and high quality Tension Wheel avoids belt slippage, compensate for belt wear and elongation after aging. The noise is small, and it can prevent slipping. Advantages-According to the different degree of tightness of the belt, the tension can be automatically adjusted, to make the transmission system stable, safe and reliable. belt, the tension can be automatically adjusted, to make the Only the best steels are used Use only the best rubber materials roll smoother and longer lasting. Easy to install, but professional installation is highly recommended. Item Type: Belt Tensioner Idler Pulley NO.: 11281748131 Weight [kg]: 0,15 Height [mm]: 24,5 Inner Diameter [mm]: 10 Outer Diameter [mm]: 70 INTERCHANGE PART NUMBERS: 11 28 1 726 343 / 11281726343,11281748131 / 11 28 1 748 131 Manufacturer Part Number: 5320001100 / 11281748131 FOR:BMW E46 325 330 E39 528 530 E53 X5 FITS THE FOLLOWING: 1992-1992 BMW 318I BASE CONVERTIBLE 2-DOOR 1992-1999 BMW 318IS BASE COUPE 2-DOOR 1995-1999 BMW 318TI BASE HATCHBACK 2-DOOR 1992-1995 BMW 320I BASE SEDAN 4-DOOR 2000-2000 BMW 323CI BASE COUPE 2-DOOR 1998-1999 BMW 323I BASE CONVERTIBLE 2-DOOR 1998-1999 BMW 323IS BASE COUPE 2-DOOR 1999-2000 BMW 323TI BASE HATCHBACK 2-DOOR 2001-2005 BMW 325CI BASE CONVERTIBLE 2-DOOR 2001-2005 BMW 325CI BASE COUPE 2-DOOR 2000-2000 BMW 328CI BASE COUPE 2-DOOR 1996-1999 BMW 328I BASE CONVERTIBLE 2-DOOR 1996-2000 BMW 328I BASE SEDAN 4-DOOR 2005-2005 BMW 330I M SEDAN 4-DOOR 1999-2003 BMW 540I BASE WAGON 4-DOOR 2001-2006 BMW X5 3.0I SPORT UTILITY 4-DOOR 2003-2006 BMW X5 4.4I FORMULA 1 SPORT UTILITY 4-DOOR 2002-2006 BMW X5 4.4I LUJO SPORT UTILITY 4-DOOR Material:plastic Colour:black Package Contents: 3 x Belt Tensioner Idler Pulley Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.