# 20713791 Timing Gear Cover | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D12 Timing Gear Cover - Part Number: 20713791

  

A genuine front timing-gear cover for Volvo Penta D12 engines. It replaces earlier cover 20512768, encloses the timing gear train and supports the specified seals and front-engine hardware.

  

⚙️ Key Features

  

• Current cover reference replacing 20512768

• Related Volvo reference 3169649

• Machined sealing and mounting faces match the D12 timing-gear plate

• Encloses idler gears, hubs and thrust components against contamination

• Supports the front sealing arrangement and adjacent sealing strip

• Must be tightened in sequence to avoid cover distortion and gear-contact issues

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20713791 - Current genuine Volvo Penta service reference

  

OEM / Related Numbers:

  

• 20512768 - Earlier timing-gear cover replaced by 20713791

• 3169649 - Related Volvo cover reference

• 8170561 / 21383522 - Timing-gear plate references

• 20489341 - Related seal

• 3828662 - Related cover

• 8170193 / 8170195 / 8170197 - Related idler gears

• 8170219 / 8170199 - Related hubs

• 8170220 / 3184865 - Related thrust washers

• 3184868 - Related bearing shield

• 20714247 - Related sealing strip

• 3835799 - Related timing-gear cover

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D12 industrial and generating-set engines

• TAD1240/TAD1241/TAD1242 and related D12 configurations using the documented timing case

  

Typically suits:

  

• Engine family: Volvo Penta D12 inline-six diesel

• Assembly: Front timing gear train

• Year range: Engine-generation and serial-number controlled

• Serial applicability: Confirm timing plate and sealing-strip version

  

🔌 Function

  

Encloses and protects the timing gears while supporting the engine's front sealing arrangement.

  

Common signs of failure or reasons for replacement:

  

• Engine oil leaks around the cover or front seal

• The cover is cracked or warped

• Mounting threads or sealing faces are damaged

• Timing gears contact the cover because of distortion

• Replacement is required after gear-train failure or impact

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 833.46 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 833.46 AUD | In stock |

## Images

- 20713791 Timing Gear Cover | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20713791-timing-gear-cover-genuine-volvo-penta)
> Updated: 2026-07-30