This is a simplified late‑production oil cooler for the 1/48 Ki‑84 Hayate. The part represents the later‑type cooler that began appearing from approximately serial number 2000 onward, although production did not fully transition and earlier‑style units continued to be installed on some airframes. Since this simplified version is molded as a single piece, no assembly is required, and printing costs have been reduced. It replaces the kit parts B3, B5, and L23, but unlike the detailed version, this model has not been print‑tested and has only been reviewed on screen. It is intended for modelers who prefer a lower‑cost, assembly‑free option and understand that minor adjustments may be required due to the lack of physical test printing. The part is designed as a direct replacement and should fit with minimal modification depending on the kit.