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Earl's billet side mount oil cooler adapters are the slick way to add an oil cooler to your GM LS or Gen-V LT engine. The slim design of these adapters clear most headers and other components and feature -10 AN male connections. These adapters are black anodized and use O-Ring seals for a leak free installation. Choose from a standard adapter or one with a thermostat (212 degree is standard & optional 210 thermostat is available separately).