2011-2016 F-150 3.5L , 2015-2017 Expedition/Navigator 3.5L, 2013-2024 Transit Full-Race Formline Turbo Manifolds FORMLINE-F150-11

Make More Power. Avoid Costly Repairs.
Full-Race Formline® Turbo Manifolds for the GEN1 3.5L EcoBoost.
The Full-Race Formline® Turbo Manifolds are a direct replacement for the failure-prone factory exhaust manifolds on the 2011–2016 Ford F-150 EcoBoost. OEM cast iron manifolds are known to warp, crack, and leak under high exhaust temperatures, leading to performance loss, annoying chirping sounds, and expensive repairs.

Formline® Turbo Manifolds address these OEM shortcomings head-on. Crafted from advanced 347 stainless steel, they’re built to withstand exhaust temps up to 1740°F (950°C) without warping or cracking, delivering unmatched durability for heavy towing, spirited driving, and everything in between. And unlike 304 stainless, which is often used in motorsport applications, 347 stainless offers even greater resistance to high-temperature fatigue and corrosion, making it better suited for the long-term demands of the EcoBoost platform. Plus, the ½” thick flanges also provide improved strength and sealing over the OEM’s thinner ⅜” design.

But we didn’t stop at better materials—Formline® manifolds are engineered for serious performance gains. A 32% larger outlet perfectly matches the turbocharger inlet, while individually optimized 30mm runners reduce backpressure and improve turbo efficiency. The result? Faster spool-up, increased horsepower, and stronger torque throughout the powerband.

These manifolds are a 100% bolt-on replacement that utilize factory mounting points. No cutting, drilling, or custom modifications required. Every set also includes our A286 Inconel Stud Kit, eliminating the common hardware issues that cause leaks in OEM setups

Application:
2011-2016 Ford F-150 EcoBoost 3.5L

2015-2017 Ford Expedition EcoBoost 3.5L

2015-2017 Lincoln Navigator EcoBoost 3.5L

2013-2024 Ford Transit EcoBoost 3.5L

Features & Benefits
Advanced 347 Stainless Steel Construction
Cast from premium 347 stainless steel—an alloy trusted in jet engines and refinery equipment—offering exceptional heat resistance and durability up to 1740°F (950°C). Outperforms both OEM cast iron and 304 stainless.

Upgraded Flange Design
Warped flanges are one of the most common causes of exhaust leaks. ½” thick flanges (vs. OEM’s ⅜”) provide a stronger seal, resist distortion, and prevent exhaust leaks over time.

Increased Flow Capacity
Features a 32% larger outlet (34.5mm) that perfectly matches the turbo inlet, plus individual 30mm runners per cylinder to reduce backpressure and improve turbo response.

Direct Bolt-On Fitment
Installs easily using factory mounting points—no cutting, drilling, or custom fabrication required.

Designed to Fit Larger Turbos
Unlike other manifolds that struggle with turbo fitment, Formline® manifolds are engineered to seamlessly fit both OEM and larger turbochargers, offering better compatibility and enhanced flow for upgraded setups.

Inconel Hardware Kit Included
Formline® manifolds include A286 Inconel studs and nuts—a high-strength alloy originally developed for jet engines. These studs resist stretching, corrosion, and fatigue, ensuring long-lasting, leak-free performance under extreme conditions.

Power Gains & Efficiency
Improved exhaust flow directly translates to increased horsepower, torque, and faster turbo spool-up for better engine response and performance.

Limited Lifetime Warranty
We stand behind our manifolds with a limited lifetime warranty against manufacturing defects.

CARB Emissions Exempt (EO# D-898)
Fully legal for street use in all 50 states, including emissions-restricted areas like California.