New Pair Ford 6.0 Turbo Diesel 20mm Cylinder Heads O-Ring Upgrade With Performance Pushrods

New Ford 6.0L Powerstroke O-Ring Cylinder Head & Heavy-Duty Pushrod Combo

Premium O-Ringed Cylinder Head Upgrade with Performance Pushrods

Restore your engine’s mechanical integrity with this pair of all-new Stage II 20mm O-ringed 6.0L Powerstroke cylinder heads, specifically engineered for late 2006–2010 Ford Super Duty and Excursion applications. These fresh, high-density castings feature a precision-machined O-ring upgrade, utilizing a stainless steel wire to create a secondary mechanical seal that bites into the head gasket—drastically reducing the risk of combustion leaks under the extreme cylinder pressures of high-output turbo diesel environments. This performance package comes fully loaded with nitride-treated valves for superior heat resistance under high boost. Although the gasket surfaces are pre-milled, every unit undergoes an in-house precision verification to ensure the Surface Roughness (Ra) meets the strict requirements for modern MLS gaskets. We perform final guide sizing and multi-angle valve seat cutting on our Rottler equipment to ensure perfect valvetrain geometry and a 100% airtight seal. Pressure tested to 60 PSI, these 20mm-dowel heads provide a professional-grade solution for ‘bulletproof’ performance and long-term combustion integrity.

🛠️ In-House Machining Process

• Debris-Free Preparation: Every new casting is chemically cleaned and blown out to remove all residual machining oils, metal shavings, and manufacturing debris. This ensures your oiling system remains uncontaminated from the first start-up.

• In-House Precision Machining: Unlike “shelf-stock” heads, we perform all final machine work in-house. This includes final guide sizing and precision valve seat cutting to ensure perfect geometry and clearances before the head reaches the assembly bench.

• Pressure & Integrity Testing: To go beyond the factory standard, we pressure-test every head to 60 PSI. This verifies that the casting is free of porosity leaks or internal defects that could compromise the cooling or oiling systems.

• Dimensional Inspection: Our technicians perform a multi-point inspection of the gasket-sealing surface and bore alignment. This ensures the head is perfectly flat and meets tight OEM tolerances for a flawless fit.

• Professional Assembly & Setup: Valvetrain components are installed and verified in a clean-room environment. We check spring heights and seal seating to ensure the assembly is balanced and ready for high-performance use.

• Vacuum-Seal Verification: Every intake and exhaust port is Vacuum Tested. This guarantees a 100% airtight seal between the valves and seats, ensuring maximum compression and peak performance right out of the box.

📊 Technical Specifications

• Engine Size: 6.0L V8 Turbo Diesel
• Dowel Size: 20mm
• Material: High-Strength Cast Iron (Head) / .080″ Wall Thickness Steel (Pushrods)
• Condition: Brand New (No Core Charge)
• Upgrade Feature: Integrated Steel O-Rings for Enhanced Sealing
• Pushrod Body Diameter: .344″
• Pushrod Length: 9.795″
• Core Return Required
• Part Numbers:
  • ELGIN: PR642, PR662
  • FORD: 8C3Z6565B
  • NAVISTAR: 1873916C2
• Each Cylinder Head Includes: Valves and Springs Installed
• Additional Hardware: Performance Pushrods

🚛 Fitment Data

Common Applications:

• Ford E-350: 2006–2010 Ford E-350 (6.0L V8 Turbo Diesel)
• Ford F-250 Super Duty: 2006–2007 Ford F-250 Super Duty (6.0L V8 Turbo Diesel)
• Ford F-350 Super Duty: 2006–2007 Ford F-350 Super Duty (6.0L V8 Turbo Diesel)