1998 Acura TL 2.5L 13810P1R003 Harmonic Balancer Crankshaft Pulley. Part Number: 13810P1R003 13810-P1R-003 13810 P1R 003. Other Part Number: 13810P1R003. It is essential in engines with long crankshafts and is present on most engines as it reduces torsional vibrations that tend to peak at certain speeds.