Product Description

POWERSTROKE PRODUCTS PP-6.4HEADLHDVSO 6.4L HEAD LOADED HD VALVE SPRINGS O-RINGED

The POWERSTROKE PRODUCTS PP-6.4HEADLHDVSO Loaded O-Ring 6.4L Cylinder Head with HD Valve Springs is built for 6.4L owners who only want to do the job once and do it right. Machined for an O-ringed fire ring and assembled with heavy duty valve springs, new valves, and new seals, this head is engineered to keep compression in the cylinders instead of your cooling system while maintaining tight valve control in high-boost, tuned, and towing applications.

Each head starts from a brand-new casting (no core required) and is fully assembled by Powerstroke Products with components matched for longevity and consistent sealing. The O-ring design provides a positive seal around each cylinder, helping prevent combustion gases from pressurizing the coolant and reducing the chances of blown head gaskets when paired with proper fasteners and tuning. Heavy duty valve springs keep the valvetrain under control when you add bigger turbos, injectors, and aggressive calibrations, giving you stable operation at higher cylinder pressures and RPM.

This head is ideal for 2008–2010 Ford 6.4L Powerstroke builds that see hard towing, performance use, or aggressive tuning. Combine it with quality head studs, proper head gaskets (do not use Fel-Pro gaskets with O-ringed heads), and supporting valvetrain parts for a durable top-end package that can handle serious power. A 1-year unlimited mileage warranty backs the assembly, giving you confidence whether the truck is a workhorse, tow rig, or weekend toy.

Features & Benefits

• Loaded O-ring cylinder head for 2008–2010 Ford 6.4L Powerstroke diesel.
• Brand-new casting – no core charge, no reman surprises.
• Machined for O-rings to provide a positive combustion seal around each cylinder.
• New heavy duty valves, springs, and seals installed and set up by Powerstroke Products.
• Designed to work in high-boost and tuned applications where cylinder pressure is significantly higher than stock.
• Sold individually – order two heads for a complete engine top-end.
• 1-year unlimited mileage warranty on the assembly (see manufacturer terms).
• Optimized to use with quality head studs and correct head gaskets (do not use Fel-Pro with O-ringed heads).

Fitment

This POWERSTROKE PRODUCTS cylinder head is built specifically for the 6.4L Ford Powerstroke platform:

• 2008 Ford F-250 Super Duty 6.4L Powerstroke (diesel)
• 2008 Ford F-350 Super Duty 6.4L Powerstroke (diesel)
• 2008 Ford F-450/F-550 Super Duty 6.4L Powerstroke (diesel)
• 2009 Ford F-250 Super Duty 6.4L Powerstroke (diesel)
• 2009 Ford F-350 Super Duty 6.4L Powerstroke (diesel)
• 2009 Ford F-450/F-550 Super Duty 6.4L Powerstroke (diesel)
• 2010 Ford F-250 Super Duty 6.4L Powerstroke (diesel)
• 2010 Ford F-350 Super Duty 6.4L Powerstroke (diesel)
• 2010 Ford F-450/F-550 Super Duty 6.4L Powerstroke (diesel)

Note: This head is sold individually. Two heads are required per engine. Always verify fitment by VIN when possible, especially on cab & chassis or incomplete vehicles.

Recommended Powerstroke Products Pairings (Cross-Reference)

For a matched top-end package using only Powerstroke Products components, consider pairing PP-6.4HEADLHDVSO with these related parts on CPP Diesel:

• POWERSTROKE PRODUCTS PP-6.4HEADLHDVS 6.4L HEAD LOADED HD VALVE SPRINGS – non O-ringed version with HD springs for builds that don’t require an O-ring fire ring.
• POWERSTROKE PRODUCTS PP-6.4HEADLOEM 6.4L HEAD LOADED OEM – loaded OEM-style 6.4L head for stock or mild builds.
• POWERSTROKE PRODUCTS PP-HDVSR HD VALVE SPRING RETAINER (32) 6.0–6.4L – heavy duty retainers to support HD spring pressures and high boost.
• POWERSTROKE PRODUCTS PP-VSS 6.0/6.4L VALVE STEM SEALS (16 PIECES) – premium valve stem seals used in many Powerstroke Products loaded heads.

Installation & Technical Notes

• Professional machine shop inspection and cleaning of block decks is highly recommended before installation.
• Use appropriate head studs or head bolts torqued to manufacturer or tuner specs.
• Do not use Fel-Pro head gaskets with O-ringed heads; they are not designed for this style of fire ring and can fail prematurely.
• Always verify pushrod length, rocker geometry, and piston-to-valve clearance in high-lift camshaft applications.

Frequently Asked Questions

Is this head new or remanufactured?

The PP-6.4HEADLHDVSO head is built from a brand-new casting and assembled with all new valves, seals, and heavy duty valve springs. There is no core charge and no reused OEM castings.

Do I need to order one or two heads for my 6.4L?

This listing is for one loaded cylinder head. A complete engine requires two heads. Many customers order a pair so both banks are matched and refreshed at the same time.

Can I run Fel-Pro head gaskets with this O-ringed head?

No. Fel-Pro head gaskets are not compatible with O-ringed cylinder heads and can lead to sealing issues and warranty denial. Use gaskets that the manufacturer and your engine builder recommend specifically for O-ringed 6.4L heads.

Do I still need head studs with an O-ringed head?

Yes. The O-ring helps keep combustion sealed, but high cylinder pressures from tuning and boost still require quality head studs for clamping force and long-term reliability. The best results are with O-ringed heads, proper gaskets, and a proven stud kit installed correctly.

What kind of power or boost levels is this head designed to handle?

Powerstroke Products builds this head for high-performance 6.4L applications that see elevated boost, towing, and tuning. Exact limits depend on the rest of the combo and tuning, but the O-ring and HD springs are specifically chosen for high cylinder pressure diesel performance builds.

Is there a warranty on this head?

Yes. The PP-6.4HEADLHDVSO comes with a 1-year unlimited mileage warranty from the date of purchase, subject to Powerstroke Products’ terms and conditions regarding installation, tuning, and supporting parts.

Is this product affected by Prop 65?

Yes. WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov.

Specifications for POWERSTROKE PRODUCTS PP-6.4HEADLHDVSO