Powerstroke Products Loaded O-Ring 6.7L Head With HD Springs (Left)

The Powerstroke Products Loaded O-Ring Cylinder Head with Heavy-Duty Valve Springs (Left), part number PP-6.7FHhdvsLeft-O, is engineered for performance-focused 2011–2016 Ford 6.7L Powerstroke builds. This upgraded cylinder head is ideal for drivers planning future power increases while maintaining long-term reliability.

Featuring a precision-machined O-Ring design and upgraded heavy-duty valve springs, this head is built to support higher cylinder pressures and advanced engine modifications. It allows compatibility with performance upgrades such as larger injectors, aftermarket turbochargers, and more aggressive tuning strategies.

This unit arrives fully assembled with valves, seals, and heavy-duty valve springs installed, making it ready for installation on the left (driver) side of the engine. A one-year unlimited mileage warranty provides added confidence once installed. Please note that o-ring cylinder heads are not compatible with Fel-Pro head gaskets.

Features:

• O-Ringed Cylinder Head Design
• Loaded Assembly with Valves, Seals, and Heavy-Duty Valve Springs
• Designed for Left (Driver) Side Installation
• Supports High-Performance Engine Modifications
• 1-Year Unlimited Mileage Warranty