BD Diesel 1043001 Exhaust Manifold Kit 3.5L EcoBoost High-Silicon Ductile Iron 11-Stud

The BD Diesel 1043001 exhaust manifold kit is a replacement exhaust manifold for the Ford 3.5L EcoBoost gas engine. It addresses a known weakness of the factory design: the cylinder head has threaded holes for 11 exhaust studs, but the OE manifold uses only 8 of those locations. That can contribute to warped manifolds, broken exhaust studs and blown manifold gaskets.

BD's manifold uses all 11 stud locations, improves exhaust flow and adds durability. It is cast from thicker-walled, high-silicon ductile iron to resist thermal warping.

Key Features:

• Uses all 11 exhaust stud locations, 3 more than the OE manifold
• Thick-wall, high-silicon ductile cast iron resists thermal warping
• Average flow increase of 25.9 percent (OEM average 110 cfm per port, BD average 139 cfm per port)
• Kit includes 22 exhaust spacers and 22 class 8.8 studs to further improve thermal durability
• New studs, spacers and nuts included; studs are 15mm longer than stock and used with spacers
• Replaces Ford OEM part numbers BL3Z-9430-B, BL3Z-9430-D, BL3Z-9431-B and BL3Z-9431-D

Emissions and Certification:

• Covered under CARB EO D-553-18 and D-553-27, and legal for sale and use in all 50 states
• SEMA Certification No. SC-BDD01-0069
• US Patent Number US-D1061621-S

Install Time: approximately 8 hours.

BD also suggests the optional 1043002 as an addition to this kit.