Check the listing for details. 3 Leaf Parabolic Front Spring 4 Inch Fits Kenworth. Condition: New. Listed at 579.99 USD. 4 Inch 3 Leaf Parabolic Front Spring Fits Kenworth* High Quality Parabolic Spring* 3 Leaf Stack* 4 Inches Wide* 5.000 Inch Arch* 32.000 Inch Inch Short End Of Spring* 32.000 Inch Long End Of Spring* Includes 1 TB68 And 1 MTB160 Spring Bushings* Sold Individually* Warranty On Parabolic Front Springs Against Defects In Workmanship And Material From Date Of Purchase*** High Quality Aftermarket Replacement Part (Not OEM)**** Replaces OE Numbers HK1073-104, K223-1073Fitment * Fits Kenworth C500 2004 thru 2010* Fits Kenworth K100C 1985 thru 1992* Fits Kenworth K100E 1985 thru 1992* Fits Kenworth T300 1993 thru 2008* Fits Kenworth T450 1993 thru 2008* Fits Kenworth T600 1986 thru 1990* Fits Kenworth T600 Aerocab 1994 thru 2007* Fits Kenworth T600B 1990 thru 2003* Fits Kenworth T800 1986 thru Current* Fits Kenworth T800 Curved Glass 1993 thru Current