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Description
Thermostat (72°C) – Fits Suzuki Outboard DF40-DF70 (Replaces 17670-87J00-000, 17670-87J01)Thermostat (72C) Fits Suzuki Outboard DF40 DF70 (Replaces 17670 87J00 000, 17670 87J01) This replacement thermostat is designed for Suzuki 4 stroke outboard engines from 40 to 70 HP (DF40, DF50, DF60, DF70), model years 19982010. It regulates the engine's operating temperature by opening the cooling circuit at a precise 72C. It serves as a direct replacement for Suzuki part numbers 17670 87J00 000 and 17670 87J01, as well as Sierra 18 3627 and CEF
Thermostat (72°C) – Fits Suzuki Outboard DF40-DF70 (Replaces 17670-87J00-000, 17670-87J01)
This replacement thermostat is designed for Suzuki 4-stroke outboard engines from 40 to 70 HP (DF40, DF50, DF60, DF70), model years 1998–2010. It regulates the engine's operating temperature by opening the cooling circuit at a precise 72°C.
It serves as a direct replacement for Suzuki part numbers 17670-87J00-000 and 17670-87J01, as well as Sierra 18-3627 and CEF 5031762.
- Regulates engine temperature by opening at a factory-set 72°C (161.6°F).
- Engineered to meet OEM specifications for reliable performance.
- Important: A new gasket is required for installation but is not included with this part.
Part Number Cross-Reference
Use this table to confirm equivalent part numbers across OEM and aftermarket brands.
| Brand | Part Number | Superseded By |
|---|---|---|
| Suzuki | 17670-87J00-000 | 17670-87J01 |
| Suzuki | 17670-87J01 | |
| Sierra | 18-3627 | |
| CEF | 5031762 |
Compatible Engine Models
Confirm your engine model/year in the table below. For Suzuki owners, You can review exploded diagrams here to verify part numbers: Suzuki Parts Diagrams & Catalog.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Suzuki | DF40 | 40 | 4-Stroke | 1999–2010 | 17670-87J00-000 | |
| Suzuki | DF50 | 50 | 4-Stroke | 1999–2010 | 17670-87J00-000 | DF50X-K10 variant |
| Suzuki | DF60 | 60 | 4-Stroke | 1998–2009 | 17670-87J00-000 | |
| Suzuki | DF70 | 70 | 4-Stroke | 1998–2009 | 17670-87J00-000 | DF70W-K9 variant |
Technical Specifications
| Specification | Value |
|---|---|
| Product Type | Thermostat |
| Opening Temperature | 72°C (161.6°F) |
| Housing Material | Metal |
| Dimensions | 3 × 3 × 3 in (76.2 × 76.2 × 76.2 mm) |
| Weight | 0.25 lbs (0.11 kg) |
| Function | Regulates engine temperature by opening cooling circuit at specified temperature |
| Production Standards | ISO9002 certified factories |
Package Contents
1 × Thermostat (Replaces 17670-87J00-000/17670-87J01)
Note: Gasket and O-rings are not included.
Installation Guide
- Ensure the engine is completely cool before beginning work.
- Locate the thermostat housing, typically on the cylinder head or block.
- Place a drain pan under the housing to catch coolant, then unbolt the cover.
- Carefully remove the old thermostat, noting its correct orientation.
- Thoroughly clean the mating surfaces of the housing and its cover.
- Install the new thermostat, ensuring it is seated in the proper direction.
- Fit a new gasket (sold separately) and reinstall the housing cover, tightening bolts to the specified torque.
- Refill the cooling system with the appropriate coolant and start the engine to check for leaks and proper operation.
Troubleshooting & FAQ
Q: How do I confirm this thermostat fits my Suzuki outboard?
A: Check your engine model and year against the "Compatible Engine Models" table. It is also critical to verify that your existing part number matches one of the cross-referenced numbers, such as 17670-87J00-000 or 17670-87J01.
Q: What are the signs of a failing thermostat?
A: Common signs of failure include the engine overheating or, conversely, taking too long to reach its normal operating temperature. An inconsistent temperature gauge reading during operation can also indicate a faulty thermostat that is stuck open or closed.
Q: Is a gasket included with this part?
A: No, this package contains only the thermostat. You will need to purchase the correct gasket separately before beginning the installation.
Q: What is the opening temperature of this thermostat?
A: This thermostat is designed to open at a precise 72°C (161.6°F) to ensure your engine maintains its correct operating temperature for optimal performance and efficiency.
Q: OEM vs. Aftermarket?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.
Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.
Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.
Important Notes
- Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
- This product is an aftermarket replacement part and is not an OEM component.
- Professional installation is recommended to ensure safety and optimal performance.
Why Choose JLM MARINE?
- Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
- Fast Global Shipping: Free delivery worldwide in 5–15 days.
- Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy