Restore Factory Performance with Genuine Engineering This authentic 7L3Z6A666A PCV valve fitting is the definitive solution for restoring your crankcase ventilation system to peak operation. Crafted from specified blue thermoplastic, it outperforms aftermarket rubber fittings by resisting heat-induced brittleness and oil degradation that cause vacuum leaks. The precision-molded design replicates OEM flow rates (14-22 CFM at 20inHg) to maintain critical pressure balance in: Turbocharged engines (preventing compressor oil contamination) Modular V8/V10 powerplants (reducing top-end carbon buildup) Commercial diesel applications (managing blow-by in high-mileage fleets) Vehicle Compatibility You Can Trust F-Series Trucks: 2010-2020 F-150; 2011-2019 F-250/F-350/F-450/F-550 Super Duty Vans/Chassis: 2007-2019 E-150/E-250/E-350/E-450; 2011-2019 F-53/F-59 Note: Verify engine compartment configuration—some 5.4L V8s require an adapter harness (sold separately) Technical Superiority Material: Glass-reinforced PA66 nylon Temperature Rating: -40°F to +250°F continuous exposure Pressure Tolerance: 25 PSI cyclic / 50 PSI burst Sealing: Integrated Viton O-ring (pre-greased) Dimensions: 67mm height × 26mm diameter (2.64"×1.02") Installation Best Practices Disconnect the negative battery terminal Remove old fitting using pliers on hex base (DO NOT twist hoses) Clean the mating surface with brake cleaner Press the new fitting until an audible "click" confirms full seating Recheck after 500 miles for secure retention Why This Beats Competitors Matches the blue OEM color for authenticity 30% thicker wall construction vs. generic copies Prevents check engine lights (P052E/P053F codes)