# 20405706 Screw | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Timing Gear Casing Wear-Cover Screw - Part Number: 20405706

  

Genuine Volvo Penta screw used in pairs beside the timing-casing wear parts, O-rings and idler-gear access cover.

  

⚙️ Key Features

  

• Timing-casing internal cover or wear-part screw

• Two used in the applicable assembly

• Located beside wear parts 20405553 and O-rings 20459904

• Confirmed across the full D5/D7 engine family

• Requires clean threads and specified torque

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20405706 - current Volvo Penta timing-casing screw reference

  

OEM / Related Numbers:

  

• 20405553 - wear parts

• 20459904 - O-rings

• 20405605 - access cover

• 20555503 - idler gear

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D5/D7 timing-gear casings

  

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 dependent

  

🔌 Function

  

Retains the assigned cover or wear component inside the timing-gear casing.

  

Common signs of failure:

  

• Loose internal cover

• Damaged threads

• Oil leakage or component movement

• Rounded screw head

• Timing-casing wear from lost retention

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 0.59 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 0.59 AUD | In stock |

## Images

- 20405706 Screw | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20405706-screw-genuine-volvo-penta)
> Updated: 2026-07-29