6.7 Cummins CAT Kit Water Separator

🛠️ 6.7 Cummins CAT Fuel Filter Conversion Kit – 3-Micron Spin-On w/ Water Separator, Billet Aluminum Head, High-Flow Design

Upgrade your fuel system for power, durability, and ease of maintenance with the 6.7 Cummins CAT Fuel Filter Conversion Kit. This premium conversion replaces the factory plastic fuel filter housing with a rugged billet aluminum head and a high-quality 3-micron spin-on CAT fuel filter with an integrated water separator—built to handle the demands of high-performance diesel engines.

Designed for a clean and functional install, this kit features factory-style return ports and mounts below the engine block deck, making it fully compatible with side-draft intakes and most dual fueler kits. It’s the perfect upgrade for daily drivers, tow rigs, and high-horsepower street/strip builds.

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🔧 Key Features:

✅ CNC-machined billet aluminum filter head – eliminates OEM plastic failure
✅ Runs a 3-micron CAT spin-on filter with built-in water separator
✅ Prevents plastic cap cracking and improves filtration quality
✅ Mounts below engine deck – allows clearance for side-draft intakes
✅ Compatible with most dual fueler kits
✅ AN-8 O-ring port for second injection pump feed
✅ 1/8” NPT port for fuel pressure monitoring or testing
✅ Factory-style return line connections for OEM-style routing
✅ Quick-connect fuel supply adapter – seamless tie-in to OEM or aftermarket systems
✅ Includes 1/2” high-flow fuel line to CP3 pump
✅ CP3 high-flow adapter fitting included
✅ New CAT 3-micron spin-on fuel filter included

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💡 Why Choose This Kit?

• Replaces failure-prone factory filter housing with billet aluminum

• Easy-to-find CAT filter replacements at most auto parts stores

• Significantly lowers filter replacement costs vs OEM

• Supports high-flow fuel demand for performance and towing

• Cleaner install with factory hard line compatibility

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📦 What’s Included:

• Billet aluminum fuel filter head

• 3-micron CAT spin-on fuel filter w/ water separator

• Quick-connect fuel supply adapter

• 1/2” high-flow fuel line to CP3

• CP3 high-flow adapter fitting

• AN-8 O-ring port & 1/8” NPT fuel pressure port

• Complete installation hardware

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Upgrade your 6.7 Cummins with a smarter, stronger, and more serviceable fuel filter solution. Whether you’re pushing power or hauling loads, this CAT Fuel Filter Conversion Kit delivers the flow, fitment, and reliability your truck deserves.