Mishimoto misMMOC-GTO-04T

Mishimoto thermostatic oil cooler kit for 2004–2006 Pontiac GTO (5.7L/6.0L) uses a 25-row stacked-plate cooler and an in-line oil thermostat to regulate oil near 185°F. The kit includes a hard-mount thermostat bracket and a line adapter for AN stainless lines; testing without the thermostat showed a 65°F oil temperature reduction. Mishimoto backs the kit with its Lifetime Warranty.