23767598 Lower Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta Duoprop lower gear weighing 47.97 kg, listed for three applications and superseding part number 23475637. The Duoprop designation means it carries counter-rotating propeller shafts, so it is not interchangeable with a single-prop unit.

🚤 Compatibility

Typically suits:

• Volvo Penta 527
• Volvo Penta 577S
• Volvo Penta 627SV

⚙️ Key Features

• Duoprop lower gear, 47.967 kg
• Listed for three applications
• Supersedes 23475637
• Carries counter-rotating propeller shafts, so it is not interchangeable with a single-prop unit
• Marine Propulsion group

🔌 Function

Turns the drive through to the propeller shafts at the bottom of the drive, and in Duoprop form drives two counter-rotating propellers from the one gearset.

⚠️ Common Signs of Failure

• Whine or growl from the lower unit that changes with speed
• Vibration under way, or a shudder when the drive is loaded
• Water or emulsion in the drive oil
• Oil sheen on the water around the drive
• Pitted or chipped gear teeth and worn bearings found on strip-down

🛠️ Service Notes

• The Duoprop designation is not optional - a single-prop lower gear will not take these propellers
• Check the oil for water and the seals for damage before deciding how far the failure has gone
• At nearly 48 kg this needs proper lifting support during removal

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 23767598 → Supersedes 23475637

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging