Dorman 594-121 Harmonic Balancer Direct replacement to ensure proper fit Ships with protective sleeve over cone and trigger to prevent damage (where applicable) Ease of installation with Dormans Harmonic Balancer Puller (594-999) Direct replacement to ensure proper fit Ships with protective sleeve over cone and trigger to prevent damage (where applicable) Ease of installation with Dormans Harmonic Balancer Puller (594-999) A quality part backed by a Dorman limited lifetime warranty