WIDELY COMPATIBLE: PHILTOP Lift Supports Shock Struts Replacement for M3 2001-2006, please Comfirm our products are compatible with your car. #Adapted position# ( Install Front Hood) PARAMETER: Extended Length(in): 1244 In ; Compressed Length(in): 839 In ; Stroke Length(in): 405 In # OE PART NUMBER # 51237893236, SG402047 SMALL STATURE, BIG ENERGY: Our gas strut bar has the advantages of compact size, large lifting force, stable lifting force and simple assembly. To provide users with a solid support force, to eliminate the dangerous hidden danger of unstable support. QUICK INSTALLATION: Easy to assemble. After repeated tests, most people take less than five minutes to install this product. At the same time, using our gas strut products, the side barn doors open and close with less effort, no impact phenomenon, smooth action, no noise and other advantages WORKING PRINCIPLE: Pneumatic series gas springs are powered by high-pressure inert gas, the supporting force is constant throughout the working stroke, and have a cushioning mechanism to avoid the impact in place, which is the most superior to ordinary springs, and has the advantages of easy installation, safe use without maintenance PHILTOP Lift Support Shock Struts Main Informations Adapted Position Install Front Hood left and right Fitment M3 2001-2006 OE TSG402047 Part Number 51237893236, SG402047 Parameter Extended Length 12.44 In. Compressed Length 8.39 In. Stroke Length 4.05 In. Stroke Length 4.05 In.