# 21680904 Pulley | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta D8 Engine Coolant-Pump Pulley - Part Number: 21680904

  

Drive pulley used on Volvo Penta D8 coolant-pump assemblies. It transfers belt rotation to the coolant pump and maintains the correct pulley offset and speed for the engine cooling system.

  

⚙️ Key Features

  

• Genuine Volvo Penta machined rotating component

• Factory tooth/groove geometry

• Correct diameter, offset and mounting interface

• Designed for the original bearing or belt load

• Serial-specific ratio or application

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21680904 (current OEM service number)

  

OEM / Related Numbers:

  

• VOE21680904

• Coolant pumps: 3801728, 21931911, 3801749 and 23033741

• Pump housings: 22329334 and 23002903

• Associated gasket: 979099

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta D8 marine and industrial engine cooling systems

  

Typically suits:

  

• Engine models / systems:

• D8A1-A MP

• D8 marine propulsion family

• TAD8 industrial and generator applications using pulley 21680904

  

• Engine Type: 7.7-litre inline-six turbocharged diesel

• Fitment Note: Confirm coolant-pump revision, groove profile and pulley offset

  

🔌 Function

  

Transfers rotational force while maintaining the designed speed ratio, alignment or engagement.

  

Common signs of failure:

  

• Tooth or groove damage

• Excessive backlash or run-out

• Abnormal noise or vibration

• Fretting at the mounting interface

• Misalignment or uneven wear

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 418.65 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 418.65 AUD | In stock |

## Images

- 21680904 Pulley | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21680904-pulley-genuine-volvo-penta)
> Updated: 2026-08-03