Orbitrade Marine Flexible Stuffing Box 91874-1 – Replaces Volvo Penta 3819725 (1 1/4” Shaft / 2” Stern Tube) WITH Water Port

High-quality Orbitrade Marine flexible stuffing box designed to replace Volvo Penta part number 3819725.
This unit provides a reliable, watertight seal between the propeller shaft and stern tube, reducing vibration, friction, and maintenance requirements.

The kit includes everything required for installation — a flexible stuffing box, stern tube clamp, universal protective sleeve for the prop shaft, and lubricating grease to ensure smooth performance and long service life.

Product Compatibility & Fitment

• Replaces OEM Part Number: Volvo Penta 3819725 (with water port)
• Shaft Diameter: 1 1/4”
• Stern Tube Diameter: 2”
• Brand: Orbitrade Marine
• Model Number: 91874-1
• Application: For use with Volvo Penta marine propulsion systems and other compatible 1 1/4” shaft / 2” stern tube setups

Kit Includes

• Flexible stuffing box (rubber bellows assembly)
• Stainless clamp for stern tube connection
• Water Injection port
• Universal protective sleeve for propeller shaft
• Lubricating grease for installation and ongoing maintenance

Features & Benefits

• Direct replacement for Volvo Penta 3819725
• High-quality Orbitrade Marine construction for durability and corrosion resistance
• Flexible rubber design absorbs shaft movement and vibration
• Pre-lubricated and supplied with grease for optimal sealing and reduced wear
• Simplifies maintenance while ensuring long-term watertight reliability