HX40 Flange

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🛠️ HX40 4.00" Turbo Outlet Flange – Mild Steel Weld Flange for 2nd Gen S300 Downpipes This HX40 4.00" Flange is designed for 2nd Gen Dodge Cummins trucks running S300 turbos with a n HX40-style outlet. CNC-cut from mild steel, this weld-on flange provides a durable, high-flow connection point for custom 4" downpipe fabrication. With a 4.00" outer diameter, it’s perfect for welding directly to 4" exhaust tubing, while also allowing 3.50" pipe to slip inside the bore for cleaner, more versatile fabrication. 🚀 Key Features & Benefits:✅ Fits HX40-Style Outlets on 2nd Gen S300 Turbos✅ 4.00" OD – Matches standard 4" exhaust pipe✅ 3.50" Tubing Fits Inside – Ideal for slip-fit or stepped builds✅ Mild Steel Construction – Weld-ready and cost-effective✅ Great for Custom Downpipes, Race Rigs, and Street Builds✅ Designed for High-Temp, High-Boost Diesel Applications 📦 What’s Included: (1) HX40 4.00" Mild Steel Weld Flange — 🔥 Build your downpipe right from the turbo out. Durable, weldable, and ready for boost—order your HX40 flange today. Show more