Thermostat Kit – Fits Yamaha F75-F250 4-Stroke Outboards (Replaces 67F-12411-01-00, 67F-12411-00-00, Suzuki 17670-90J00)
Thermostat Kit – Fits Yamaha F75-F250 4-Stroke Outboards (Replaces 67F-12411-01-00, 67F-12411-00-00, Suzuki 17670-90J00) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Thermostat Kit – Fits Yamaha F75-F250 4-Stroke Outboards (Replaces ...
Product Details
This Thermostat Kit – Fits Yamaha F75-F250 4-Stroke Outboards (Replaces 67F-12411-01-00, 67F-12411-00-00) is engineered to regulate your engine's operating temperature for optimal performance and longevity. It is designed for a broad range of Yamaha 4-stroke outboards from 75 HP to 250 HP (2001–2017 models) and also fits select Suzuki outboards requiring OEM part number 17670-90J00.
This kit provides a direct replacement for Yamaha part numbers 67F-12411-01-00, 67F-12411-00-00, and 6CB-12411-00-00, as well as Sierra 18-3632 and Suzuki 17670-90J00.
- Designed for direct OEM replacement, ensuring a precise fit.
- Constructed from corrosion-resistant stainless steel and copper for durability in marine environments.
- Includes the thermostat, gasket, and sealing rings required for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 67F-12411-01-00 |
| Yamaha | 67F-12411-00-00 |
| Yamaha | 6CB-12411-00-00 |
| Sierra | 18-3632 |
| Suzuki | 17670-90J00 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha Outboards: This thermostat fits a wide range of Yamaha 4-stroke models from 2001 to 2017. Please check the specific model and year in the table to ensure compatibility.
For Suzuki Outboards: This kit is listed as compatible with models requiring Suzuki OEM part number 17670-90J00. We recommend verifying your specific model's requirements as detailed model compatibility data for Suzuki was not provided.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F75 | 75 | 4-Stroke | 2003–2004 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F75 | 75 | 4-Stroke | 2005 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F75/F75A | 75 | 4-Stroke | 2006–2017 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F80 | 80 | 4-Stroke | 2001–2003 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F90 | 90 | 4-Stroke | 2003–2004 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F90 | 90 | 4-Stroke | 2005 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F90/F90A | 90 | 4-Stroke | 2006–2015 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F90A | 90 | 4-Stroke | 2016–2017 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F100 | 100 | 4-Stroke | 2001 & newer | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F150 | 150 | 4-Stroke | 2004 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F150 | 150 | 4-Stroke | 2005 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F150 | 150 | 4-Stroke | 2006–2008 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F150/F150A/F150B | 150 | 4-Stroke | 2009–2017 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | LF150 | 150 | 4-Stroke | 2004–2011 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | LF150A | 150 | 4-Stroke | 2012–2014 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | LF150B | 150 | 4-Stroke | 2015–2018 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F200 | 200 | 4-Stroke | 2005–2010 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | LF200 | 200 | 4-Stroke | 2005–2010 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F200A/LF200A | 200 | 4-Stroke | 2011–2017 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | VF200 | 200 | 4-Stroke | 2009–2010 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F225/LF225 | 225 | 4-Stroke | 2005–2010 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F225A/LF225A | 225 | 4-Stroke | 2011–2017 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F225B/LF225B | 225 | 4-Stroke | 2008–2009 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | VF225 | 225 | 4-Stroke | 2009–2010 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | F250/LF250 | 250 | 4-Stroke | 2005–2011 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
| Yamaha | VF250 | 250 | 4-Stroke | 2010 | 67F-12411-01-00 | Supersedes 67F-12411-00-00 |
Technical Specs
- Product Type
- Marine Outboard Thermostat
- Installation
- Direct OEM replacement
- Housing Material
- Stainless Steel and Copper Components
- Operating Temperature
- 60°C/140°F opening temperature
- Other Technical Attributes
- High thermal conductivity, corrosion resistant
What’s in the Box
- 1 x Outboard Thermostat (60°C/140°F) (67F-12411-01-00)
- 2 x Rubber Sealing Rings
- 1 x Gasket (63P-12414-00-00)
Installation Notes
- Disconnect the negative battery cable before beginning work.
- Locate the thermostat housing on the engine block or cylinder head.
- Place a catch pan below the housing and carefully drain a sufficient amount of coolant.
- Remove the bolts securing the thermostat housing cover.
- Note the orientation of the old thermostat before removing it, along with any gaskets or seals.
- Thoroughly clean the mating surfaces of the housing and cover, removing all old gasket material.
- Install the new thermostat in the correct orientation, ensuring the new gasket and sealing rings are properly seated.
- Reinstall the housing cover and tighten the bolts to the manufacturer's specified torque.
- Refill the cooling system with the appropriate coolant.
- Reconnect the battery cable, start the engine, and let it warm up to check for leaks and proper temperature gauge operation.
Troubleshooting & FAQ
How do I know if my thermostat is failing?
Common signs of a faulty thermostat include the engine overheating, the engine not reaching normal operating temperature (running too cool), or erratic temperature gauge readings. These symptoms can lead to poor performance, increased fuel consumption, or engine damage.
What is the correct operating temperature for this thermostat?
This thermostat is rated to begin opening at 60°C (140°F). It regulates coolant flow to maintain the engine's temperature within its optimal range for efficiency and performance.
Can I install this thermostat myself?
Installation can be performed by individuals with mechanical experience and the correct tools. However, due to the critical role of the cooling system, professional installation is recommended to ensure a proper seal and prevent coolant leaks or overheating.
Does this kit fit my Suzuki outboard?
This kit is listed as a replacement for Suzuki OEM part number 17670-90J00. While this confirms interchangeability, we strongly recommend cross-referencing this part number with your specific Suzuki engine model and year to guarantee fitment.
What is the difference between this and the original OEM part?
This is an aftermarket component designed to meet or exceed OEM specifications. It provides the same form, fit, and function as the original part, using comparable corrosion-resistant materials for reliable performance in a marine environment.
How often should a thermostat be replaced?
Thermostats do not have a fixed replacement interval, but it is common practice to inspect them during cooling system service or replace them as a preventive measure every few hundred hours or every 3-5 years, especially if operating in saltwater.
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
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