Ford Engine Crankcase Vent Valve (CDR) 4C3Z-6A665-AC | 6.0L Powerstroke + Free Install Video

Ford Engine Crankcase Ventilation Valve (CDR) — 4C3Z-6A665-AC
Protect your 6.0L Power Stroke engine from one of the most well-known chains of failure. This crankcase vent valve (commonly referred to as the CDR valve) regulates crankcase pressure and separates oil vapor from the air before it re-enters the intake system. When it malfunctions or becomes clogged, engine oil is drawn into the intake manifold, leading to excessive oil consumption, carbon buildup, and in the worst cases, cylinder head gasket failure due to overheating.
This is a well-known maintenance item in the 6.0L Power Stroke community; many owners replace it preventatively every other oil change to avoid bigger problems down the road.

🎥 FREE Step-by-Step Installation Video Included
No special tools needed — just basic hand tools and a few minutes. Our free installation video shows you the exact steps so you can get it right the first time. Key Features

Original Ford Part No: 4C3Z-6A665-AC (Replaces 4C3Z-6A665-AA, 4C3Z-6A665-AB, 4C3Z-6A665-BA, 6E7Z-6A665-AA)
Suitable for 2003-2010 Ford 6.0L Power Stroke diesel vehicles
Direct OEM replacement part, no modifications required
Free installation video guide included
Signs You Need a New CDR Valve

Oil film or vapor visible in the air filter housing or intake manifold
Increased oil consumption without visible leaks
Gray/white smoke during operation
Oil residue on the air filter mounting bolt
Vehicle Compatibility
Ford F-250, F-350, F-450, F-550 Super Duty, E-350 Super Duty, E-450 Super Duty and Excursion — 2003-2010, 6.0L Power Stroke Diesel Engine
Please verify your VIN number before ordering to ensure full compatibility with over 1,074 supported vehicle configurations.

Package Contents

1 x Ford Crankcase Ventilation Valve/CDR Adapter (4C3Z-6A665-AC)
🎥 Access to installation video guide

✅ Original Ford OEM | 📦 Fast Worldwide Shipping | 🎥 Free Installation Video | ⚡ Shipped within 1-2 Business Days