# 21289128 Screw | Genuine Volvo Penta Part

## 🔧 Product Description

A separately specified retaining screw used in the sensor and bracket installation containing parts 21289125 and 21289126.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta 3.0GXiC-J
-   Volvo Penta 3.0GXi-J

## ⚙️ Key Features

-   Correct factory thread and length
-   Not interchangeable with 21289127 without parts-parts list for your engine confirmation
-   Maintains secure sensor-bracket attachment
-   Engine type: Volvo Penta marine or industrial application

## 🔌 Function

Secures the sensor bracket or sensor body in the designated mounting position.

## ⚠️ Common Signs of Failure

-   Loose sensor bracket
-   Corrosion or seized screw
-   Incorrect screw length contacting an adjoining component
-   Broken fastener during servicing

## 🛠️ Service Notes

-   Clean the threads in the casting and check them for damage before fitting; a screw run into a dirty or pulled thread gives a false torque reading and will not hold its load
-   Tighten to the torque given in the workshop manual for your engine rather than by feel, and follow the specified sequence where the joint has one
-   Use the thread locking or sealing compound the manual calls for at that joint — some screws pass into oil, coolant or fuel space and have to seal as well as clamp
-   Renew any screw that is stretched, corroded in the shank, or has damaged threads or a rounded head, and never reuse one that was tightened by a stretch or angle-tighten procedure
-   A little marine-grade anti-seize helps later removal where the manual permits it, but keep it off threads that are meant to take a locking compound

## 🔄 Supersession & Cross Reference

### OEM / Related Numbers

-   21289125 - sensor
-   21289126 - bracket
-   21289127 - separate retaining screw

## 📦 Condition

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

## Details

- **Price:** 61.3 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 61.30 AUD | In stock |

## Images

- 21289128 Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21289128-screw-genuine-volvo-penta)
> Updated: 2026-10-17