The 2018 Ram 4000 has 18 suspension parts with verified fitment on this page — 7 part types and 3 brands, covering the 5.7L V8 engine. Each part includes a manufacturer part number and application notes.
The suspension system on the 2018 Ram 4000 controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links. The largest groups are Ball Joint (9 parts), Track Bar Bushing (3 parts) and Sway Bar Link (2 parts). The other 4 part types cover the remaining 4 parts.
The 2018 Ram 4000 came with a single engine, the 5.7L V8, and every part is verified against it.
3 brands supply suspension parts for the 2018 Ram 4000, led by DORMAN (13 parts), FVP (4 parts) and FCS (1 part). Quality grades include Daily Driver and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Ram 4000. 2 parts have it, including DORMAN 539950 (Ball Joint) and DORMAN BJ83335RD (Ball Joint). Each part number opens a page with every vehicle that part fits.
Axle Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 533899 | 🇲🇽 MX | Fits Front ForwardAt Axle Housing | View on Amazon |
This table covers the Axle bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
This group shows a single part: DORMAN 533899.
Ball Joint
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Popular | 539950 | 🇲🇽 MX | Front UpperNon-Articulating Stud - Stud Moves Up and Down | View on Amazon |
| DORMAN Popular | BJ83335RD | 🇲🇽 MX | RD | View on Amazon |
| DORMAN | 539974 | 🇲🇽 MX | Front Lower | View on Amazon |
| DORMAN | 539941 | 🇲🇽 MX | Front UpperNon-Articulating Stud - Stud Moves Up and Down | View on Amazon |
| DORMAN | BJ81116RD | 🇲🇽 MX | RD | View on Amazon |
| DORMAN | 539942 | 🇲🇽 MX | Adjustable | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | BJ81046 | 🇲🇽 MX | Front UpperNon-Articulating Stud - Stud Moves Up and Down | View on Amazon |
| FVP | BJ81116 | 🇲🇽 MX | Front UpperNon-Articulating Stud - Stud Moves Up and Down | View on Amazon |
| FVP | BJ81056 | 🇲🇽 MX | Adjustable | View on Amazon |
This table covers the ball joints that articulate each control arm at the knuckle.
9 Ball Joint parts are listed for the 2018 Ram 4000, from DORMAN and FVP. DORMAN 539950 carries the "Popular" badge.
The Daily Driver section lists 6 options from DORMAN — grouped for everyday commuting duty. DORMAN 539950 is listed in this group.
In the Economy grade, FVP supplies 3 parts: the catalog's value-priced group. A representative part number is FVP BJ81046.
Part numbers include DORMAN 539950, DORMAN BJ83335RD and DORMAN 539974, among others listed above.
Control Arm Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 533899 | 🇲🇽 MX | Fits Front ForwardAt Axle Housing | View on Amazon |
This table covers the bushings pressed into each control arm. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
One part is listed for the 2018 Ram 4000 — DORMAN 533899.
Shock / Strut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FCS | 347490 | 🇲🇽 MX | RearRWD | View on Amazon |
This table covers the shocks and struts that damp wheel motion. Typical signs include a nose that keeps bouncing, cupped tires, or fluid weeping down the body. Replace shocks or struts in axle pairs and renew the mounts if they are torn or collapsed.
One part is listed for the 2018 Ram 4000 — FCS 347490.
Sway Bar Link
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 542599 | 🇲🇽 MX | Rear | View on Amazon |
| DORMAN | 542593 | 🇲🇽 MX | Front | View on Amazon |
This table covers the links that connect the anti-roll bar to each control arm or strut. Typical signs include a clunk on one wheel over a driveway, or a rattle that goes away when you lean on the bar. Replace links in pairs; a seized stud often takes the bushing with it.
DORMAN supplies both parts for the 2018 Ram 4000.
Listed part numbers: DORMAN 542599 and DORMAN 542593.
Track Bar
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 543259 | 🇲🇽 MX | Front | View on Amazon |
This table covers the track bars that locate the axle laterally.
This group shows a single part: DORMAN 543259.
Track Bar Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 540790 | 🇲🇽 MX | FrontBushing Only | View on Amazon |
| DORMAN | 540799 | 🇲🇽 MX | Kit | View on Amazon |
| FVP | BTK81239 | 🇲🇽 MX | Kit | View on Amazon |
This table covers the Track Bar bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
3 Track Bar Bushing parts for the 2018 Ram 4000 come from 2 brands — DORMAN and FVP.
Part numbers include DORMAN 540790, DORMAN 540799 and FVP BTK81239.
Buying Suspension Parts for a 2018 Ram 4000
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- Confirm you have the 5.7L V8 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace shocks and struts in axle pairs, renew the sway-bar links with the struts, and get an alignment after any control-arm or tie-rod work.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Ball Joint and Track Bar Bushing .
Frequently Asked Questions
How many suspension parts fit the 2018 Ram 4000?
Our catalog currently lists 18 suspension parts for the 2018 Ram 4000 across 7 subcategories and 3 brands, covering the 5.7L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of suspension problems on a 2018 Ram 4000?
Common symptoms include clunks over speed bumps, wandering steering, cupped tire wear, or a nose that keeps bouncing after a dip. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace shocks and struts in axle pairs, renew the sway-bar links with the struts, and get an alignment after any control-arm or tie-rod work.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2018 Ram 4000 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2018 Ram 4000?
Every part on this page is matched to the 5.7L V8 engine. Then worn bushings often mimic bad shocks — inspect before buying, and remember loaded vs unloaded strut assemblies differ in labor by hours. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Ram 4000
Suspension Parts for Other Ram 4000 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.