Thermostat Kit for Volvo Penta 3.0L Stern Drive, 1996-Up — Replaces 3853799, 982554, 3852096, 778064
Thermostat Kit for Volvo Penta 3.0L Stern Drive, 1996-Up — Replaces 3853799, 982554, 3852096, 778064 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Thermostat Kit for Volvo Penta 3.0L Stern Drive, 1996-Up — Replaces...
Thermostat Kit for Volvo Penta 3.0L Stern Drive, 1996-Up — Replaces 3853799, 982554, 3852096, 778064 is backordered and will ship as soon as it is back in stock.
Product Details
This 160°F thermostat kit is listed for Volvo Penta 3.0L stern drive and outdrive applications from 1996 onward. It is intended for the 3.0 GL, GSP, GLP, and GLM models used from 1996–2000, and the 3.0 GLP, GLM, GSP, and GSM models listed from 2000 to current applications.
The kit is identified by the following manufacturer and aftermarket reference numbers: Volvo Penta and OMC Cobra references 3853799, 982554, 3852096, and 778064, plus Sierra reference 18-3621.
- Thermostat kit for applicable Volvo Penta 3.0L stern drive and outdrive cooling systems.
- 160°F (71°C) thermostat rating.
- Designed as a replacement for the listed reference numbers.
- Verify the complete engine model, year, version, and original part configuration before ordering.
Part Number Matrix
These are the reference numbers associated with this thermostat kit. Reference numbers identify application leads and should be checked against the engine identification and original part.
| Brand or Source | Reference Number |
|---|---|
| Volvo Penta | 3853799 |
| Volvo Penta | 982554 |
| Volvo Penta | 3852096 |
| Volvo Penta | 778064 |
| OMC Cobra | 3853799, 982554, 3852096, 778064 |
| Sierra | 18-3621 |
Engine & Model Compatibility
The company application data lists this kit for Volvo Penta 3.0L engines from 1996 onward. Keep the model, year, and version together when confirming fitment.
| Brand | Engine and Model | Stroke | Model Years | Reference Numbers | Application Notes |
|---|---|---|---|---|---|
| Volvo Penta | 3.0 GL, GSP, GLP, GLM | 4-Stroke | 1996–2000 | 3853799, 982554, 3852096, 778064 | Confirm the exact engine version and identification before ordering. |
| Volvo Penta | 3.0 GLP, GLM, GSP, GSM | 4-Stroke | 2000–Current | 3853799, 982554, 3852096, 778064 | Confirm the exact engine version and identification before ordering. |
Fitment note: The model and year ranges above are the listed application ranges. They do not confirm every serial number, cooling-system configuration, or housing variation. Compare the original thermostat and housing arrangement before installation.
Technical Specs
- Product Type
- Thermostat Kit
- Application
- Volvo Penta 3.0L stern drive and outdrive cooling systems
- Thermostat Rating
- 160°F (71°C)
- Listed Model Years
- 1996–Current, subject to the model and version conditions above
- Replacement References
- 3853799, 982554, 3852096, 778064, and 18-3621
- Installation
- Replacement installation; compare the original configuration before servicing
What’s in the Box
This product is listed as a thermostat kit. The company records identify the kit and its reference numbers but do not provide a verified itemized package list or component quantities. Do not assume that a separate housing, gasket, O-ring, or other individual component is included unless it is shown in the product packaging or confirmed before purchase.
Installation Notes
- Disconnect the battery and allow the engine to cool completely before beginning work.
- Review the service information for the specific engine and cooling-system configuration.
- Drain coolant or raw water as required by the applicable cooling system before opening the thermostat housing.
- Remove the hoses and thermostat housing components carefully, noting the original orientation.
- Compare the replacement thermostat and sealing surfaces with the original parts before installation.
- Clean the housing mating surfaces and remove old sealing material without damaging the housing.
- Install the thermostat and any separately supplied sealing components in the correct orientation.
- Reinstall the housing and tighten fasteners to the engine manufacturer’s specified torque.
- Reconnect hoses and secure all clamps.
- Refill and bleed the cooling system according to the applicable service procedure.
- Reconnect the battery, start the engine, and check for leaks and proper temperature response.
Troubleshooting & FAQ
How do I know if my thermostat is failing?
Common symptoms include overheating, running cooler than expected, erratic temperature changes, or leakage around the thermostat housing. Other cooling-system faults can cause similar symptoms, so diagnose the system before replacing the thermostat.
Will this fit my specific Volvo Penta 3.0L model?
The listed application is for Volvo Penta 3.0L models in the 1996-up ranges shown above. Verify the exact model, year, version, engine identification, and original thermostat configuration before ordering.
What is the thermostat temperature rating?
This kit is listed with a 160°F (71°C) thermostat rating. Use the temperature rating specified for your exact engine application.
Does the kit include a gasket and O-ring?
The company records identify this product as a thermostat kit but do not provide a verified itemized contents list. Confirm the package contents before assuming that a gasket, O-ring, thermostat housing, or other component is included.
Is this an OEM component?
This listing is for a replacement thermostat kit associated with the listed Volvo Penta, OMC Cobra, and Sierra reference numbers. It should not be treated as a genuine branded OEM component unless the packaging specifically identifies it as such.
What should I compare before ordering?
Compare the original thermostat, housing arrangement, sealing surfaces, engine model, year, version, and reference numbers. Do not rely on engine displacement alone to confirm fitment.
Shipping speed and cost
Shipping options, delivery estimates, and costs are shown at checkout and may vary by destination and service availability.
Warranty and returns
Warranty and return eligibility are governed by the current store policy. Contact support with your order details before returning or installing a suspected defective part.
Safety & Important Info
- Work only on a cool engine and follow the applicable marine engine service instructions.
- Verify the model, year, version, cooling-system configuration, and original part before purchase.
- Compare the replacement part with the original before installation; do not install a part that differs in fit or configuration.
- Professional installation is recommended when the cooling-system service procedure or engine identification is uncertain.
About Sea Sierra
- Marine Replacement Parts — We provide replacement components for a range of marine service applications.
- Application-Focused Listings — Product details are organized around engine models, years, and reference numbers to support fitment checks.
- Customer Support — Contact support with your engine information and original part details if you need help confirming an application.
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