Number: GM15 Years: 81-ON Description: TC 12.5" (298mm) DIAMETER, 27 SPLINE, Most Passenger Cars 3.8L, 4.1L, 4.3L, 5.0L, 5.7L, 16K-18K STALL, 10.7" BOLT CIRCLE, (CODES: CE, CE3C, CE4C, CF, CF4C, CF9C, DF, DL ) Input Spline: 27 Pilot Size: 1.700" Hub Type: SLOTS Mount Type: 3 PADS Lock Up: YES Price: $185.00 Refundable Core: $45.00