The Koyorad Aluminum Radiator model VH010665N is a high-performance radiator designed for the 1996-2002 Toyota 4Runner with either a 2.7L I4 or a 3.4L V6 engine, specifically for manual transmission models. This product is from Koyorad's Hyper V-Core series, which is the latest addition to their all-aluminum racing radiator lineup.Key features of the Koyorad VH010665N include:NFLO Triple Pass Technology: This technology directs coolant in three different directions through the radiator core, which is strategically partitioned to ensure complete core coverage. This improves the efficiency of the cooling process over traditional OEM single-pass radiators.High-Density Hyper Core: The core is 36mm thick, offering a 44% increase over the OEM unit. This high-density core, made from Koyorad?s high-density tubes and fins, enhances the vehicle's heat capacity and endurance, especially under extreme usage conditions.All-Aluminum Construction: Ensures durability and efficient heat dissipation, with a brushed aluminum finish for an aesthetically pleasing look.TIG Welded and Furnace Brazed: Guarantees longevity and endurance of the radiator under high-performance demands.Billet Aluminum Filler Neck and Drain Plug: These components are designed for reliability and ease of use.Compatibility: The radiator is compatible with OEM fans, hoses, and mounting provisions, which means it can be installed without any modifications to these components.Triple Pressure Tested: Each radiator is tested three times during the manufacturing process to ensure product reliability and performance.OEM Style Side Mounting Brackets: Included for ease of installation.