# 21252722 Flange Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine flange screw used to mount the seawater pump on Volvo Penta D1-30 and D2-55 marine diesel engines.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta D2-40
-   Volvo Penta D2-40B
-   Volvo Penta D2-40F
-   Volvo Penta D2-55
-   Volvo Penta D2-55B
-   Volvo Penta D2-55C
-   Volvo Penta D2-55D
-   Volvo Penta D2-55E
-   Volvo Penta D2-55F
-   Volvo Penta D2-50F
-   Volvo Penta D2-75
-   Volvo Penta D2-75B
-   Volvo Penta D2-75C
-   Volvo Penta D2-75F
-   Volvo Penta D2-60F
-   Volvo Penta D1-30
-   Volvo Penta D1-30B
-   Volvo Penta D1-30F

-   **Engine Family:** D
-   **HP Range:** 30-75 HP

## ⚙️ Key Features

-   Genuine Volvo Penta pump-mounting screw
-   Integrated load-distributing flange
-   Correct OEM length and strength grade
-   Suitable for wet marine-engine environments
-   Maintains pump alignment and sealing pressure
-   4 used per assembly

## 🔌 Function

The screw secures the seawater pump to the engine and maintains the clamping force required at the mounting and sealing surfaces.

## ⚠️ Common Signs of Failure

-   Corroded threads
-   Pump movement
-   Leakage at the pump mounting
-   Stretched shank
-   Inability to retain torque

## 🛠️ Service Notes

-   The integral flange spreads the load and forms the bearing face, so do not add a separate washer unless the workshop manual for your engine specifically calls for one
-   Clean the threads and the seating face before fitting — grit, paint or old sealant under the flange gives a false torque reading and the joint will slacken off in service
-   Where the flange is serrated it must bear directly on clean metal to grip; discard any screw with a deformed flange or damaged serrations rather than reusing it
-   Tighten to the torque and sequence given in the workshop manual for your engine, and treat the screw as single-use where the manual specifies an angle-tightened or stretch fastener
-   Check the thread in the receiving component at the same time; a pulled or corroded thread will not hold a new screw however carefully it is torqued

## 📦 Condition

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

## Details

- **Price:** 2.84 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 2.84 AUD | In stock |

## Images

- 21252722 Flange Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21252722-flange-screw-genuine-volvo-penta)
> Updated: 2026-10-11