X0304 4 2012-03-13 0 0000868780 Dorman Products, Inc. DORM 0001544245 ARACE LOU C/O DORMAN PRODUCTS, INC. 3400 EAST WALNUT STREET COLMAR PA 18915 0 1 0 0 SVP, Supply Chain Common Stock 2012-03-13 4 A 0 5000 0.00 A 5000 D Employee Stock Option (Right to Buy) 45.42 2012-03-13 4 A 0 10000 0.00 A 2022-03-13 Common Stock 10000 10000 D The option vests in five equal annual installments beginning on March 13, 2013, which is the first anniversary of the date of grant. The filing of this Statement shall not be construed as an admission (a) that the person filing this Statement is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of any equity securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person. /s/ Lou Arace 2012-03-15