21840806 Aftermarket Volvo Penta Trimming Cylinder DPH/DPR | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Starboard Power Trim Cylinder - Replaces Part Number: 21840806

New aftermarket starboard trim cylinder replacing Volvo Penta 21840806 and earlier 3888301. It is the four-port/right-side cylinder used on later DPH/DPR drive families.

⚙️ Key Features

• Starboard/right-side trim cylinder

• Four hydraulic-port configuration

• Cross-references earlier cylinder 3888301

• Used with port cylinder 22121309/3887960

• Serviceable with end nut 19088 and seal kit 22169

🧰 Kit / Assembly Contents

• 1 × Complete starboard trim cylinder - P/N 21840806

• 1 × Installed piston rod, piston and gland assembly

• 4 × Integrated hydraulic hose/port connections

• End-cap seals and internal piston seals - installed in the complete cylinder

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21840806 → Supersedes/cross-references 3888301

• Port-side companion 22121309 → Supersedes 21840807/3887960 where specified

OEM / Related Numbers:

• 3888301

• 22121309

• 21840807

• 3887960

• 19088

• REC22169

• 22093448

Aftermarket / Verified Equivalents:

• Recmar: REC21840806

• Poseidon/Pin Marine aftermarket starboard cylinder

• Aftermarket DPH-DPR four-port cylinder assemblies

🚤 Compatibility

Commonly used on:

• Volvo Penta DPH/DPR power-trim systems

Typically suits:

• Engine / Drive models:

• DPH-A, DPH-C, DPH-D, DPH-D1 and DPH-E

• DPR-A, DPR-B, DPR-C and DPR-D

• TSK DPH-A, TSK DPH-B and TSK DPH-E

• HP / Drive Range: Drive rating dependent

• System Type: Volvo Penta DPH/DPR dual hydraulic trim-cylinder system

• Year Range: Drive-serial dependent

• Serial / Component Identification: Starboard cylinder has four inlets/ports. Port cylinder is 22121309 with two inlets.

🔌 Function

The hydraulic trim cylinder converts pump pressure into linear movement to raise, lower and hold the sterndrive at the selected trim angle.

Common signs of failure / service requirement:

• Drive drifts down after trimming

• Hydraulic fluid leaks from the rod seal or hose ports

• Cylinder rod is bent, pitted or corroded

• Trim movement is uneven between port and starboard cylinders

• Cylinder binds or cannot complete its travel

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging