🔘Vehicle Fitment: For Airboat With Overall Size Of 31''W X 21''H Universal Radiator For Cross-Flow Style 31'' X 21'' Note: All Aluminum Airboat Radiator With Upper Right Inlet And Lower Left Outlet, Heavy Duty Tall Side Channels For Secure Mounting, No Fill Neck 🔘Radiator Configuration: Brand Name: CFOTIXAR Condition:100% New High Performance Racing Spec. 4-Row of tubes Core Racing Design Material: AA5052 Aluminum Core Dimensions: 26 1/4" x 18" Overall Dimensions: 31" x 21" Inlet Diameter: 1 1/2" Outlet Diameter: 1 3/4" OEM Style Brass Petcock Drain 🔘CFOTIXAR Radiator: Key Benefits 【Built with AA5052 aircraft-grade aluminum – tougher against corrosion】 【Brazed core tech = max performance and reliability】 【2mm-thick AA5052 tanks/fittings: built to take abuse】 【CNC-machined billet aluminum fill neck – rugged, no weak spots】 【Ergonomic CNC cap with engraved detail + anodized finish】 【OE-spec fit – drops right in, no hassle】 【High-density core: 3/8" row spacing = 25% more rows than standard aluminum radiators】 【14-16 fins per inch (≈1,500 more than others) – blasts heat faster】 【30-45% more efficient than stock. Extra coolant capacity = better cooling under race-day temp spikes】 AA5052 series aluminum outperforms T-3303 significantly. AA5052 (Al-Mg alloy): good corrosion resistance, reliability, cold workability, strength. Mg-alloyed with high formability; used in aircraft fuel tanks, oil pipes, transport/ship sheet metal, hardware, electrical casings. T-3303: poor polishability, softness, scratch/corrosion prone, low heat dissipation. Long-term high-P/T operation leads to quick leakage. Yet >90% aftermarket use due to low cost/availability.