2548865 3862823 Volvo Penta DPH-A Drive Unit 1.76 | Genuine Used Part

🔧 Product Description

Genuine Volvo Penta DPH-A Complete Aquamatic Drive - Part Number: 3862823

A genuine Volvo Penta DPH-A complete DuoProp sterndrive with a 1.76:1 overall reduction ratio.

The DPH-A was developed for high-torque Volvo Penta D4 and D6 common-rail diesel engines. It combines hydraulic steering, power trim, cone-clutch shifting and counter-rotating propellers in one heavy-duty Aquamatic drive assembly.

The 2548865 reference should be checked against the drive identification plate. The later complete-drive service reference associated with 3862823 is 23548865.

⚙️ Key Features

• Genuine Volvo Penta DPH-A Aquamatic drive
• Correct original part number 3862823
• Overall reduction ratio of 1.76:1
• Hydraulic steering and power-trim configuration
• Heavy-duty twin-propeller drive for D4 and D6 diesel engines

🚤 Compatibility

Commonly used on

• Volvo Penta DPH-A diesel Aquamatic installations
• Single- and twin-engine diesel sterndrive vessels

Typically suits

• Engine models:
• Volvo Penta D4-300 with DPH-A 1.76 drive
• Volvo Penta D6-310 with DPH-A 1.76 drive
• Volvo Penta D6-330 with DPH-A 1.76 drive
• D4 and D6 common-rail marine diesel packages specifically configured for the 1.76:1 DPH-A ratio
• HP Range: Approximately 300HP - 330HP for the documented 1.76 applications
• Engine Type: Volvo Penta four- and six-cylinder common-rail turbo-diesel
• Drive Type: Hydraulic-steering DuoProp Aquamatic sterndrive
• Gear Ratio: 1.76:1
• Year Range: Approximately 2004-2012, dependent on engine and drive serial number

🔌 Function

The DPH-A transfers the diesel engine's torque through the upper and lower bevel gears to two counter-rotating propellers. Its hydraulic steering system provides precise control, while the cone-clutch system engages forward and reverse gears.

⚠️ Common Signs of Failure

• Milky gear oil or water entering through the bellows or seals
• Delayed, slipping or incomplete forward or reverse engagement
• Gear or bearing noise during acceleration
• Oil leaking around the propeller shafts or upper housing
• Corrosion, cavitation or damage around the gearcase and steering components

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23548865 → Later replacement for 3862823
• 3862823 original DPH-A 1.76 complete-drive reference
• 3801121 Volvo Penta exchange-drive reference

OEM / Related Numbers

• 23548865
• 3862823
• 3801121
• 2548865 supplied inventory or identification reference
• 3808898 / 3594509 related universal-joint bellows kit
• 3588753 related exhaust bellows kit
• 3588745 / 3863206 related anode components

Aftermarket / Verified Equivalents

• Volvo Penta Exchange: 3801121
• Specialist remanufactured DPH-A 1.76 drive: 3862823 / 23548865
• Recmar: REC3808898 universal-joint bellows kit
• Recmar: REC23010 upper-unit seal kit
• Recmar: REC23018 lower-unit seal kit

📦 Condition

• Genuine used part
• Removed from running drive where applicable
• In good working condition unless otherwise stated