# 20551749 Washer | Genuine Volvo Penta Part

## 🔧 Product Description

This genuine Volvo Penta washer is an OEM service component used in the Cooling-System Washer. It is manufactured to the original Volvo Penta dimensional, material and interface requirements for the documented Volvo Penta 5-litre TAD5 generator diesel application. Technical identification: Load-distribution or sealing washer used at the specified fastening/connection. In service, it distributes fastener load, controls spacing or provides the specified locking/sealing interface at the joint. Selection must be confirmed by OEM part number 20551749, the exact model/product number, serial number and installed assembly configuration.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TD720GE
-   Volvo Penta TAD550GE
-   Volvo Penta TAD551GE
-   Volvo Penta TAD720GE
-   Volvo Penta TAD730GE MECH
-   Volvo Penta TAD730GE EDC4
-   Volvo Penta TAD731GE MECH
-   Volvo Penta TAD731GE EDC4
-   Volvo Penta TAD750GE
-   Volvo Penta TAD751GE
-   Volvo Penta TAD520GE
-   Volvo Penta TAD530GE MECH
-   Volvo Penta TAD530GE EDC4
-   Volvo Penta TAD531GE MECH
-   Volvo Penta TAD531GE EDC4
-   Volvo Penta TAD532GE EDC4

-   **Engine Family:** TD, TAD

## ⚙️ Key Features

-   OEM part number 20551749
-   Technical distinction: Load-distribution or sealing washer used at the specified fastening/connection
-   Quantity varies by assembly, most commonly 9

## 🔌 Function

Distributes fastener load, controls spacing or provides the specified locking/sealing interface at the joint. Confirm dimensions, thread and strength class, inspect mating threads/contact faces and tighten to the Volvo Penta torque and locking specification.

## ⚠️ Common Signs of Failure

-   Coolant weeping at the joint the washer sits in
-   The fastener found loose, or the joint wet at service
-   Crusted or coloured coolant deposits around the fixing
-   On removal, the washer flattened, cracked or corroded through

## 🛠️ Service Notes

-   Check you are fitting the same type of washer that came out — plain, hardened, sealing and locking washers are not interchangeable, and the wrong one either fails to seal or fails to hold
-   Treat sealing washers on fuel, oil and coolant unions as single-use; they seal by deforming onto the faces, so a used one will not seal reliably a second time
-   Clean the seating faces and make sure the washer sits flat and square, fully under the head or nut, before tightening — a washer trapped on a chamfer or edge will crush unevenly
-   Tighten the fastener to the figure given in the workshop manual for your engine, and account for every washer on reassembly so none is left loose inside a housing or the engine bay

## 📦 Condition

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

## Details

- **Price:** 2.02 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2.02 AUD | In stock |

## Images

- 20551749 Washer | Genuine Volvo Penta Part

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/20551749-washer-genuine-volvo-penta)
> Updated: 2026-10-09