Ford 6.7L Power Stroke Exhaust Manifolds: The Complete Guide (2011–2019)

The 6.7L “Scorpion” is a workhorse, but its factory manifolds are known to warp, crack, and lose clamp load after years of heat-soak and towing. This guide explains why it happens, what BD changed in our hi-silicon ductile iron design, fitment by model year, and how to install for a one-and-done repair.

Quick Summary: 75% thicker high-silicon ductile castings • longer studs + spacers across all 8 cylinders • thicker machined flanges • CFD-driven ports with documented flow gains (’11–’14: +9.3% avg; ’15–’19: +8.1% avg) • fully EGR-compatible • 50-state legal (CARB EO D-553-17) • gaskets included.

Why Stock Manifolds Fail (and the Symptoms You’ll See)

  • Thermal cycling: Uneven wall thickness and short fasteners concentrate stress. Over time the casting warps and the seal opens up.
  • Clamp load loss: Short studs and thin flanges don’t maintain preload after heat-soak. Exhaust leaks start—first as a cold tick, later a constant leak.
  • Real-world symptoms: cold-start tick, exhaust odor under hood, slower turbo spool, higher drive pressure/EGT on grades, and broken studs during removal.

BD’s Fix: Thicker Casting, Smarter Hardware, Better Flow

  • 75% thicker walls (≈0.275") in high-silicon ductile iron to resist warping and cracking.
  • Longer exhaust studs + thick spacers across all 8 cylinders to improve thermal durability and retain clamp load.
  • Thicker machined bolting flanges for stable joint compression.
  • CFD-designed runners with verified gains: ’11–’14 average 189 cfm/port (vs OEM 173), ’15–’19 average 174 cfm/port (vs OEM 169). Ports are gasket-matched on ’15–’19.
  • Fully EGR compatible, POR-15 high-temp coating, and all gaskets included (manifold, crossover, EGR port). ’15–’19 kit adds an M8 stud install tool.
  • Legal everywhere: 50-state legal (CARB EO D-553-17). SEMA Cert: SC-BDD01-0050.

Which Kit Fits My 6.7L Power Stroke?

Years / Configuration What to Buy Highlights
2011–2014 F-250/F-350/F-450/F-550 BD Manifold Kit (’11–’14) Avg flow +9.3% (173→189 cfm/port) • Hi-Si ductile casting • longer studs/spacers • gaskets included • 50-state legal
2015–2019 F-250/F-350/F-450/F-550 BD Manifold Kit (’15–’19) Avg flow +8.1% (169→174 cfm/port) • gasket-matched ports • includes M8 stud install tool • gaskets included • 50-state legal
Driver Side (Scorpion turbo kit users) Driver Side Kit Optimized for BD Scorpion layouts • includes 16 studs + spacers for kit use • 50-state legal
Passenger Side (2011–2014) Passenger Side (’11–’14) Avg flow +9.3% • studs, spacers, gaskets included • 50-state legal
Passenger Side (2015–2019) Passenger Side (’15–’19) Avg flow +8.1% • gasket-matched ports • M8 stud tool included • 50-state legal

Notes: Replaces OEM: DC3Z9430A/DC3Z9431A (’11–’14); FC3Z9430B etc. (’15–’19). Trucks using an MPD budget SXE turbo kit must use PN 1043006 with an OEM passenger side manifold.

Install Overview & Real-World Tips

Estimated install time: ~9 hours (typical). Follow your service manual and BD instructions for sequence and torque specs.

  • Penetrant & prep: Soak fasteners, especially rear ports. Have stud extractors ready; broken OEM studs are common.
  • Surface check: Clean/inspect head sealing surfaces. Dry-fit gaskets and verify port alignment (’15–’19 are gasket-matched).
  • Hardware matters: Use BD’s longer studs and spacers on all cylinders; they’re designed to hold clamp load through heat cycles.
  • Tightening pattern: Center-out, criss-cross. Re-torque after first full heat cycle once cooled.
  • EGR & crossover: New gaskets are included. Verify EGR tube seating and crossover alignment before final torque.

Warranty & Compliance

  • Warranty: 36 months / 75,000 miles (parts).
  • Emissions: 50-state legal (CARB EO D-553-17); SEMA Certification SC-BDD01-0050.
  • Finish & durability: POR-15 high-temp black coating resists corrosion; hardware is black-oxide coated.

FAQ

Will these manifolds change power or spool?
Expect restored seal, steadier drive pressure, and improved consistency under load. Documented average flow gains help turbo efficiency—especially on tuned/towed trucks.

Are they EGR compatible?
Yes. All kits are fully EGR compatible and include the correct EGR port gaskets.

Do I need additional hardware?
No. Kits include the longest stud and spacer set for all cylinders plus manifold, crossover, and EGR gaskets. The ’15–’19 kit adds an M8 stud install tool.

Ready to fix the tick for good?
• BD Manifold Kit — 2011–2014
• BD Manifold Kit — 2015–2019
• Passenger Side — 2011–2014 • Passenger Side — 2015–2019
• Driver Side Kit (Scorpion setups)
6.7L Power Stroke Exhaust Manifolds Tick Fix Tow & Heat EGR Compatible 50-State Legal

Always verify torque specs and procedures in the product’s installation instructions and your Ford service manual. Re-torque after the first complete heat cycle for long-term sealing.