# 20405605 Cover | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Timing Gear Idler Access Cover - Part Number: 20405605

  

Genuine Volvo Penta cover fitted in the timing-gear casing beside the idler gear and pivot pin. It closes the access opening and is retained with set screw 20450795.

  

⚙️ Key Features

  

• Timing-gear casing access cover

• Located beside idler gear 20555503 and pivot pin 20758272

• Retained with locking-fluid-prepared set screw 20450795

• Protects the timing gears from contamination

• Sealing face and cover condition must be checked during service

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20405605 - current Volvo Penta timing-gear cover reference

  

OEM / Related Numbers:

  

• 20555503 - idler gear

• 20758272 - pivot pin

• 20405560 - hexagon screw

• 20450795 - set screw

• 20405706 - related timing-cover screws

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D5/D7 timing-gear casing assemblies

  

Typically suits:

  

• Engine / equipment models:

• TD520GE

• TAD530GE

• TAD531GE

• TAD532GE

• TD720GE

• TAD730GE

• TAD731GE

• TAD732GE

• TAD733GE

  

• Engine Type: Volvo Penta 5- and 7-litre industrial diesel

• Year / Serial Range: Timing-casing design and engine serial-number dependent

  

🔌 Function

  

Closes and protects the timing-gear casing opening beside the idler gear.

  

Common signs of failure:

  

• Oil leakage around the cover

• Cracked or distorted cover

• Loose locking screw

• Contamination entering the timing case

• Fretting at the cover seat

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 15.57 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 15.57 AUD | In stock |

## Images

- 20405605 Cover | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405605-cover-genuine-volvo-penta)
> Updated: 2026-07-30