# 23370499 Primary Shaft | Genuine Volvo Penta Part

## 🔧 Product Description

Genuine Volvo Penta primary shaft from the Marine Propulsion group, listed at 2.654 kg. No spline count, length or engine application list is published against this number, so it must be ordered by part number against the transmission or drive unit it came out of rather than matched by eye to a shaft on the bench.

## ⚙️ Key Features

-   Marine Propulsion group
-   2.654 kg
-   A driveline component, so identification by part number matters more than usual
-   No published dimensions or engine application list, so order by part number

## 🔌 Function

Transmits engine torque into the gear train as the transmission's input shaft.

## ⚠️ Common Signs of Failure

-   Whine, growl or rumble that rises and falls with load rather than with engine speed
-   Splines visibly worn, rolled over or twisted
-   Bearing journals scored, blued or stepped where a bearing has spun
-   Play or knock felt at the coupling when the shaft is rocked by hand
-   Bright metal or fine debris found in the transmission oil

## 🛠️ Service Notes

-   Renew the bearings and oil seals that run on this shaft at the same time, not afterwards
-   Inspect the mating splines on the coupling and driven gear, they wear as a pair
-   Find out why the old shaft failed before fitting a new one, debris in the oil usually means something else has let go

## 📦 Condition

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

## Details

- **Price:** 3778.61 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 3778.61 AUD | In stock |

## Images

- 23370499 Primary Shaft | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/23370499-primary-shaft-genuine-volvo-penta)
> Updated: 2026-08-22