# 955738 Hexagon Screw | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta hexagon screw of the early type for the 1.98:1 reverse gear ratio, 57 mm long, weighing 0.118 kg and listed for 20 applications across the MD, TMD and TAMD series. It supersedes 921707. Its late-type counterpart 955739 is 64 mm long for the same ratio, so both the build and the 57 mm length have to match.

## 🚤 Compatibility

Typically suits:

-   Volvo Penta MD100B
-   Volvo Penta TMD70C
-   Volvo Penta TAMD61A
-   Volvo Penta TAMD62A
-   Volvo Penta TMD121C
-   Volvo Penta TAMD71B
-   Volvo Penta TAMD72A
-   Volvo Penta TAMD72P-A
-   Volvo Penta TAMD72WJ-A
-   Volvo Penta TAMD70E
-   Volvo Penta TAMD71A
-   Volvo Penta TAMD102A
-   Volvo Penta TAMD102D
-   Volvo Penta TAMD121D
-   Volvo Penta TAMD122A
-   Volvo Penta TAMD122A/C
-   Volvo Penta TAMD122D
-   Volvo Penta MD100B-CC
-   Volvo Penta TAMD60C
-   Volvo Penta MD70C

-   **Engine Family:** MD, TMD, TAMD

## ⚙️ Key Features

-   Early type
-   For the 1.98:1 reverse gear ratio
-   57 mm long
-   0.118 kg
-   Supersedes 921707
-   L=57mm (Volvo assembly listing)

## 🔌 Function

Bolts two components together, clamping the joint through a plain hexagon head.

## ⚠️ Common Signs of Failure

-   Screw found loose or backed out at service
-   Hex flats rounded off by a slipping spanner
-   Thread stripped in the screw or in its tapping
-   Screw stretched or snapped at the shank
-   Oil weeping at the gearbox joint as clamp load is lost

## 🛠️ Service Notes

-   Confirm the ratio and the build before ordering - 955739 is the late type at 64 mm for the same 1.98:1 ratio, and 7 mm is all that separates them
-   The plain 57 mm screws in this run, 955530, 955538, 955565 and 955580, are not alternatives to the reverse-gear screw

## 🔄 Supersession & Cross Reference

### OEM Supersession Chain

-   955738 → Supersedes 921707

### OEM / Related Numbers

-   921707 earlier number superseded by this part

## 📦 Condition

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

## Details

- **Price:** 13.81 AUD
- **Vendor:** Volvo Penta
- **Type:** Fasteners & Fixings
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13.81 AUD | In stock |

## Images

- 955738 Hexagon Screw | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/955738-hexagon-screw-genuine-volvo-penta)
> Updated: 2026-09-06