# 20743680 Timing Gear Cover | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Timing Gear Cover - Part Number: 20743680

  

Brand-new genuine Volvo Penta timing gear cover for the front timing-gear housing used on selected D5-series industrial engines. It forms the outer closure of the gear casing and provides the correct factory mounting geometry for the timing drive, seals and adjoining components. This listing is for the cover only; gears, flange, PTO adaptor, O-rings and mounting hardware are separate unless expressly supplied.

  

⚙️ Key Features

  

• Direct genuine replacement for the original timing-gear casing cover

• Factory-machined mounting faces and threaded locations

• Supports correct timing-drive alignment and oil containment

• Designed for the D5A timing-gear housing architecture

• Cover-only supply; adjoining timing components are not included

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20743680 → Supersedes 20405735

• 20405735 - Earlier OEM reference

  

OEM / Related Numbers:

  

• Volvo Penta 20743680

• VOE20743680

• Timing-gear housing reference 20405740 / 20459901

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D5-series industrial engine timing-gear casing

  

Typically suits:

  

• Engine models:

• D5A-B TA

• D5A-A T where the catalogue calls for 20743680

• Engine Type: Inline six-cylinder Volvo Penta D5 industrial diesel

• Serial / Configuration: Confirm by engine product number and serial number before ordering

• Year Range: Production-era D5A applications; serial-controlled

  

🔌 Function

  

Closes and supports the front timing-gear casing, helping retain lubricating oil and maintain the designed alignment of the timing-drive components.

  

Common signs of failure:

  

• Oil leakage from the front gear casing

• Cracks or impact damage around mounting points

• Distorted sealing face causing repeated gasket leakage

• Damaged threads or loose adjoining hardware

• Abnormal timing-gear noise caused by loss of housing alignment

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 2710.21 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2710.21 AUD | In stock |

## Images

- 20743680 Timing Gear Cover | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20743680-timing-gear-cover-genuine-volvo-penta)
> Updated: 2026-08-01