# 20450736 Thermostat | Genuine Volvo Penta Part

## 🔧 Product Description

A genuine 82°C (180°F) Volvo Penta thermostat used in the thermostat housing and coolant-control circuit. It is supplied as an individual service component under part number 20450736 and is intended to restore the original fit, alignment, sealing, support or operating function of the specified assembly. This listing supplies the named part only; adjoining components shown in an parts list for your engine are serviced separately unless explicitly stated.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D5A-B TA
-   Volvo Penta D5A-T
-   Volvo Penta D5A-TA
-   Volvo Penta TD420VE
-   Volvo Penta D7A-B TA
-   Volvo Penta D7A-T
-   Volvo Penta D7A-TA
-   Volvo Penta D7C-B TA
-   Volvo Penta D7C-TA
-   Volvo Penta TAD620VE
-   Volvo Penta TAD650VE
-   Volvo Penta TAD660VE
-   Volvo Penta TAD750VE
-   Volvo Penta TAD420VE
-   Volvo Penta TAD760VE
-   Volvo Penta MD2010
-   Volvo Penta MD2010B

-   **Engine Family:** D, TD, TAD, MD

## ⚙️ Key Features

-   Designed for the thermostat housing and coolant-control circuit
-   Rated opening temperature: 82°C (180°F)
-   Engine type: Volvo Penta D5/D7 inline diesel engine family

## 🔌 Function

Regulates coolant flow according to temperature so the engine warms correctly and receives full cooling flow when required.

## ⚠️ Common Signs of Failure

-   The engine overheats or runs hotter during sustained load
-   The engine takes unusually long to reach normal operating temperature
-   Coolant temperature fluctuates during otherwise steady operation
-   The thermostat is stuck, corroded or mechanically damaged
-   Coolant leakage develops after the thermostat or housing has been disturbed

## 🛠️ Service Notes

-   Let the engine cool fully and drain coolant to below the housing before opening it, catching what comes out
-   Clean both faces of the housing without scoring them, and fit a new gasket or sealing ring with the thermostat — the old seal should never be reused
-   Fit the thermostat the right way round, with the sensing element towards the engine and any vent or bleed hole positioned as the original was, and check it is properly seated before the cover goes on
-   Pull the housing fasteners down evenly and to the figure in the workshop manual for your engine; an unevenly tightened cover distorts and weeps
-   Refill with the specified coolant, vent the system, then run up to temperature and check both for leaks and that the engine reaches and holds its normal running temperature

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   20450736 → Supersedes 888848

### OEM / Related Numbers

-   888848 earlier number superseded by this part
-   20450735 - Related coolant outlet pipe
-   20450737 - Related O-ring
-   20450738 - Related connector
-   20450739 - Related O-ring

### Aftermarket / Verified Equivalents

-   RECMAR: REC20450736
-   SLP: T-736
-   Crom Marine: 115436
-   OEM cross-reference: 888848

## 📦 Condition

-   Genuine Volvo Penta part
-   Brand new
-   Supplied in original or equivalent packaging

## Details

- **Price:** 169.93 AUD
- **Vendor:** Volvo Penta
- **Type:** Cooling System
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 169.93 AUD | In stock |

## Images

- 20450736 Thermostat | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20450736-thermostat-genuine-volvo-penta)
> Updated: 2026-10-09