ZF 30M)
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. ZF 30 M gearbox is suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications. Output shaft thrust bearing designed to take maximum propeller thrust. Fully works tested, reliable, sea water resistant, simple to install, compact and space saving design.
ZF 25A Marine Transmission Ratio 2.8 : 1 HSW250A Gearbox New ( ZF 25A)
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. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable. Suitable for twin engine installations (same ratio and torque capacity in ahead or astern mode).
ZF 45A Marine Transmission Hurth HSW450A Gearbox New (ZF 45A)
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. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable. Replaceable oil filter cartridge.Manufacture, design and quality control standards comply with ISO 9001.
ZF 68 Marine Transmission 63 Hurth HSW630H1 Gearbox New (ZF 68)
ZF / Hurth is one of the largest manufacturers of gearboxes. The company operates a total of 121 production companies in 26 countries different countries. We can deliver a ZF / Hurth ZF 68 gearbox with 2 years warranty. Fully works tested, reliable and simple to install, Compatible with all types of engines and propulsion systems, including waterjets and surface- piercing propellers, as applicable.
Kanzaki KMH50A Marine Transmission Ratio 2.43:1- Gearbox New (KMH50A)
The Kanzaki KM50A, 2.43 transmission is your ideal companion for reliable and powerful boating. Built with attention to detail and high-quality materials, it ensures a smooth and enjoyable experience on the water. Elevate your boating adventures with the durability and performance of the Kanzaki KM50A, 2.43 transmission. Designed with advanced features and built with precision, the KMH50A transmission offers a perfect blend of power, efficiency, and reliability for your boating adventures.
ZF 68A Gearbox Marine Transmission 2.0:1 Hurth HSW630A New (68A)
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. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable.
ZF 85A Gearbox Marine Transmission 2.0:1 Hurth HSW800A 80A New (85A)
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, 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 water jets and surface piercing propellers, as applicable.
ZF 220A Gearbox Marine Transmission 2.0:1 NEW (220A)
Robust design also withstands continuous duty in workboat applications. Compatible with all types of engines and propulsion systems, including water jets and surface piercing propellers, as applicable. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc.
ZF 85A Gearbox Marine Transmission 2.5:1 Hurth HSW800A 80A NEW (85A)
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, 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 water jets and surface piercing propellers, as applicable.
ZF 325-1A Gearbox Marine Transmission 1.733:1 24V Down-Angle NEW (325-1A)
Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable.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.
ZF 325-1 Gearbox Marine Transmission 2.957:1 Mech Shift VKE 4011S NEW (ZF 325-1)
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. Suitable for high performance applications in luxury motoryachts, sport fishers, express cruisers etc.
ZF 286A Gearbox Marine Transmission 1.962:1 Mech Shift CFR SAE 2 Down-Angle NEW (ZF 286A)
Compatible with all types of engines and propulsion systems, including water jets and surface piercing propellers, as applicable. Smooth and reliable hydraulic shifting with control lever for attachment of push-pull cable. Suitable for twin engine installations (same ratio and torque capacity in ahead or astern mode).
ZF 280-1 Gearbox Marine Transmission 2.227:1 Mech Shift NEW (ZF 280-1)
Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications.3 shaft, reverse reduction transmission with hydraulic clutch mounted on the input shaft and another one mounted on the reverse shaft. Input drive on opposite side to output drive.
ZF 280-1 Gearbox Marine Transmission 1.719:1 Mech Shift NEW (ZF 280-1)
Reverse reduction marine transmission with mechanically actuated multi-disc clutches. Suitable for high performance applications in luxury sailboats, motoryachts, fishing boats, etc. Robust design also withstands continuous duty in workboat applications. Fully works tested, reliable and simple to install.
Kanzaki KM2P-1 Marine Transmission Ratio 2.62:1- Gearbox New (KM2P-1)
New KM2P-1 marine transmission. Manufactured by Kanzaki in Japan. Gear ratio is 2.62:1. Comes painted Yanmar gray. Was originally installed onto a Yanmar engine and removed by the factory. Does not come with any accessories. This transmission full warranty support. Commonly used on Yanmar 2GM20, 2YM20, and 3YM30 marine diesel engines.
Kanzaki KM35A-2 Marine Transmission Ratio 2.33:1 and 2.64 : 1- Gearbox New (KM35A-2)
The Kanzaki KM35A-2 is a compact, mechanical angle servo cone clutch marine transmission designed for Yanmar diesel engines. It features a lightweight design (approx. 13 kg) with a 7-degree down-angle output, commonly used in sailboats and small pleasure craft with reduction ratios of 2.33 or 2.64, and requires SAE #20/#30 oil.
