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New high strength 12.9 propeller shaft / driveshaft bolts for R180 differential on 1970-78 Nissan 240Z, 260Z, 280Z. These are stock replacement bolts that are class 12.9 (OE is 10.9) about 20% stronger than stock. Includes allen head bolts, lock washers & nuts. Set of 4. These bolts connect the driveshaft from the transmission to the rear diff.
