OE Quality
60-Day Returns

Fel-Pro 35717 Engine Coolant Thermostat O-Ring
Reliable Engine Coolant Thermostat O-Ring for Ford, Mercury, Pontiac, and Toyota
The Fel-Pro 35717 Engine Coolant Thermostat O-Ring is designed to provide a secure seal in your vehicle's cooling system. Engineered as a premium-grade O-ring, it ensures proper thermostat function and prevents coolant leaks in select Ford, Mercury, Pontiac, and Toyota models.
Key Features of Fel-Pro 35717 Thermostat O-Ring
- Premium grade material for durability and heat resistance
- Precise fit for Ford, Mercury, Pontiac, and Toyota vehicles
- Compatible with models including Celica, Contour, Corolla, Cougar, Escort, Focus, Matrix, Mystique, and Vibe
- Designed to maintain a tight seal around the engine coolant thermostat
- Part number 35717 ensures correct replacement and fitment
Detailed Product Description
This Fel-Pro Engine Coolant Thermostat O-Ring (part number 35717) is manufactured to meet OEM specifications, providing a reliable seal for the thermostat housing. The premium grade material withstands high temperatures and exposure to engine coolant, reducing the risk of leaks and maintaining optimal engine temperature regulation. This O-ring is compatible with a range of vehicles including the Ford Contour and Focus, Mercury Mystique, Pontiac Vibe and Cougar, as well as Toyota Celica, Corolla, Escort, and Matrix models. Proper sealing of the thermostat housing is critical to prevent coolant loss and ensure efficient engine operation.
Common Applications and Issues Addressed
- Prevents coolant leaks around the thermostat housing
- Eliminates overheating caused by faulty thermostat seals
- Reduces risk of engine damage due to coolant loss
- Maintains proper engine temperature regulation
- Replaces worn or damaged thermostat O-rings in specified vehicles
Installation Notes and Tips
- Ensure the thermostat housing surface is clean and free of debris before installation
- Lubricate the O-ring lightly with engine coolant or appropriate lubricant to ease installation
- Verify correct orientation and seating of the O-ring to avoid leaks
- Use the Fel-Pro 35717 part number to confirm compatibility with your vehicle model
Quality Assurance and Warranty
Fel-Pro manufactures this thermostat O-ring to meet stringent quality standards, ensuring durability and reliable performance. The premium grade material is tested for heat and chemical resistance to withstand engine operating conditions. While specific warranty details may vary, Fel-Pro products typically come with a limited warranty against defects in material and workmanship.
This part fits 37 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2006 | Pontiac | Vibe | 1.8L | L4 | N/A | |
| 2006 | Toyota | Corolla | 1.8L | L4 | N/A | |
| 2006 | Toyota | Matrix | 1.8L | L4 | N/A | |
| 2005 | Pontiac | Vibe | 1.8L | L4 | N/A | |
| 2005 | Toyota | Celica | 1.8L | L4 | N/A | |
| 2005 | Toyota | Corolla | 1.8L | L4 | N/A | |
| 2005 | Toyota | Matrix | 1.8L | L4 | N/A | |
| 2004 | Ford | Focus | 2.0L | L4 | N/A | |
| 2004 | Pontiac | Vibe | 1.8L | L4 | N/A | |
| 2004 | Toyota | Celica | 1.8L | L4 | N/A | |
| 2004 | Toyota | Matrix | 1.8L | L4 | N/A | |
| 2003 | Ford | Escort | 2.0L | L4 | N/A | |
| 2003 | Ford | Focus | 2.0L | L4 | N/A | |
| 2003 | Pontiac | Vibe | 1.8L | L4 | N/A | |
| 2003 | Toyota | Celica | 1.8L | L4 | N/A | |
| 2003 | Toyota | Matrix | 1.8L | L4 | N/A | |
| 2002 | Ford | Escort | 2.0L | L4 | N/A | |
| 2002 | Ford | Focus | 2.0L | L4 | N/A | |
| 2002 | Mercury | Cougar | 2.0L | L4 | N/A | |
| 2002 | Toyota | Celica | 1.8L | L4 | N/A | |
| 2001 | Ford | Escort | 2.0L | L4 | N/A | |
| 2001 | Ford | Focus | 2.0L | L4 | N/A | |
| 2001 | Mercury | Cougar | 2.0L | L4 | N/A | |
| 2001 | Toyota | Celica | 1.8L | L4 | N/A | |
| 2000 | Ford | Contour | 2.0L | L4 | N/A | |
| 2000 | Ford | Escort | 2.0L | L4 | N/A | |
| 2000 | Ford | Focus | 2.0L | L4 | N/A | |
| 2000 | Mercury | Cougar | 2.0L | L4 | N/A | |
| 2000 | Mercury | Mystique | 2.0L | L4 | N/A | |
| 2000 | Toyota | Celica | 1.8L | L4 | N/A | |
| 1999 | Ford | Contour | 2.0L | L4 | N/A | |
| 1999 | Ford | Escort | 2.0L | L4 | N/A | |
| 1999 | Mercury | Cougar | 2.0L | L4 | N/A | |
| 1999 | Mercury | Mystique | 2.0L | L4 | N/A | |
| 1998 | Ford | Contour | 2.0L | L4 | N/A | |
| 1998 | Ford | Escort | 2.0L | L4 | N/A | |
| 1998 | Mercury | Mystique | 2.0L | L4 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.