21116405 Reversing Gear | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta HS45A-A Reversing Gear 2.43:1 - Part Number: 21116405

Complete genuine Volvo Penta HS45A-A hydraulic reversing gear with a 2.43:1 reduction ratio. This assembly is intended for matched shaft-drive installations and must retain the correct bell housing, input coupling, output flange and control arrangement.

⚙️ Key Features

• Volvo Penta HS45A-A transmission

• 2.43:1 reduction ratio

• Hydraulic clutch engagement

• Marine shaft-drive configuration

• ZF Hurth manufacturer identification confirmed

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21116405 - Current Volvo Penta complete assembly number

OEM / Related Numbers:

• 21116405

• 3807649 - Earlier or related HS45A-A assembly reference

• ZF Hurth HS45A-A 2.43:1

Aftermarket / Verified Equivalents:

• ZF Hurth: HS45A-A, 2.43:1

Associated Service Parts:

• 21116456 - Related oil-cooler kit; not included with the reversing gear

🚤 Compatibility

Confirmed transmission specification:

• Transmission Model: HS45A-A

• Reduction Ratio: 2.43:1

• Application Type: Volvo Penta marine shaft-drive installation

• Confirm propeller rotation, bell housing, input coupling, output flange, control arrangement and transmission serial number

🔌 Function

The transmission reduces engine speed to the required propeller-shaft speed and selects forward, neutral or reverse.

Common signs of failure:

• Delayed or harsh engagement

• Transmission slipping under load

• Bearing or gear noise

• Oil leakage

• Overheating

• Burnt or contaminated ATF

• Failure to remain in neutral

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging