Home Aircraft Parts 66K6D3SN-04 6 CYL, 20 DEGREE, FIXED TIMING, REV ROT (LYC EIS) 66K6D3SN-04 6 CYL, 20 DEGREE, FIXED TIMING, REV ROT (LYC EIS) 66K6D3SN04 SKU: 66K6D3SN-04 Categories: Aircraft Parts, Cylinders, Engine Parts, Lycoming Tag: cylinder