This is a Brand New starter for tractors. This replaces the following part numbers: : ESL12587 Used on models: : 450DTC, 520, 520 DTC, 545, 545 DTC, 555, 555 DTC, 665, 665 DTC, 680, 680 DTC ONE YEAR WARRANTY Griggs Lawn & Tractor warranties electrical items to be free from defects in material and workmanship for a period of one year from date of purchase. The manufacture reserves the right to inspect any item prior to granting warranty. We pledge our support in obtaining settlement of reasonable and justifiable claims. Griggs Lawn & Tractor will not assume any responsibility for loss of time, labor, or crop for any warranted parts. After 30 days of the initial purchase, warranty does not cover