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OPGI Price: $149.99
Part Type: (R) = Authentic reproduction of the original GM product
Sold As: EACH
One of the rarest, yet "cool" options for the 1970-72 4-4-2's was the W-27 aluminum differential cover option. It held more fluid and was made of aluminum, so it kept the rear gear oil cooler, thereby increasing gear and Posi-life. OPGI is offering two versions of this cover that fit the 1970-72 10-bolt Olds rear end and the 12-bolt heavy rear end. These are top-quality duplicates of the original W-27 rear covers.