# 20929924 Hex Socket Screw | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Unit-Injector Hex-Socket Retaining Screw - Part Number: 20929924

  

OEM fastening or load-distribution component used in the d16 electronic unit-injection system. It restores the specified thread, strength, length and clamping geometry required by the original assembly.

  

⚙️ Key Features

  

• OEM-calibrated fuel-delivery and spray characteristics

• Maintains cylinder balance, power and combustion quality

• Compatible with the original electrical and fuel connections

• Requires new seals and correct installation procedure

• Professional test/calibration verification is recommended

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20929924 (OEM catalogue reference)

  

OEM / Related Numbers:

  

• 3801263 Volvo Penta remanufactured unit injector

• 276948 injector O-ring/seal kit

• 21261987 injector washer

• 21168206 injector yoke

• 21344774 injector-yoke flange screw

• 983472 cable tie

• 8131393 injector retainer

• Delphi BEBE4D14101 / BEBE4D14001

• Related Volvo reference 20780666

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• D16 electronic unit-injection system

  

Typically suits:

  

• Engine models:

• TAD1650GE; TAD1650VE; Volvo D16 industrial derivatives

• HP Range: Approximately 550-750 HP, depending on engine rating

• Engine Type: 16 L six-cylinder electronically controlled unit-injected diesel

• Year Range: Approximately 2000s-2010s

  

🔌 Function

  

Provides the specified clamping, locating or load-distribution function so the connected assembly remains secure and aligned.

  

Common signs of failure:

  

• Hard starting, extended cranking or cylinder misfire

• Rough idle or cylinder imbalance

• Black, white or grey exhaust smoke

• Reduced power and increased fuel consumption

• Incorrect leak-off, spray pattern or calibration during testing

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 4.42 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 4.42 AUD | In stock |

## Images

- 20929924 Hex Socket Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20929924-hex-socket-screw-genuine-volvo-penta)
> Updated: 2026-08-16