Overview Reviews Product Description Brand-new discontinued NOS GM Oil Cooler Adapter Fittings (2) for 1986-1987 Buick Grand National, Turbo Regal, and 1987 GNX. These genuine GM parts were purchased in bulk and will ship re-bagged. Product Videos Custom Field Product Reviews Write a Review Write a Review × Fittings - Oil Cooler Adapter Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *