Eliminate a notorious cooling system failure point on your Super Duty with the Fleece Performance cast aluminum thermostat housing upgrade. Engineered as a permanent fix for brittle OEM plastic housings prone to heat fatigue, warping, and cracking, this direct bolt-on unit restores reliability to your primary cooling system.

Key Features & Benefits

• Heavy-Duty Cast Aluminum: Replaces fragile factory plastic to withstand extreme engine bay heat cycles and cooling system pressure.
• Leak-Free Sealing: Ships complete with a new coolant elbow O-ring and primary thermostat O-ring to ensure a positive, leak-proof seal.
• Direct Drop-In Fitment: Retains factory coolant passages and reuses stock mounting hardware for an easy installation with zero modifications required.
• Broad Thermostat Compatibility: Designed to function seamlessly with factory OEM or aftermarket thermostats.
• Permanent Durability: Eradicates the common coolant loss, sweet odor, and seepage issues associated with degraded stock housings.

Fitment & Compatibility

• Years: 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026
• Make: Ford
• Model: F-250, F-350, F-450, F-550, F-600, F-650, F-750 Super Duty
• Engine: 6.7L Powerstroke Diesel (Primary Cooling System)

Technical & Installation Notes

• Location: Replaces the primary engine cooling system thermostat housing.
• Hardware: Mounting bolts are not included; reuse factory 3-bolt hardware and torque evenly to OEM specifications.
• Components Included: (1) Cast aluminum housing, (1) coolant elbow O-ring, and (1) thermostat O-ring.
• Thermostat Note: Replacement thermostat and fresh coolant are sold separately. Inspect or replace the thermostat while the housing is removed.