Part Type: Accessory Drive Belt Tensioner Assembly. 1997 Ford F-250 Engine: 5.4L V8 GAS;EngineVIN: L; Smooth; w/o A.C.;. 1999 Ford F-250 Engine: 5.4L V8 GAS;EngineVIN: L; Smooth; w/o A.C.;. 1998 Ford F-250 Engine: 5.4L V8 GAS;EngineVIN: L; Smooth; w/o A.C.;.