Cracked factory manifolds and snapped bolt ears are a familiar story on the 7.3L Powerstroke. Once one lets go, you get the ticking exhaust leak on a cold start, soot on the firewall, and lost boost because exhaust is escaping before it ever reaches the turbo. The BD Diesel 1041473 kit replaces both manifolds on 1999-2003 Ford Super Duty trucks so you can fix the leak once instead of patching it again next season.

BD made the castings thicker than stock and ran the mounting lugs solid all the way to the cylinder head, getting rid of the undercut where factory manifolds tend to crack. Steel gaskets take the place of the composite type that tends to blow out, and the improved port flow sends more exhaust energy to the turbo.

What you get:

• New driver side and passenger side cast iron exhaust manifolds
• Steel OEM-style manifold gaskets for both sides
• All fasteners needed for installation
• One manifold comes drilled and tapped for a pyrometer (EGT) probe, so no drilling is needed to add a gauge
• High temperature paint finish for corrosion resistance
• Fits 1999-2003 Ford F-250, F-350, F-450, and F-550 Super Duty with the 7.3L Powerstroke
• 3 year / 75,000 mile parts warranty from BD Diesel

Specs:

• Manufacturer part number: BD Diesel 1041473 (driver side 1041471, passenger side 1041472)
• Replaces OE: F81Z-9431-AA (driver side), F81Z-9430-AA (passenger side)
• Material: cast iron with 0.275 in. wall thickness, 37.5% thicker than the factory casting
• Exhaust flow: 14% increase over stock, per BD Diesel
• Estimated install time: about 5 hours for both sides, per BD Diesel

This kit is a good fit for high-mileage 7.3L trucks with a leaking or cracked manifold, and for owners who tow and want an EGT gauge without drilling into cast iron. Old manifold bolts on these engines are often rusted or broken, so plan for extra time and tools on the passenger side. Match your OE number and order. Verify fitment for your truck before ordering.