High-mileage 5.4L Triton engines push crankcase vapors, oil mist, and moisture through the PCV system and back into the intake manifold, where they cause detonation, carbon deposits on valves, and reduced efficiency across the entire intake tract. Moroso's air-oil separator intercepts those contaminants before they reach the intake, keeping combustion clean and protecting engine internals on 2004-2008 F-150s equipped with the 5.4L.
Large-body capacity for serious crankcase management. The large-body design offers 43% more capture capacity than Moroso's small-body version, making it the right choice for high-load or high-mileage applications. Internal baffling and mesh media work together to strip oil mist and moisture from blow-by gases before filtered vapor continues on to the intake.
Billet aluminum construction with a polished finish. The separator body is machined from billet aluminum and ships with a polished finish that accepts chrome plating, paint, or powder coat for a custom look under the hood. Heavy-duty brass inlet and outlet fittings resist corrosion and seal securely against PCV hose connections.
Virtually mess-free draining. A bottom drain port with an included elbow directs collected oil away cleanly, eliminating the spills common with cap-style drains. The included stainless steel mounting bracket and billet aluminum body clamp provide a secure, vibration-resistant mount.
Everything needed for installation. Each kit includes fuel/emission/PCV vapor hose, brass fittings, a stainless steel mounting bracket, and the billet aluminum body clamp, so no additional hardware is required for a complete install.
Product Benefits
- 43% More Capacity: Large-body design captures significantly more oil mist and moisture than the small-body version.
- Internal Baffling and Mesh Media: Separates oil from crankcase vapors before they re-enter the intake tract.
- Protects Intake Valves: Prevents oil deposits from forming on valves, port walls, and intake manifold surfaces.
- Bottom Drain with Elbow: Collected oil drains cleanly without mess or disassembly of the separator body.
- Billet Aluminum Body: Polished finish accepts chrome, paint, or powder coat for a custom appearance.
- Brass Fittings: Heavy-duty corrosion-resistant inlet and outlet fittings ensure a long-lasting, leak-free connection.
- Complete Hardware Kit: Includes PCV vapor hose, stainless steel bracket, and billet aluminum mounting clamp.
Note: Fits 2004-2008 Ford F-150 with the 5.4L engine.
About Moroso: Moroso Performance Products has manufactured racing and performance components for decades, supplying professional race teams and serious enthusiasts with oil pans, catch cans, vacuum pumps, and ancillary engine components. Their air-oil separator line extends that race-proven engineering to street vehicles seeking cleaner, more efficient intake systems.
WARNING: California Residents: Cancer and Reproductive Harm;
www.p65warnings.ca.gov
Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|---|
| Vehicle Fitment | 2004, 2005, 2006, 2007, 2008 |
