# 873220 Lock Nut | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta lock nut from the Steering group, weighing 0.023 kg and listed for five applications across the TSK, DPX, TAMD, KAD and KAMD series. The other lock nut on the same fitment is 873219. No thread size is published for either, so order by part number and by the position in the assembly rather than by weight. Screw 873218 sits on the same fitment.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta TSK DPX-C
-   Volvo Penta DPX-R
-   Volvo Penta TAMD42B
-   Volvo Penta KAD42B
-   Volvo Penta KAMD42B

-   **Engine Family:** TSK, DPX, TAMD, KAD, KAMD

## ⚙️ Key Features

-   0.023 kg
-   Five applications across TSK, DPX, TAMD, KAD and KAMD
-   No thread size published - order by number
-   The other lock nut here is 873219
-   2 used per assembly

## 🔌 Function

Locks onto the thread and holds its clamping load against vibration, so the joint cannot shake loose.

## ⚠️ Common Signs of Failure

-   Nut backing off, or found finger-loose
-   Locking feature no longer gripping the thread
-   Threads stripped, galled or corroded
-   Flats rounded off by a poorly fitting spanner

## 🛠️ Service Notes

-   Fit new lock nuts rather than reusing them once the locking feature has been through
-   The other lock nut here is 873219 and the matching screw is 873218 - confirm the position before ordering

## 📦 Condition

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

## Details

- **Price:** 7.25 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 7.25 AUD | In stock |

## Images

- 873220 Lock Nut | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/873220-lock-nut-genuine-volvo-penta)
> Updated: 2026-09-06