# 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

## Details

- **Price:** 1533.75 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1533.75 AUD | In stock |

## Images

- 21328166 Adapter Kit | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21328166-adapter-kit-genuine-volvo-penta)
> Updated: 2026-07-30