2003-2013 Cummins Add-A-Leaf Pack (8516-02-400)-Add-A-Leaf-Synergy MFG-8516-02-400-Dirty Diesel Customs
2003-2013 Cummins Add-A-Leaf Pack (8516-02-400)-Add-A-Leaf-Synergy MFG-8516-02-400-Dirty Diesel Customs

2003-2013 Cummins Add-A-Leaf Pack (8516-02-400)

Synergy MFG

Part Number: 8516-02-400

Mfr Part Number:

Sale price$828.00 CAD

This product ships for free to most Canadian locations! Learn more.
(show all inventory)
Available at alternate warehouse - contact for price
This is a special order item, please allow for additional processing time. If you would like an ETA, please reach out prior to placing your order.


    Year Make Model Trim
    2003-2010 Dodge Ram 2500 SLT, ST
    2003-2003 Dodge Ram 2500 Laramie
    2003-2010 Dodge Ram 3500 ST, Laramie, SLT
    2005-2010 Dodge Ram 2500 Laramie
    2006-2007 Dodge Ram 2500 Sport, TRX4
    2006-2007 Dodge Ram 3500 Sport
    2006-2010 Dodge Ram 2500 Power Wagon
    2007-2007 Dodge Ram 3500 TRX4
    2008-2010 Dodge Ram 3500 SXT
    2008-2010 Dodge Ram 2500 SXT
    2010-2010 Dodge Ram 2500 TRX
    2011-2012 Ram 3500 ST, SLT, Laramie Longhorn, Laramie
    2011-2013 Ram 2500 ST, SLT, Laramie Longhorn, Laramie
    2012-2013 Ram 2500 Outdoorsman
    2013-2013 Ram 2500 Lone Star, Tradesman, Big Horn


    This Synergy Add-A-Leaf Pack for your Cummins improves ride quality on both on and off-road driving, includes all necessary hardware, and most importantly; bolt-on installation!

      • For 11.5" AAM Rear End w/4" Axle Tube w/Dual Center Pin
      • Progressive 5 leaf design replaces the factory overload spring for improved ride quality both on and offroad
      • Eliminates the harsh spring rate ramp-up caused by overload engagement
      • High-quality 9/16" E-coated U-bolts, F436 extra thick hard washers and GR8 tall nuts included


      • 8516 Add-a-leaf packs dual center pin
      • 1/2"-20 UNFX6.0 inch long replacement center pins
      • 9/16"-18 UNFX4.0 inchX11 inch long HD E-coated U-bolts
      • 9/16"-18 UNF GR8 tall nuts
      • 9/16" ASTM F436 hard washer extra thick
      • The installation of this pack will affect the truck's load-carrying characteristics when the factory overload is removed. You will notice more squat in the rear when carrying heavy loads. If large loads are frequently hauled, we suggest adding some form of airbag kit in conjunction with this kit for optimum ride and load-carrying characteristics.