21328166 Adapter Kit | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta HS68A / HS85AE Reverse Gear Adapter Kit - Part Number: 21328166

A genuine Volvo Penta reverse-gear connecting adapter kit used in selected D4 inboard installations with HS68A and HS85AE transmissions. The adapter establishes the correct engine-to-gearbox connection and supports the specified flexible coupling and roller-bearing arrangement.

Kit Contents:

• 1 x complete machined reverse-gear adapter assembly - Volvo Penta 21328166

• Internal bushes, retainers and mounting features are supplied as part of adapter kit 21328166 and are not separately listed in the public kit entry

⚙️ Key Features

• Genuine Volvo Penta reverse-gear adapter

• Used in selected HS68A and HS85AE connecting arrangements

• Matches D4 G-generation inboard installations

• Interfaces with the specified flexible coupling and roller kit

• Gearbox and flywheel-housing serial numbers must be checked

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 21328166 current Volvo Penta adapter-kit reference

OEM / Related Numbers:

• 21328166

• 22943740 and 22775503 related reverse-gear kits

• 23549677 related flexible coupling

• 21509615 related roller kit

Aftermarket / Verified Equivalents:

• No aftermarket equivalent

🚤 Compatibility

Commonly used on:

• D4 inboard reverse-gear connections

• HS68A / HS85AE gearbox installation

• Repower and flywheel-housing service

Typically suits:

• Engine models / drive models:

• D4-175I-G

• D4-230I-G

• D4-270I-G

• D4-300I-G

• D4-320I-G

• HS68A-A

• HS85AE-A

• HP Range: Approximately 175HP - 320HP

• Engine Type: Volvo Penta D4 inline 4-cylinder marine diesel with reverse gear

• Year Range: G-generation applications, approximately late 2010s onward

• Serial Range: Engine flywheel housing, reverse-gear model and flexible-coupling arrangement controlled; confirm both engine and gearbox serial numbers

🔌 Function

The adapter centres and connects the reverse gear to the engine flywheel housing while preserving the correct coupling spacing and shaft alignment.

Common signs replacement or overhaul is required:

• Transmission cannot be aligned to the engine housing

• Adapter bore or mounting face is damaged

• Repower uses a different HS gearbox

• Coupling or roller arrangement has changed

• Factory connecting-parts diagram specifies 21328166

📦 Condition

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging