Volvo Penta Primary Shaft 873013

Product Description

The Volvo Penta Primary Shaft 873013 is a genuine OEM driveline component designed for Volvo Penta sterndrive systems. This shaft serves as a critical link in the power transmission path, transferring rotational force from the engine coupling to the upper gear housing within the sterndrive assembly.

Precision-machined to exact OEM tolerances, this primary shaft ensures proper alignment, smooth power delivery, and long service life under high-load marine conditions. It is engineered for durability and resistance to wear, making it essential for maintaining reliable driveline performance.

Key Features

• Genuine Volvo Penta OEM primary shaft
• Precision-machined for exact fit and alignment
• Transfers engine power to sterndrive gear system
• Hardened steel construction for high strength and durability
• Designed for smooth and efficient torque transmission
• Direct OEM replacement no modification required

Engine / Drive Compatibility

Used in Volvo Penta sterndrive systems, commonly including:

• Volvo Penta 250, 270, 280, 290 drives
• Volvo Penta AQ series gasoline and diesel engines
• Applications using mechanical driveline coupling systems

Typically found in:

• Upper gear housing assemblies
• Engine-to-drive coupling systems

Works in conjunction with splined sleeves and couplers (e.g., 875183)
Critical component in full driveline assembly

Serial Number Fitment Notice

Primary shafts are highly application-specific. Always confirm compatibility using your sterndrive model and serial number before ordering.

When This Part Needs Replacement

• Loss of drive engagement or slipping
• Excessive spline wear or rounding
• Vibration or abnormal driveline noise
• Corrosion or pitting on shaft surfaces
• During major sterndrive rebuild or failure

Installation Notes

• Inspect all mating components (splines, coupler, bearings) before installation
• Lubricate splines with marine-grade grease
• Ensure proper alignment during installation
• Replace seals and gaskets when servicing driveline components
• Follow OEM torque specifications

Alternate / Superseded / Cross-Reference Part Numbers

• Volvo Penta: 873013
• Related components:
  • 875183 (splined sleeve)
  • 852443 (extension shaft, application dependent)

Parts Desk Insight

Primary shaft failures are usually a result of misalignment, lack of lubrication, or worn couplers. If replacing this shaft, always inspect the entire driveline system replacing just the shaft without addressing root causes can lead to repeat failure.

Shipping

Shipping: Ships same or next day for fast Canada wide shipping.