Serpentine Belt Tool Tool Type Serpentine Belt Tool Set Application Releases Tension on Serpentine Belt Self Adjusting Idler Pulley. Material Carbon Steel Overall Length 68 1/2 cm Overall Width 10 cm Vehicle Make/Model/Year Ford 1.9 2.3 3.0 3.8 4.0 4.6L Windstar 3.8LGM 2.2 2.8 3.1 3.8 5.7L engines 3800 engines Quad 4 enginesChrysler 2.5 3.0 3.3 3.8Saturn engines Number of Pieces 8