# 852079 Lock Washer | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta lock washer from the Marine Propulsion group, weighing 0.050 kg and listed for 69 applications including MD, D, TMD, MS, BB and AD series engines.

## 🚤 Compatibility

-   **Engine Family:** MD, D, TMD, MS, BB, AD, TAMD

Full model list at the end of this description.

## ⚙️ Key Features

-   0.050 kg
-   69 applications across six engine series

## 🔌 Function

Locks the nut or bolt against rotation so vibration cannot slacken the joint.

## ⚠️ Common Signs of Failure

-   Fastener found slack on inspection
-   Tab already bent and straightened, or cracked at the fold
-   Washer flattened so it no longer springs
-   Corrosion between washer and mating face

## 🛠️ Service Notes

-   Lock washers are single use - fit a new one rather than bending the old tab back
-   The lighter lock washer 853160, at 0.009 kg, is the Drive unit 290 part and is not interchangeable with this one

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta 2003, 2003R, 2003R SOLAS, 120S, 120S-B, 740A, 2003TB, 2003TB SOLAS, 120SC, 120S-D, 120S-E, 2001AG, 2001B, 2001BG, 2001D, 2003D, 2003T, 2003TR, 2002AG, 2002B, 2002BG, 2002D, 2003B, 2003B SOLAS, 2003 SOLAS, 2001, 2002, 2001R
-   Volvo Penta MS2B-A, MS2B-L, MS2L-E, MS2B, MS2V, MS2A-D, MS2A-E
-   Volvo Penta MD5A, MD5B, MD5C
-   Volvo Penta AD31, AD31B
-   Volvo Penta MD11C, MD11D
-   Volvo Penta MD17C, MD17D
-   Volvo Penta MD2010-C, MD2010-D
-   Volvo Penta MD2020-C, MD2020-D
-   Volvo Penta MD2030-C, MD2030-D
-   Volvo Penta MD2040-C, MD2040-D
-   Volvo Penta MD22, MD22A
-   Volvo Penta MD6A, MD6B
-   Volvo Penta MD7B, MD7A
-   Volvo Penta TAMD31A, TAMD31B
-   Volvo Penta TMD31A, TMD31B
-   Volvo Penta BB740A
-   Volvo Penta D2002AG
-   Volvo Penta D2003AG
-   Volvo Penta MD30A
-   Volvo Penta MD31A
-   Volvo Penta MD67C
-   Volvo Penta TMD22A

## Details

- **Price:** 143.79 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 143.79 AUD | In stock |

## Images

- 852079 Lock Washer | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/852079-lock-washer-genuine-volvo-penta)
> Updated: 2026-09-19