# 23964220 Thermostat Kit | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta Diesel Engine Thermostat Kit - Part Number: 23964220

  

A genuine cooling-system thermostat service package for compatible Volvo Penta diesel engines. It regulates coolant flow according to temperature so the engine reaches its intended operating range promptly and receives full cooling flow when required.

  

The thermostat rating, housing arrangement and included sealing items are serial-specific and are supplied under the complete kit number.

  

Kit Contents:

  

• 1 × genuine Volvo Penta thermostat service package - Part Number: 23964220

• Matched thermostat and installation items supplied under the complete kit number

  

⚙️ Key Features

  

• Genuine Volvo Penta cooling-system thermostat package

• Supports correct engine warm-up

• Controls coolant flow as operating temperature changes

• Suitable for thermostat sticking or temperature-control repair

• Requires model and serial confirmation

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 23964220 - Genuine Volvo Penta service reference

  

OEM / Related Numbers:

  

• 23964220

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

Commonly used on:

  

• Volvo Penta diesel engines

• Cooling systems specifying thermostat kit 23964220

  

Typically suits:

  

• Engine Type: Volvo Penta diesel

• Engine Models: Confirm by complete model and serial number

• Temperature Rating: Application-specific

• HP Range: Determined by the installed engine package

• Year Range: Cooling-system generation and serial-number controlled

  

🔌 Function

  

The thermostat restricts coolant flow during warm-up and opens progressively as temperature rises, helping maintain stable combustion, lubrication and cooling-system performance.

  

Common signs of failure or reasons for replacement:

  

• Engine overheats or runs hotter under load

• Engine takes unusually long to reach operating temperature

• Temperature fluctuates during normal operation

• Cabin-heater or calorifier performance changes where connected

• Thermostat is corroded, stuck or mechanically damaged

• Coolant leakage develops after thermostat-housing service

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 209.67 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 209.67 AUD | In stock |

## Images

- 23964220 Thermostat Kit | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/23964220-thermostat-kit-genuine-volvo-penta)
> Updated: 2026-07-30