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Call or Text (352) 722-5295Suspension components on the 2004.5-2007 RAM 5.9L Cummins
The third-generation Dodge Ram HD puts a link-coil solid axle under the front of the 5.9L Cummins, located by upper and lower trailing arms and a two-eye track bar, with leaf springs out back. Components are the parts you change one at a time: a worn bushing, a tired shock, or an add-on like air helper springs or traction bars that bolts on without changing ride height.
What wears out
Most of the wear on this front end happens at the joints. Track bar bushings and the frame-end joint let the axle shift side to side, which shows up as wander, clunk and death wobble. Ball joints and hub bearings are the known weak links of the 2003-2009 front end. Upper and lower control-arm bushings wear at high mileage and let the axle move fore and aft, felt as a clunk on braking or acceleration. Out back, the leaf springs sag under fifth-wheel and gooseneck loads. When you chase a wobble, the steering damper (52122370AB) and track bar often get replaced together, but do the on-the-ground test first: have a helper saw the wheel while you watch each joint for movement.
Stock replacement vs. upgrade
A track bar with worn bushings but a tight frame-end joint can go back in service with a bushing kit. Once the frame-end joint is worn, replace the bar. For towing, air helper springs with an onboard compressor are the upgrade that controls rear sag, and Bilstein shocks are the usual partner.
What we carry
- Air Lift LoadLifter 5000, 5000 Ultimate and 7500XL helper spring kits, WirelessONE compressor and tank kits, WirelessAIR app control, a heavy-duty dual load controller, Ultimate Plus stainless steel upgrades, an air spring cradle, angled spacers and air hose.
- Bilstein B6 4600 and B8 5100 series shocks, front and rear.
- Wehrli Custom Fabrication 60-inch and 68-inch traction bars, complete traction bar kits, bracket and hardware install kits, and bushings and heims.
- BD Diesel traction bar kit, sway bar end links, an end link bushing kit and a replacement bushing kit.
- BDS Suspension fixed traction bars, a front sway bar link kit for 2-4 inch lifts and a front sway bar link disconnect kit.
- Fleece Performance Engineering low profile shock mounts.
Fitment notes
Check drivetrain first. Most of the Bilstein shocks and all of the BDS parts here are listed for 4WD, and Bilstein lists a separate rear shock for 2WD. The BD Diesel traction bar kit is listed for trucks without air suspension, and the BDS fixed traction bars are listed for 2500 trucks with a 3.5-inch axle. Front-end parts for 2003 and later do not cross to the 1994-2002 trucks, though some shocks are listed for both. On a 2007, confirm the truck has the 5.9L and not the 6.7L, which arrived in trucks built after January 1, 2007. Verify by VIN when unsure.
Frequently asked questions
Should I replace the track bar or just the bushings?
If the bushings are worn but the frame-end joint is tight, a bushing kit can put the bar back in service. If the frame-end joint has play, the bar needs replacing. Check it with the truck on the ground while a helper saws the steering wheel back and forth.
How do I pick the right Bilstein shock?
Bilstein uses separate part numbers by position and drivetrain, and each title here spells out front or rear, 2WD or 4WD, and the years. Match all three. If the truck is leveled or lifted, call us before you order so the shock suits the new ride height.
Do air helper springs raise my towing capacity?
No. They level the truck and control rear sag under fifth-wheel and gooseneck loads, which is the common hauling complaint on this generation. They do not change the truck's ratings, so stay within the numbers on your door sticker.
Not sure what fits? Call the shop at the number in the header, or use the fitment checker on any product page. We install everything we sell.