Gasket – Fits Volvo Penta DPS & SX Sterndrives (Replaces 3889784, 3841966)
Gasket – Fits Volvo Penta DPS & SX Sterndrives (Replaces 3889784, 3841966) is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Gasket – Fits Volvo Penta DPS & SX Sterndrives (Replaces 388978...
Product Details
This is a gear housing mounting Gasket – Fits Volvo Penta DPS & SX Sterndrives, designed for use in a wide range of models including the SX-A, SX-D, DPS-A, DPS-B, and FWD series. It ensures a reliable seal for the lower gearhousing unit.
This part is a direct aftermarket replacement for Volvo Penta part numbers 3889784 and the superseded 3841966.
- Installs at the gear housing mounting point.
- Critical for preventing water intrusion and lubricant leaks in the lower gearhousing.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Volvo Penta | 3841966 | Superseded by 3889784. |
| Volvo Penta | 3889784 | Current OEM part number. |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This gasket is compatible with the following Volvo Penta sterndrive models. Please ensure your drive model is listed before purchasing.
| Brand | Model | OEM Part No. | Notes |
|---|---|---|---|
| Volvo Penta | SX-A | 3889784 | Replaces 3841966 |
| Volvo Penta | SX-D | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-A | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-B | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-A OXI | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-B OX | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-B OXI | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-B1 | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-D1 | 3889784 | Replaces 3841966 |
| Volvo Penta | DPS-D1 OX | 3889784 | Replaces 3841966 |
| Volvo Penta | FWD-B1 | 3889784 | Replaces 3841966 |
| Volvo Penta | FWD-B2 | 3889784 | Replaces 3841966 |
| Volvo Penta | FWD-D1 OX | 3889784 | Replaces 3841966 |
| Volvo Penta | FWD-D2 OX | 3889784 | Replaces 3841966 |
Technical Specs
- Product Type
- Gasket
- Installation
- Gear housing mounting
- Location
- Used in lower gearhousing
- Product Dimensions
- 12.0 in x 11.0 in x 1.0 in
What’s in the Box
- 1 x Gasket (3889784)
Installation Notes
- Ensure the engine is off and disconnect the battery for safety.
- Carefully drain the gearcase lubricant into a suitable container.
- Remove the lower unit (sterndrive) assembly according to your official service manual.
- Take off the old gasket and meticulously clean both mating surfaces. Remove all old gasket material and residue to ensure a clean, smooth surface.
- Position the new gasket correctly on the cleaned surface.
- Reinstall the lower unit, ensuring proper alignment. Torque all bolts to the manufacturer's specified values in the recommended sequence.
- Refill the gearcase with the correct type and amount of new lubricant.
- Reconnect the battery. After a brief operational test, check thoroughly for any signs of oil or water leaks around the seal.
Troubleshooting & FAQ
How do I know if my gear housing gasket needs replacement?
Signs of a failing gasket include milky or discolored gear lube (indicating water intrusion), visible oil leaks around the lower unit seam, or an overheating drive due to lubricant loss.
Is this gasket reusable?
No. Gaskets create a seal by compressing and are designed for single use. Always install a new gasket whenever the gear housing is removed to ensure a proper, leak-free seal.
Do I need to use a sealant with this gasket?
Generally, this type of gasket is designed to be installed dry. However, always consult your specific Volvo Penta service manual for any recommendations regarding the use of supplemental sealants or adhesives.
Will this fit a model not on the compatibility list?
We can only guarantee a fit for the specific models listed. Using this gasket on an unlisted model is not recommended and may result in improper sealing, leaks, or component damage. Always verify your part number before ordering.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
