956A1216G01 is a precision aviation maintenance tool compliant with AS9100D standards and FAA/EASA regulations, dedicated to aircraft engine cooling systems for ground support and routine MRO operations. Forged from high-strength anti-corrosion alloy steel with heat-resistant and wear-resistant plating, it withstands -55℃ to 200℃, resisting coolant erosion, high-temperature radiation and intense engine vibration for stable, long-lasting performance during frequent use. Specialized in disassembling, installing and calibrating cooling pumps, radiators and coolant pipeline joints, it features precision-machined non-damaging ends with tight tolerances to avoid leaks and cooling inefficiency, critical for preventing engine overheating. Compact and ergonomic, it fits confined engine bays, meets strict aviation specs, streamlines workflows, cuts ground downtime, safeguards cooling system integrity, and serves as an indispensable tool for aircraft engine reliability and overall flight safety.