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New to "Ford Truck Enthusiasts", great site, I've learned quite a bit from.
I have just acquired a 2000 F250, 7.3L, 4x4. Getting to know my way around it, however I've run into something I know nothing about really. I've attached a photo of it, maybe someone here knows something of this branding of an Automatic Transmission TURBO BRAKE, logo appears to have an arrow style design of it.
Thank you for the link over to that B&D Brake, it seems by looking through their manual, I should be able to confirm it's usage/purpose and do a test of the system. That's a good start for me, really appreciate your response.
At first I thought it was a trans brake for drag racing. But the more I look into it, it looks to be a no-longer-produced exhaust brake system.
With a fixed vane turbo like the 7.3 has, I'm not entirely certain how it would work...because usually you need to either have a valve added to the exhaust after the turbo, or a variable-vane turbo, to increase the back pressure.
The 7.3L does have a valve after the turbo. It's closed when the engine is cold to help warm up times. This item probably closes that valve to provide engine brakingThe 7.3L does have a valve after the turbo. It's closed when the engine is cold to help warm up times. This item probably closes that valve to provide engine brakingThe 7.3L does have a valve after the turbo. It's closed when the engine is cold to help warm up times. This item probably closes that valve to provide engine braking.
The 7.3L does have a valve after the turbo. It closes when the engine is cold to help with warm up times. This unit probably controls that valve, and may also apply the coast clutch in some gears to provide engine/transmission braking.
Last edited by Mark Kovalsky; Nov 21, 2025 at 02:56 PM.
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
Automatic Transmission Brake
