Sinister Diesel® SD-COOLFIL-7.3-C - Coolant Filtration System

Features

• CNC-machined 6061 billet aluminum filter block – precision-built and anodized in Sinister Blue for strength and corrosion resistance
• Genuine CAT coolant filter – ultra-efficient filtration trusted in heavy-duty diesel applications
• Pre-assembled high-temp silicone hoses with brass crimp fittings – factory-tested for leak-free performance at twice the pressure of a stock radiator cap
• Factory-style mounting bracket – installs to existing holes with no drilling or cutting required
• Continuously filters small amounts of coolant while the engine runs – removes casting sand, rust, and metal particles
• Extends the life of vital components like the EGR cooler, oil cooler, water pump, and heater core
• Simple, spin-on filter replacement design for easy maintenance
• Backed by a 1 Year Warranty

Product Details

Coolant Filtration System by Sinister Diesel®. W/ CAT. Protect your 7.3 Powerstroke’s cooling system and extend the life of your engine with the Sinister Diesel Coolant Filtration Kit featuring a genuine CAT filter. Designed specifically for 1999.5–2003 Ford Super Duty and Excursion models, this kit removes harmful casting sand, rust, and metal debris that circulate through the coolant system and can lead to premature failure of key components like the water pump, heater core, and oil cooler. The system uses a bypass design that filters small amounts of coolant at a time until the entire system is clean—without restricting coolant flow or risking overheating. The CNC-machined 6061 billet aluminum filter block mounts directly to factory holes for a clean, no-drill installation, and the Sinister Blue anodized finish provides corrosion resistance and a signature look. This kit includes a genuine CAT coolant filter for industry-leading filtration efficiency and long service intervals. Pre-assembled silicone hoses with brass crimp fittings ensure a precise, leak-free fit and a professional finish.