# 20797949 Hex. Socket Screw | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Hex. Socket Screw - Part Number: 20797949

  

OEM fastening or load-distribution component used in the cooling-fan clutch, adapter and fan mounting assembly. It restores the specified thread, strength, length and clamping geometry required by the original Volvo Penta assembly.

  

⚙️ Key Features

  

• Manufactured to the original Volvo Penta dimensional and material specification

• Maintains correct fit, alignment and service access in the designated assembly

• Designed for diesel-engine heat, vibration and operating-load exposure

• Direct replacement for a worn, damaged, missing or corroded original component

• Must be matched by part number, engine product and serial/configuration before installation

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 20797949 (OEM catalogue reference)

  

OEM / Related Numbers:

  

• 20405987; 20405988; 21034597; 22032282 fan adapters

• 20460331; 20464440; 21849998; 3887296; 3827487 fan references

• 21657224 flange

• 20593361 fan clutch

• 21200335 adapter

• 20713944 retaining screw

• 20460319 washer

• 990940 nut

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Cooling-fan clutch, adapter and fan mounting assembly

  

Typically suits:

  

• Engine models:

• D5A-B TA; D5A-T; D5A-TA; D7A-B TA; D7A-T; D7A-TA; D7C-B TA; D7C-TA; TD520GE; TAD520GE; TAD520VE; TAD530GE; TAD531GE; TAD532GE; TD720GE; TAD720GE; TAD720VE; TAD721GE; TAD721VE; TAD722GE; TAD722VE; TAD730GE; TAD731GE; TAD732GE; TAD733GE; TAD750VE; TAD760VE

• HP Range: Approximately 100-320 HP, depending on engine rating

• Engine Type: Four- and six-cylinder turbocharged diesel

• Year Range: Approximately late 1990s-2010s

  

🔌 Function

  

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

  

Common signs of failure:

  

• Fastener or retained component repeatedly loosens

• Damaged, stretched, corroded or stripped threads/contact surfaces

• Loss of clamping force or component alignment

• Fretting, movement or cracking around the secured joint

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 9.45 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 9.45 AUD | In stock |

## Images

- 20797949 Hex. Socket Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20797949-hex-socket-screw-genuine-volvo-penta)
> Updated: 2026-08-01