The Powerstroke Products PP-7.3LH-OEM is a brand-new, fully assembled loaded cupless cylinder head engineered for 1999–2003 7.3 Powerstroke diesel engines. Cast from brand-new virgin iron rather than a reworked core, this head eliminates core returns and the risk of microscopic core fatigue cracks. Powerstroke Products delivers this unit fully assembled with new valves, guides, seals, and stock-rate OEM valve springs. It features an integrated cupless injector cavity cast and CNC-machined directly into the solid cast iron, permanently removing factory press-in injector sleeves from the engine.

Cracked factory cylinder heads, fuel entering the cooling system or degas bottle from ruptured sleeve compound, and coolant leaking past aged injector cup O-rings are what this head permanently cures. On OEM 7.3 cylinder heads, thin brass injector cups are pressed into coolant jackets; over decades of heat cycling and cylinder pressure, the retaining compound degrades, causing fuel-in-coolant contamination or hydraulic hydrolock. By machining the injector seat directly into solid cast iron, this head eliminates the need for press-in cups, special sleeve retaining compounds, or cup installation tools while maintaining stock valvetrain geometry and spring tension for dependable daily towing. It is sold as a single loaded cylinder head; two heads are required for a complete engine overhaul, and head studs/bolts, gaskets, pushrods, and rocker arms are sold separately.

It fits 1999–2003 7.3 Powerstroke Ford Super Duty trucks, Excursions, and E-Series vans.

Fitment

• 1999–2003 Ford F-250 Super Duty 7.3L Powerstroke
• 1999–2003 Ford F-350 Super Duty 7.3L Powerstroke
• 1999–2003 Ford F-450 / F-550 Super Duty 7.3L Powerstroke
• 2000–2003 Ford Excursion 7.3L Powerstroke
• 1999–2003 Ford E-Series Vans 7.3L Powerstroke
• Brand-new cylinder head casting (no core charge or core return required)
• Cupless design permanently eliminates failure-prone press-in brass injector cups
• Assembled with brand-new valves, guides, seals, and stock-rate OEM valve springs
• Direct drop-in replacement for factory cylinder heads
• Uses standard HEUI fuel injectors and factory injector O-rings
• Single loaded cylinder head only (two required per engine)

Thoroughly clean the engine block deck and chase all female block bolt holes dry of oil and coolant before setting the head over the block alignment dowels. When dropping in standard HEUI fuel injectors, lubricate the injector body O-rings generously with clean engine oil and push straight down into the cast iron bore; never apply sleeve retaining compounds or Loctite, as the iron cavity is solid and requires no cups. Torque new cylinder head bolts or heavy-duty head studs in the factory spiral pattern across multiple progressive stages strictly following the fastener manufacturer’s recommended torque specifications and lubrication guidelines.