Cart
0
Sierra 18-3668 Thermostat Kit White
Couldn't load pickup availability
Vendor: Sierra
Type: Thermostats
Sku: WBCARB001441DY8
Available: Available
MPN: 18-3668
Sold by Carkart, an authorized reseller.
Returns accepted within 30 days | support@carkart.com
Shipping Information
- Free Standard Shipping — United States only
- Processing Time: 1–3 business days
- Estimated Delivery: 3–5 business days after dispatch
- Double-boxed, fully insured & discreetly packaged
- Tracking number sent via email once dispatched
- Orders over $250 require signature upon delivery. Taxes calculated at checkout.
Returns & Refund
Returns accepted within 30 days of delivery.
Damaged or Defective Item
Free return shipping + replacement or full refund
Wrong Item Received
Free return shipping + replacement or full refund
Change of Mind
Return shipping at customer's expense · 25% restocking fee applies
All returns require a Return Authorization (RA) number before sending.
View Full Return & Refund Policy
⚠️ California Proposition 65 Warning :
Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Guarantee safe checkout
Sierra 18-3668 Thermostat Kit White
$46.82
FAQs
Have a question ? We are here to help.
Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
Frequently Asked Questions
- Q: What materials are used in the Sierra 18-3668 Thermostat Kit? A: The Sierra 18-3668 Thermostat Kit is made of metal, plastic, and rubber or silicone. These materials ensure durability and proper functioning in automotive applications.
- Q: What are the dimensions of the Sierra 18-3668 Thermostat Kit? A: The Sierra 18-3668 Thermostat Kit measures seven inches in length, five inches in width, and three inches in height. These dimensions make it suitable for various GM V-6 and V-8 engines.
- Q: What is the temperature rating of the Sierra 18-3668 Thermostat? A: The Sierra 18-3668 Thermostat has a temperature rating of one hundred forty-two degrees Fahrenheit. This rating is ideal for maintaining optimal engine temperature.
- Q: How do I install the Sierra 18-3668 Thermostat Kit? A: To install the Sierra 18-3668 Thermostat Kit, follow the manufacturer's instructions for your engine model. Ensure that you replace the old thermostat and gaskets securely to prevent leaks.
- Q: Is the Sierra 18-3668 Thermostat Kit compatible with my engine? A: Yes, the Sierra 18-3668 Thermostat Kit fits GM V-6 and V-8 engines with standard cooling from nineteen eighty-three and newer. It also replaces several other part numbers.
- Q: Can I use the Sierra 18-3668 Thermostat Kit for other engine brands? A: No, the Sierra 18-3668 Thermostat Kit is specifically designed for GM V-6 and V-8 engines. Using it in other brands may lead to compatibility issues.
- Q: How should I clean and maintain the Sierra 18-3668 Thermostat Kit? A: Clean the Sierra 18-3668 Thermostat Kit with a soft cloth and avoid harsh chemicals. Regular inspections are recommended to ensure that all gaskets remain intact and functioning.
- Q: Is the Sierra 18-3668 Thermostat Kit safe for long-term use? A: Yes, the Sierra 18-3668 Thermostat Kit is designed for long-term use in appropriate applications. It meets or exceeds original equipment specifications.
- Q: What should I do if the Sierra 18-3668 Thermostat Kit arrives damaged? A: If the Sierra 18-3668 Thermostat Kit arrives damaged, you should contact the seller immediately for assistance with returns or exchanges. Keep all packaging for easier processing.
- Q: Does the Sierra 18-3668 Thermostat Kit come with a warranty? A: Yes, the Sierra 18-3668 Thermostat Kit typically comes with a manufacturer's warranty. Check the product packaging or the manufacturer's website for specific details.
- Q: Is the Sierra 18-3668 Thermostat Kit suitable for marine applications? A: Yes, the Sierra 18-3668 Thermostat Kit is suitable for marine applications, particularly in Mercruiser Stern Drive models. It is interchangeable with multiple part numbers.
- Q: How does the Sierra 18-3668 compare to other thermostat kits? A: The Sierra 18-3668 Thermostat Kit is designed to meet or exceed OEM specifications, ensuring reliable performance compared to other aftermarket options.
- Q: What makes the Sierra 18-3668 Thermostat Kit a good choice for GM engines? A: The Sierra 18-3668 Thermostat Kit is specifically engineered for GM V-6 and V-8 engines, ensuring a perfect fit and optimal performance in maintaining engine temperature.
- Q: Are there any special installation tips for the Sierra 18-3668 Thermostat Kit? A: Yes, it is recommended to apply gasket sealant on the gaskets during installation to prevent leaks and ensure a proper seal.
- Q: What do I do if my engine overheating persists after installing the Sierra 18-3668 Thermostat Kit? A: If your engine continues to overheat after installing the Sierra 18-3668 Thermostat Kit, check for other issues such as coolant levels, radiator function, and water pump operation.