# 21664109 Six Point Screw | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta TAD732GE and TAD733GE Cooling-System Six-Point Screw - Part Number: 21664109

  

A high-strength six-point screw used at schematic position 9 in the radiator and fan-shroud mounting system of Volvo Penta TAD732GE and TAD733GE EDC4 engines.

  

⚙️ Key Features

  

• EDC4 cooling-system fastener

• Schematic position 9

• Six-point drive head

• Correct OEM length, thread and strength grade

• Used in the radiator and shroud support assembly

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• Current OEM reference: 21664109

  

OEM / Related Numbers:

  

• 21664109

• 21883422 - Radiator

• 22080936 - Charge-air cooler

• 21663749 - Left fan shroud

• 21188784 / 21188785 - Mounting brackets

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

• TAD732GE EDC4

• TAD733GE EDC4

• Cooling-system schematic position 9

  

🔌 Function

  

The screw clamps the cooling-system support components together at the designed preload.

  

Common signs of failure or damage:

  

• Rounded or damaged drive head

• Stretched or corroded threads

• Fastener unable to hold torque

• Shroud or bracket movement

• Incorrect replacement grade causing loosening

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 2.18 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2.18 AUD | In stock |

## Images

- 21664109 Six Point Screw | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21664109-six-point-screw-genuine-volvo-penta)
> Updated: 2026-08-03