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The Fel-Pro 35991 engine coolant thermostat gasket is specifically engineered for Ford F-150 trucks from model years 2018 to 2023 and Mustang vehicles from 2015 to 2021. Designed to provide a reliable seal, this gasket ensures optimal engine cooling system performance even on imperfect sealing surfaces. Crafted with proprietary materials, it offers durability and resistance to heat, chemicals, and pressure fluctuations encountered during regular vehicle operation. This gasket is ideal for repair professionals and DIY enthusiasts seeking a high-quality, dependable replacement that meets or exceeds OEM specifications. Its application-specific design guarantees a perfect fit, simplifying installation and providing peace of mind that the cooling system will function correctly after replacement.
Fel-Pro's innovative sealing solutions are validated for fit, form, and function, making them a trusted choice for automotive repairs and maintenance. The gasket's construction ensures a proper seal to prevent leaks that could lead to overheating or engine damage. With a focus on the repair environment, Fel-Pro's product delivers unsurpassed quality and reliability, helping maintain the longevity and efficiency of your vehicle's cooling system. Whether replacing a worn-out gasket or upgrading your cooling components, this gasket offers a dependable solution that aligns with the demanding needs of automotive repair and maintenance.
The Fel-Pro 35991 gasket is a crucial component for restoring proper sealing in your vehicle's cooling system, ensuring consistent engine temperature regulation and helping prevent costly repairs due to leaks or overheating. Its precise design and durable materials make it an essential part for maintaining the performance and reliability of your Ford F-150 or Mustang.
Features:
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
