Product Description
Genuine Motorcraft RT-1084 Thermostat (NOS)
Ensure the reliable thermal management of your classic Ford or Mercury powertrain with this genuine Motorcraft RT-1084 Thermostat. This authentic New Old Stock (NOS) component, also identified by Ford engineering part number F2SZ-8575-A, is the factory-correct valve designed to regulate coolant flow through the engine and radiator. Engineered for the 1982-1986 passenger car lineup, this thermostat ensures your engine reaches its optimal operating temperature quickly, protecting internal seals and ensuring efficient fuel mapping. Manufactured in the USA to original factory specifications, it is a direct-fit restoration part for 1982-1986 Ford Mustang and Mercury Marquis models. Using original Motorcraft cooling components ensures the exact temperature calibration and seal integrity required to protect your vintage engine.
Key Features:
- Brand: Motorcraft
- Part Number: RT-1084
- OEM Number: F2SZ-8575-A
- Part Type: Engine Coolant Thermostat
- Origin: Made in USA
- Condition: New Old Stock (NOS)
Verified Vehicle Fitment:
| Make | Model | Year | Notes |
|---|---|---|---|
| Ford | Mustang | 1982-1986 | All applicable engines |
| Mercury | Marquis / Grand Marquis / Capri | 1982-1986 | Direct OEM Replacement |
Fits Years:
1982 1983 1984 1985 1986
Note on Stock Photos: Due to our inventory of multiple identical units for this specific part number, we utilize representative stock photos for this listing. You will receive a component that strictly meets all listed specifications and fitment requirements. Please be aware that because these are vintage parts, minor cosmetic variations—such as surface finish, color, or production markings—may exist between different manufacturing runs. These slight aesthetic differences are a result of historical production processes and do not impact the part's integrity, performance, or authenticity.
A Note on Fitment Accuracy: We manually research and cross-reference our fitment data using vintage manufacturer catalogs. While we strive for 100% accuracy, these decades-old resources—and the humans reading them—can occasionally contain errors. Additionally, these parts may fit other vehicles and years not explicitly listed in our data. To ensure a seamless restoration, we kindly ask that you perform your own due diligence and verify that this specific part number is correct for your application prior to purchase.
Unbeatable Prices & Expectations
While many of our vintage parts were manufactured decades ago, they remain unused and high-quality. Some original boxes may show signs of shelf-wear, such as dust, tape, or surface distress from years of storage. Rest assured, the components inside have been inspected to ensure they are complete and ready to help you finish your project without breaking the bank.
