Performance Headers for Ford F250 F350 (2003-2007) 6.0L

Stop tolerating the ticking sound of exhaust leaks and the smell of raw diesel in your cabin every time your engine warms up.

Performance Stainless Steel Exhaust Manifold Upgrade for Ford Super Duty (6.0L Powerstroke)

If you own a 6.0L Powerstroke, you’re likely familiar with the "cold start tick." The factory cast-iron manifolds on these trucks are notorious for failing due to extreme thermal cycling. Because the 6.0L runs high EGTs (Exhaust Gas Temperatures), especially when towing or running a tuner, the stock units eventually warp or develop hairline fractures. This leads to lost boost pressure, decreased fuel economy, and that annoying soot buildup all over your engine bay.

This upgraded manifold set is engineered specifically to address those OE weak points. By utilizing high-grade stainless steel construction, these units offer superior thermal stability compared to the brittle factory iron. We’ve focused on the vulnerable areas of failure, strengthening the flanges and wall thickness to ensure the manifold remains flat against the cylinder head, even under heavy load. This isn't just a replacement; it's a permanent fix for a known chassis-specific headache.

Built for the 6.0L Turbo Diesel F-250 and F-350 Super Duty lineup, these manifolds provide a leak-free seal that restores lost turbo spool and keeps your power levels consistent on the road or the job site.

Why You Need This Upgrade

• Stainless Steel Construction: High-grade material resists the warping and cracking common in factory cast-iron units during heavy towing.
• Strengthened Critical Areas: Redesigned in known failure zones to handle the extreme expansion and contraction of the Powerstroke engine.
• Direct Bolt-On Fit: Engineered as a direct replacement for a seamless installation without the need for custom fabrication.
• Complete Installation Kit: Includes two high-quality exhaust manifold gaskets to ensure a gas-tight seal from day one.
• Restored Turbo Efficiency: By eliminating exhaust leaks, you ensure maximum drive pressure reaches the turbocharger for better throttle response.

Installation Notes

Replacing manifolds on a 6.0L can be a "right of passage" for owners. While these are direct replacements, we highly recommend using new mounting hardware (bolts/studs) as the originals are often heat-cycled and prone to snapping during removal. Ensure the cylinder head surface is thoroughly cleaned of old gasket material and carbon before bolting down the new stainless units. No ECU tuning is required for this mechanical upgrade.

Replaces These OEM Applications & Part Numbers

• 2003-07 Ford F250 Super Duty Truck V8 6.0L Turbo Diesel Exhaust Manifold
• 2003-07 Ford F350 Super Duty Truck V8 6.0L Turbo Diesel Exhaust Manifold

3C3Z-9430-AA, 3C3Z-9431-AA, 674-942, 674-943

Ditch the soot and the cracks—upgrade to stainless steel and keep your 6.0L Powerstroke breathing properly for the long haul.

Common Questions

Will these exhaust manifolds fit my 2003-2007 Ford F-250 or F-350 with the 6.0L Powerstroke?
Yes, this stainless steel manifold set is a direct bolt-on replacement for 2003-2007 Ford F-250 and F-350 Super Duty trucks equipped with the 6.0L Powerstroke V8 turbo diesel engine.

Which engine is this manifold set made for?
This manifold set is engineered specifically for the 6.0L Powerstroke V8 turbo diesel engine.

What is included in the kit?
The kit includes both heavy-duty stainless steel exhaust manifolds and two exhaust manifold gaskets. Using new mounting bolts or studs is recommended since factory hardware is often heat-cycled.

Do I need custom fabrication or ECU tuning to install these?
These manifolds bolt directly in place of the factory cast-iron units without custom fabrication, and no ECU tuning is required.

Which OEM Ford part numbers does this set replace?
This set replaces factory Ford exhaust manifold part numbers 3C3Z-9430-AA and 3C3Z-9431-AA.