# 991608 Flange Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta flange screw marked M12x50, weighing 0.023 kg and listed for 30 applications across the D and IPS series. Order it on the marked thread size — the M10X50 screw 991607 sits alongside it at a published 0.041 kg, so the weights run counter to the thread sizes and are no help in separating the two.

## 🚤 Compatibility

-   **Engine Family:** D, IPS

Full model list at the end of this description.

## ⚙️ Key Features

-   Marked M12x50
-   0.023 kg
-   30 applications across the D and IPS series
-   Order by the marked thread size, not by weight

## 🔌 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

-   Read the marking off the old screw rather than comparing weights with 991607 — the published figures for the two do not follow their thread sizes

## 📦 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 IPS2-C, IPS2-A, IPS2-B
-   Volvo Penta IPS20-D, IPS20-E
-   Volvo Penta IPS3-C, IPS3-A
-   Volvo Penta IPS30-E, IPS30-D
-   Volvo Penta D8A4-A MP

## Details

- **Price:** 50.96 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 50.96 AUD | In stock |

## Images

- 991608 Flange Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/991608-flange-screw-genuine-volvo-penta)
> Updated: 2026-09-20