Cylinder head for YAMAHA trim cylinders, 115–225 CV KIT_6G5-43821-01 PIECESBATEAUX.COM

Cylinder head for YAMAHA trim cylinders, 115–225 CV KIT_6G5-43821-01

Brand : Yamaha
Please note that this item can only be returned or exchanged under special conditions. Do not hesitate to contact us if you wish to have confirmation of the application.
€177.00
Shipped from 10/05/2026

Description Cylinder head for YAMAHA trim cylinders, 115–225 CV

Overview

The trim cylinder end cap is the end component of the YAMAHA hydraulic cylinder body that seals the cylinder and guides the rod. It incorporates the seal housings and maintains the integrity of the pressurized hydraulic circuit.

Technical Specifications

YAMAHA Trim Auxiliary Cylinder Head Kit 115-225Cv (1987-1996) with Seals

Includes:

  • 1x bare cylinder head 6G5-43821-01-00
  • 1x gasket 6E5-43822-01-00
  • 1x gasket 6E5-43865-09-00
  • 1x gasket 6G5-43861-00-00

We recommend verifying the engine serial number.

Recommended Conditions of Use

The trim actuator cylinder head must be installed after replacing the seals, which are not always included with the part (check the package contents). The cylinder body must be clean before installation to prevent leaks. Tighten the cylinder head to the torque specified by the manufacturer. After installation, check for leaks by operating the trim system first without load and then under load.

Technical Benefits

  • Robust construction ensuring resistance to working hydraulic pressures
  • Precision seal seats ensuring the hydraulic circuit is leak-free
  • Protection against marine corrosion thanks to suitable materials and surface treatments
  • Replacement eliminates hydraulic fluid leaks at the cylinder head
  • Guaranteed dimensional compatibility with the original cylinder body

Usage and Maintenance Tips

  • Replace the seals every time the cylinder head is removed, even if they appear to be in good condition
  • Thoroughly clean the seal seats before installation
  • Follow the manufacturer’s recommended torque specifications to prevent leaks or deformation
  • Check for hydraulic leaks after reassembly by operating the trim system
  • Inspect the cylinder head every time the boat is winterized

FAQ

How can I verify that the cylinder head is properly sealed after installation?

After installation, operate the trim system through complete cycles of raising and lowering. Inspect the cylinder head and rod area for any hydraulic oil seepage. Gently wiping the surface with a clean cloth can help detect even a micro-leak. If a leak is found, remove the cylinder head again and check the condition and position of the seals.

Can the original cylinder head mounting bolts be reused?

If the original bolts are in good condition (no corrosion, threads intact), they can generally be reused. It is recommended to clean the threads and apply a marine-grade threadlocker during reassembly. If there is any doubt about their condition, replace them with stainless steel bolts of the same size to prevent any failure.

All over the world, people who love the water choose Yamaha, because they've learned to rely on a reliable brand that combines pleasure, performance and safety. Behind the Yamaha name lies the experience of the most innovative technologies, recognized and appreciated by watersports enthusiasts and professionals alike. They all share one thing in common: the pleasure of sailing with Yamaha.

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