Factory exhaust manifolds on the 1999.5-2003 7.3L Powerstroke have been through years of heat cycles. The castings crack and warp, studs break, gaskets blow out, and the exhaust leak that follows costs you boost and brings that familiar tick on a cold start. The KC Turbos 302874 kit replaces both manifolds on 1999.5-2003 7.3L Powerstroke Super Duty pickups with a stronger, better-flowing pair.

These manifolds are cast from high-silicon molybdenum iron with thicker walls and mounting flanges than stock, so they hold up to heat without warping and clamp evenly to the cylinder head. Port matched runners help exhaust reach the turbo with less restriction, and the kit bolts on in place of the factory manifolds.

What you get:

• New driver side and passenger side upgraded exhaust manifolds
• Stainless steel manifold gaskets for both sides
• 16 OEM-style interference thread manifold bolts that resist backing out
• Built-in EGT probe port and the factory EBP tube port, each shipped with an NPT plug installed
• Thicker flanges and an enlarged, fully machined sealing surface to reduce hot spots and leaks
• Reworked up-pipe mounting face for better alignment and clamping
• Fits 1999.5-2003 Ford 7.3L Powerstroke pickup trucks

Specs:

• Material: high-silicon molybdenum (High-SiMo) cast iron
• Exhaust flow: over 20% more than stock manifolds, per KC Turbos
• Manifold bolt torque: 45 lb-ft (61 Nm)
• Up-pipe to manifold bolt torque: 18 lb-ft (24 Nm)
• Up-pipe to manifold bolts are not included; the factory hardware is reused

A solid fix for 1999.5-2003 7.3L owners dealing with a leaking or cracked manifold, and a smart upgrade for anyone adding power who wants a clean pre-turbo EGT location. These manifolds are not designed for van applications. KC recommends replacing factory up-pipes that use donut-style gaskets and running a thread chaser through the head's bolt holes before installation. Buy with confidence. Verify fitment for your truck before ordering.