Used Oil Cooler Line 1990–2019

A leaking transmission cooler line is among the most common causes of automatic transmission fluid loss -- and often goes unnoticed. The leak is often slow enough to go unnoticed until the fluid level drops enough to cause shift problems. By then, the transmission has been running low for a while. Oil cooler lines carry engine oil or transmission fluid between the block or gearbox and the remote oil cooler. They operate under moderate pressure and constant temperature cycles. Lines are rubber with crimped steel fittings, or solid steel with rubber end sections. They crack, chafe through, or develop leaks at the crimp fittings. Engine oil cooler line leaks create a fire risk if oil contacts hot exhaust components. Neither leak type should be left to run. Redline carries 12 Oil Cooler Line from 4 sellers across 8 makes including Chevrolet, Honda, Lexus, Infiniti, Mercedes Benz. Lines are vehicle-specific in routing and end fitting type. Filter by year, make, and model -- used OEM cooler lines are a direct-fit replacement that maintains the factory routing without modification.