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Authorized COBB dealer. Genuine COBB Tuning parts at COBB pricing. Expert install available in Thousand Oaks, CA — questions? Chat with Senna or call our Mustang specialist.
The COBB Turbo Blanket limits the amount of heat transferred from your turbocharger into the engine bay, while keeping hotter exhaust gases exiting the system faster through decreased density. Limiting transferred heat extends the life of under-hood components, decreases intake temperatures, and improves throttle response.
It is constructed with a fragmentized fire-retardant volcanic-rock outer layer (rated 1,500°F direct heat / 1,800°F radiant heat) and internally insulated with high-temperature calcium-magnesium-silicate wool (rated 1,800°F direct heat / 2,300°F peak heat).
Why a turbo blanket? Insulating the turbine housing prevents the dissipation of useful exhaust energy, improving turbo RPM acceleration — faster spool and quicker time to peak torque — while limiting heat soak to neighboring components.
| Part Number | 8F3650 |
| Type | Turbocharger heat blanket |
| Outer Layer | Fragmentized fire-retardant volcanic rock |
| Outer Rating | 1,500°F direct / 1,800°F radiant |
| Inner Insulation | Calcium-magnesium-silicate wool |
| Inner Rating | 1,800°F direct / 2,300°F peak |
| Compatibility | Stock or stock-replacement turbochargers |
| UPC | 700424677986 |
| Weight | 5.1 lb |
| Brand | COBB Tuning |
Fits the 2017–2020 Ford F-150 3.5L EcoBoost — Raptor and Limited — with stock or stock-replacement turbochargers.
2017–2020 Ford F-150 Raptor / Limited / 3.5L EcoBoost — stock or stock-replacement turbochargers.
Not an emissions-related part — legal for use on emission-controlled vehicles.
The S550 EcoBoost responds hard to the right parts — and COBB has spent more time on this platform than anyone. From the Accessport ecosystem to bolt-on intakes, exhaust, and suspension, it is proven, repeatable hardware. That is why we stock it.
Want the work done by techs who build EcoBoost Mustangs every week? Drop the car in Thousand Oaks. Prefer to install it yourself? Every COBB part ships with clear instructions and direct-fit hardware.
Authority: Charles Siritho · McLaren Artura Trophy owner · spotter for Branden Sorensen FD Pro · 10+ yrs S550 / S650 Mustang specialist · Thousand Oaks, CA



Accessports, intakes, exhaust, and suspension for the EcoBoost Mustang and beyond — genuine COBB pricing, expert install in Thousand Oaks.