Part Type: Accessory Drive Belt Tensioner. Belt Tensioner. 2008 Volkswagen Jetta Submodel: GLI; Engine: 2.0L L4 GAS; EngineCode: CBFA; For Alternator and A/C Belt; Includes NTN/NSK bearing;. 2008 Volkswagen Jetta Submodel: GLI; Engine: 2.0L L4 GAS; EngineCode: CCTA; For Alternator and A/C Belt; Includes NTN/NSK bearing;.