MANUFACTURER PART NUMBER: R38RS55263. SIERRA 1500 HD CLASSIC SLT 8 CYL 6.0L 2007 WITH FRONT COIL SPRING. Replaces Part Numbers & Specifications PRODUCT TYPE: SHOCK ABSORBER AND STRUT ASSEMBLY. SIERRA 1500 CLASSIC SLT ALL ENGINES 2007 WITH FRONT COIL SPRING, WITH 0 IN.