# 991607 Flange Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta flange screw marked M10X50, weighing 0.041 kg and listed for 35 applications across the IPS and D series. Order it on the marked thread size: the neighbouring flange screw 991608 is marked M12x50 yet carries a lower published weight of 0.023 kg, so the published figures do not rank with the thread sizes and cannot be used to tell the two apart.

## 🚤 Compatibility

-   **Engine Family:** IPS, D

Full model list at the end of this description.

## ⚙️ Key Features

-   Marked M10X50
-   0.041 kg
-   35 applications across the IPS and D series
-   Order by the marked thread size, not by weight
-   4 used per assembly

## 🔌 Function

Clamps a joint with an integral flanged head that spreads the load over the mating face without a separate washer.

## ⚠️ Common Signs of Failure

-   Joint working loose, weeping or fretting at the flange face
-   Thread stripped, stretched or pulled
-   Flange face under the head bruised, dished or corroded
-   Head drive recess rounded out

## 🛠️ Service Notes

-   Check the thread marking on the old screw before ordering — the M12x50 screw 991608 sits next to this one in the range and the published weights run the wrong way round to be any help

## 📦 Condition

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

## 🔎 Full Model Compatibility

Typically suits:

-   Volvo Penta D13C2-B MP, D13C2-A MP, D13C4-A MP, D13B-L MP, D13B-G MP, D13B-K MP, D13B-C MP, D13C6-A MP, D13C4-B MP, D13C5-B MP, D13C5-A MP, D13C7-B MP, D13C8-B MP
-   Volvo Penta D11C2-A MP, D11C4-A MP, D11B4-A MP, D11B2-A MP, D11A-C MP, D11A-D MP, D11A-E MP
-   Volvo Penta D8A2-A MP, D8A4-A MP, D8A8-A MP
-   Volvo Penta IPS15-C, IPS15-B, IPS15-A
-   Volvo Penta IPS2-C, IPS2-A, IPS2-B
-   Volvo Penta IPS20-D, IPS20-E
-   Volvo Penta IPS3-C, IPS3-A
-   Volvo Penta IPS30-E, IPS30-D

## Details

- **Price:** 40.89 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 40.89 AUD | In stock |

## Images

- 991607 Flange Screw | Genuine Volvo Penta Part
- 991607 Flange Screw | Genuine Volvo Penta Part - photo 2 of 2

---

> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/991607-flange-screw-genuine-volvo-penta)
> Updated: 2026-09-19