Fit for: For DODGE RAM 1500 Mega Cab 2WD, 4WD 2006-2008 For DODGE RAM 2500 Cab-Chassis 2WD, 4WD 2004-2008 For DODGE RAM 2500 2WD, 4WD 2003-2009 For DODGE RAM 3500 Cab-Chassis 4WD 2006-2009 For DODGE RAM 3500 2WD, 4WD 2003-2009 For RAM 2500 2WD, 4WD 2010-2012 For RAM 2500 2WD, 4WD 2013-2013 For RAM 3500 Cab-Chassis 4WD 2010-2012 For RAM 3500 4WD, 2WD 2010-2012 For FORD F250 2WD 2005-2007 For FORD F350 2WD 2005-2007 For FORD F250 4WD 2005-2007 For FORD F350 4WD 2005-2007 For FORD F250 4WD, 2WD 1999-2004 For FORD F250 4WD, 2WD 2008-2010 For FORD F350 4WD, 2WD 1999-2004 For FORD F350 4WD, 2WD 2008-2010 OE/Part number: W21-760-6401, W217606401 Replacement for Firestone 6401 Features: 1、OEM Product: Easy to install 2、Test more than 3,000,000 times: Durable and Safe 3、24 hours air tightness test ≤0.02MPa: Air Tightness Guarantee 4、Temperature Range ≥ -40℃/ ≤ 70℃: Premium Natural Rubber MaterialItem  Specifications: Part Type: Air Suspension Spring Placement on Vehicle: Rear Quantity: 2 pieces (for rear right and left side) Length, width and height (in/cm): 22*21*21cm Gross weight: 2.46Kg Stroke: 265mm Max Extended: 300mm Min height: 100mm Min. Compressed: 35mm Design height: 185mm Air port size: G1/4 Single Port Condition: 100% brand new Warranty: 1-year warranty for any manufactured defect Accessories: You will get exactly as shown in the picture above Our brand is maXpeedingrods, all products made in our own factory with more than 10 years experience