BD Diesel 1043003 Exhaust Manifold Driver Side for 2011-2016 Ford 3.5L EcoBoos

Vehicle Fitment

• 2011-2016 Ford F-150 (All Trims, 3.5L EcoBoost)
• 2015-2017 Ford Expedition (All Trims, 3.5L EcoBoost)
• 2011-2014 Lincoln Mark LT (All Trims, 3.5L EcoBoost)
• 2015-2017 Lincoln Navigator (All Trims, 3.5L EcoBoost)
• 2015-2023 Ford Transit-150/250/350/350 HD (All Trims, 3.5L EcoBoost)

Fitment Notes

• Driver side (left) exhaust manifold designed for 3.5L EcoBoost gas engines in specified vehicles. 
• Direct replacement for OE manifolds; uses factory exhaust connections and mounting locations. 
• Includes longer studs and spacers for improved clamp-down and thermal durability. 
• Sold individually - passenger side manifold is a separate part.

  Features

  • Driver side exhaust manifold engineered for durability and performance
  • Thick-wall high-silicon ductile cast iron resists thermal warping and cracking
  • Utilizes additional factory exhaust stud locations for improved manifold clamping
  • Includes 15 mm longer exhaust studs and matching spacers for secure installation
  • Improved exhaust flow characteristics compared with stock manifold design
  • Black high-temperature coating for corrosion resistance
  • Designed as a high-quality replacement for worn or damaged OEM manifolds
  • Direct bolt-on installation using existing mounting points

  Specifications

  • Brand: BD Diesel
  • Manufacturer Part Number: 1043003
  • Application: Exhaust manifold - driver (left) side
  • Engine Compatibility: 3.5L EcoBoost twin-turbo gas
  • Material: Thick-wall high-silicon ductile cast iron
  • Finish: Black high-temperature coating
  • Fitment Position: Left/driver side exhaust manifold
  • Warranty: Manufacturer limited warranty

  Included Components

  • 1x Driver side exhaust manifold
  • Exhaust studs (extended length)
  • Matching spacers for manifold studs

  Product Description

  The BD Diesel 1043003 Exhaust Manifold Driver Side is a direct-fit replacement designed for Ford vehicles equipped with the 3.5L EcoBoost engine from 2011 through 2016 and select later Transit models. This heavy-duty manifold is engineered from thick-wall high-silicon ductile cast iron to resist the thermal stress and warping that can affect factory manifolds. The driver side unit improves long-term durability and provides a reliable foundation for your exhaust system.

  Unlike the original manifold that only uses a portion of the available stud locations, the BD Diesel design takes advantage of additional threaded holes in the cylinder head and includes longer studs with spacers to ensure a strong, even clamp-down across the exhaust flange. This helps reduce the risk of leaks and stud breakage over time while enhancing exhaust flow and heat control. Whether replacing a failed OEM manifold or upgrading for improved strength and performance, the 1043003 offers a robust solution for your EcoBoost-powered Ford truck or SUV.