Propeller Shaft Seal – Fits Volvo Penta 1-1/2" Inboard Shaft (3819726)
Propeller Shaft Seal – Fits Volvo Penta 1-1/2" Inboard Shaft (3819726) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Propeller Shaft Seal – Fits Volvo Penta 1-1/2" Inboard Shaft (...
Product Details
This genuine Volvo Penta propeller shaft seal for 1-1/2" inboard shaft (3819726) is designed for effective lubrication and sealing. It is specifically made for systems with a 1-1/2" (38.1mm) shaft diameter and a 2-1/4" (57.15mm) propeller tube external diameter.
This component serves as a direct replacement for Volvo Penta part number 3819726.
- Features a compact size for simple installation.
- Provides effective and reliable lubrication and sealing for the propeller shaft.
- Requires greasing every 200 hours or annually for optimal performance.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Volvo Penta | 3819726 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This shaft seal is designed for various Volvo Penta marine propulsion systems that match the specified shaft and tube dimensions.
| Brand | Model | Application | Shaft Diameter | Propeller Tube Ext. Dia. | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Volvo Penta | Various | Marine Propulsion | 1-1/2" (38.1mm) | 2-1/4" (57.15mm) | 3819726 | For effective lubrication, bearings must be water-lubricated at all speeds |
Technical Specs
- Product Type
- Propeller Shaft Seal
- Installation
- Inboard Shaft
- Shaft Diameter
- 1-1/2" (38.1mm)
- Propeller Tube External Diameter
- 2-1/4" (57.15mm)
- Product Dimensions
- Height: 13.5; Width: 11.0; Length: 11.0
- Box Dimensions
- Height: 13.5; Width: 11.0; Length: 11.0
- Part Dimensions
- A: 36mm, B: 82mm
- Material
- Molded Rubber
- Maintenance
- Grease every 200 hours or once a year
- Distance Between Bearing Points
- Must not exceed 1500mm (59")
- Tube Diameter Tolerance
- +0.5mm, -0.3mm
- Other Technical Attributes
- Simple installation, compact size, provides effective lubrication/sealing
What’s in the Box
- 1 x Volvo Penta Sealing Sleeve Kit (3819726)
- 1 x Installation Tools
- 1 x Grease
Installation Notes
- Ensure the engine is off and the vessel is safely secured out of the water.
- Carefully remove the propeller shaft and the old seal assembly.
- Thoroughly clean the propeller shaft and the inside of the propeller tube, ensuring both are free of debris and corrosion.
- Lightly lubricate the new rubber seal and the shaft with the provided grease to facilitate a smooth installation.
- Slide the new seal onto the shaft and into the tube, ensuring it is properly seated according to Volvo Penta guidelines.
- Secure the seal assembly with the appropriate hose clamps, tightening them to the manufacturer's recommended torque.
- After installation, perform a final check for proper alignment and sealing before operating the vessel.
Troubleshooting & FAQ
How do I know if this shaft seal fits my boat?
This seal is made for Volvo Penta inboard systems requiring a seal for a 1-1/2" (38.1mm) shaft and a 2-1/4" (57.15mm) propeller tube. Always measure your existing shaft and tube and compare with the specifications in this listing to ensure a perfect match.
What are the signs of a failing shaft seal?
Common indicators include excessive water dripping into the bilge from around the propeller shaft, visible cracks or deterioration of the rubber seal, or an increase in shaft-related vibration or noise.
What is the recommended maintenance for this seal?
To ensure a long service life, the seal must be lubricated with grease every 200 hours of engine operation or at least once per year, whichever occurs first.
Why is the distance between bearing points important?
The distance between the shaft's supporting bearings must not exceed 1500mm (59"). This ensures correct shaft alignment, prevents excessive "whip" or vibration, and avoids placing undue stress on the seal, which could lead to premature failure.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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