71°C/160°F Thermostat for Suzuki DF70–DF300 and OMC/Johnson/Evinrude 90–225 HP Outboards
71°C/160°F Thermostat for Suzuki DF70–DF300 and OMC/Johnson/Evinrude 90–225 HP Outboards is backordered and will ship as soon as it is back in stock.
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71°C/160°F Thermostat for Suzuki DF70–DF300 and OMC/Johnson/Evinrud...
71°C/160°F Thermostat for Suzuki DF70–DF300 and OMC/Johnson/Evinrude 90–225 HP Outboards is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket engine thermostat is designed to open at 71°C (160°F) and regulate coolant flow in selected Suzuki 4-stroke outboard engines from the DF70 through DF300 ranges. Company fitment information also lists selected OMC, Johnson, and Evinrude outboards from 90 to 225 HP.
The thermostat is listed as a replacement for Suzuki references 17670-90J10 and 17670-90J11, and for OMC/Johnson/Evinrude references including 5033722. Additional listed reference numbers are provided below to help compare your original part.
- 71°C (160°F) opening temperature.
- Single replacement thermostat, not a multi-part kit.
- Designed for selected Suzuki DF-series 4-stroke outboards.
- Also listed for selected OMC, Johnson, and Evinrude 90–225 HP applications.
- Verify the exact model, year, and serial-number range before ordering.
Part Number Matrix
These are manufacturer or aftermarket reference numbers listed for this thermostat. A reference number alone does not replace checking the complete engine application.
| Brand or Application | Reference Number |
|---|---|
| Suzuki Marine | 17670-90J10 |
| Suzuki Marine | 17670-90J11 |
| OMC / Johnson / Evinrude | 5033722 |
| OMC / Johnson / Evinrude | 5033762 |
| OMC / Johnson / Evinrude | 0769768 |
| Aftermarket reference | 18-S90J |
Engine & Model Compatibility
The company catalog lists the following Suzuki applications and conditions. Model suffixes and production years matter, so compare the complete model designation and serial number with your engine documentation.
| Brand | Model | Rated HP | Stroke | Application Condition | Listed Reference |
|---|---|---|---|---|---|
| Suzuki | DF70, DF80, DF90A | 70–90 | 4-Stroke | 2009 and later | 17670-90J10 / 17670-90J11 |
| Suzuki | DF90, DF100, DF115 | 90–115 | 4-Stroke | 2001–2011 | 17670-90J10 / 17670-90J11 |
| Suzuki | DF100A, DF115A, DF140A | 100–140 | 4-Stroke | 2013 and later | 17670-90J10 / 17670-90J11 |
| Suzuki | DF140 | 140 | 4-Stroke | 2002–2012 | 17670-90J10 / 17670-90J11 |
| Suzuki | DF150, DF175 | 150–175 | 4-Stroke | 2006 and later | 17670-90J10 / 17670-90J11 |
| Suzuki | DF200, DF225, DF250 | 200–250 | 4-Stroke | 2004 and later | 17670-90J10 / 17670-90J11 |
| Suzuki | DF300 | 300 | 4-Stroke | 2019 and later | 17670-90J10 / 17670-90J11 |
| OMC / Johnson / Evinrude | Selected 90–225 HP models | 90–225 | 2-Stroke application listings | Check exact model and year | 5033722 |
Technical Specifications
- Product Type
- Engine thermostat
- Opening Temperature
- 71°C (160°F)
- Primary Application
- Selected Suzuki DF-series 4-stroke outboard engines
- Additional Application
- Selected OMC, Johnson, and Evinrude 90–225 HP outboards
- Product Configuration
- Single replacement thermostat
- Installation
- Replacement component; installation must follow the engine service manual
What’s in the Box
- 1 × 71°C (160°F) engine thermostat
A gasket or seal is not identified as included in the company product information. Inspect the original installation and obtain any required replacement gasket separately if specified by the engine service manual.
Installation Notes
- Allow the engine to cool completely before beginning work.
- Follow the service manual for your exact model, year, and serial-number range.
- Remove the thermostat housing according to the manufacturer's procedure.
- Note the original thermostat orientation before removal.
- Clean the mating surfaces and inspect the housing, gasket, and sealing surfaces.
- Install the new thermostat in the correct orientation.
- Use a new gasket or seal when required by the service manual; it is not identified as included with this product.
- Reassemble and tighten fasteners to the manufacturer's specified torque.
- Run the engine according to the service procedure and check for leaks and correct cooling-water flow.
Troubleshooting & FAQ
What temperature does this thermostat open at?
This thermostat is listed with an opening temperature of 71°C (160°F).
Is this thermostat a kit?
No. The company product record identifies this as a single replacement thermostat. A gasket or other installation hardware is not identified as included.
Which Suzuki engines are listed for this thermostat?
Listed Suzuki applications include selected DF70, DF80, DF90, DF100, DF115, DF140, DF150, DF175, DF200, DF225, DF250, and DF300 models, with model-specific year and suffix conditions. Review the compatibility table before ordering.
Can this fit an OMC, Johnson, or Evinrude outboard?
The company information lists OMC, Johnson, and Evinrude applications from 90 to 225 HP, including reference 5033722. Confirm the exact engine model and year because the listed applications are not a universal fitment statement.
Do I need a new gasket?
Check the engine service manual and inspect the existing gasket or seal. A gasket is not identified as included with this thermostat, so a suitable replacement may need to be sourced separately.
How do I confirm compatibility?
Compare the complete engine model designation, horsepower, stroke, year, and serial number with the compatibility information. Also compare the thermostat and housing arrangement with the original part before installation.
Is this an OEM thermostat?
This listing is for an aftermarket replacement. Suzuki, OMC, Johnson, and Evinrude names and reference numbers are used only to identify listed applications and replacement references.
Safety & Important Information
- Never open the cooling system or thermostat housing while the engine is hot.
- Confirm fitment using the complete model, year, and serial-number information before purchase.
- Use the correct installation orientation, gasket, seal, fastener torque, and cooling-system procedure for your engine.
- Professional installation is recommended if you are not familiar with outboard cooling-system service.
- This is an aftermarket replacement, not an OEM-branded component.
About Sea Sierra
- Marine replacement parts for routine outboard maintenance and repair.
- Product information organized around engine model and application details.
- Support for selecting replacement components using the original part and engine information.
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