# 21107112 Reversing Gear | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta HS63IV-A Reversing Gear 1.99:1 - Part Number: 21107112

  

Brand-new genuine Volvo Penta HS63IV-A hydraulic reversing gear with a reduction ratio of 1.99:1. This is the complete V-drive marine transmission, providing ahead, neutral and astern operation through hydraulically actuated multi-disc clutches. The ratio is fixed by the internal gear train and must match the vessel's propeller and driveline calculation.

  

⚙️ Key Features

  

• Transmission model: HS63IV-A

• Reduction ratio: 1.99:1

• Hydraulically actuated ahead and astern clutch packs

• Purpose-built marine output and mounting geometry

• Complete reversing-gear assembly; cooler, coupling, mounts and controls are separate

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21107112 - Current OEM complete-transmission reference

  

OEM / Related Numbers:

  

• Volvo Penta 21107112

• VOE21107112

• HS63IV-A

• Ratio 1.99:1

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta HS63IV-A marine transmission installations

  

Typically suits:

  

• Engine / drive models:

• HS63IV-A - 1.99:1 reduction

• Engine Type: Hydraulic V-drive marine transmission

• Year / Generation: HS63 transmission family

  

🔌 Function

  

Transfers engine torque to the propeller shaft, selects ahead/neutral/astern and reduces output speed by the specified ratio.

  

Common signs of failure:

  

• Delayed or slipping engagement

• Contaminated or burnt transmission oil

• Abnormal gear or bearing noise

• Oil leakage from seals or cooler connections

• Excessive vibration caused by coupling or internal wear

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 12670.9 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 12670.90 AUD | In stock |

## Images

- 21107112 Reversing Gear | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21107112-reversing-gear-genuine-volvo-penta)
> Updated: 2026-08-16