39 Suspension parts are listed for the 2018 International Workstar, in 3 part types, covering all 5 engine options (12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged and 9.3L L6 DIESEL Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2018 International Workstar, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links. All 39 listed parts are Shock / Strut (25 parts), Leaf Spring (11 parts) and Alignment Shim (3 parts).
The 2018 International Workstar was sold with 5 engines. 7 parts fit every engine; the other 32 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2018 International Workstar suspension parts are MONROE (14 parts), HUSKY SPRING (11 parts) and GABRIEL (9 parts), plus 2 more brands. Quality grades include Heavy Duty, Daily Driver and Original Ride Quality.
6 parts on this 2018 International Workstar page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GABRIEL 83135 (Shock / Strut) and GABRIEL 85928 (Shock / Strut). Click any part number to see every vehicle that part fits.
Alignment Shim
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 12.4L L6 DIESEL Turbocharged | 533035 | 🇺🇸 US 🇨🇦 CA | Tractor Truck - Medium Conventional1/32" Thickness | View on Amazon |
| DORMAN Fits: 12.4L L6 DIESEL Turbocharged | 544789 | 🇺🇸 US 🇨🇦 CA | Tractor Truck - Medium Conventional1/16" Thickness | View on Amazon |
| DORMAN Fits: 12.4L L6 DIESEL Turbocharged | 544790 | 🇺🇸 US 🇨🇦 CA | Tractor Truck - Medium Conventional1/8" Thickness | View on Amazon |
This table covers the Alignment shims.
DORMAN supplies the 3 Alignment Shim parts for the 2018 International Workstar.
This group includes DORMAN 533035, DORMAN 544789 and DORMAN 544790.
Leaf Spring
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HUSKY SPRING Fits: 12.4L L6 DIESEL Turbocharged | 551149 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RearWork Star 7600 | View on Amazon |
| HUSKY SPRING Fits: 12.4L L6 DIESEL Turbocharged | 551236 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Leaf Configuration From Top Down: 9 Leaves = 9 Active LeavesLeaf Thicknesses From Top Down (inches or MM): 1@625, 1@590, 7@447 | View on Amazon |
| HUSKY SPRING Fits: 12.4L L6 DIESEL Turbocharged | 551246 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Leaf Configuration From Top Down: 9 Leaves = 9 Active LeavesLeaf Thicknesses From Top Down (inches or MM): 1@660, 1@625, 7@473 | View on Amazon |
| HUSKY SPRING Fits: 12.4L L6 DIESEL Turbocharged | 551248 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Leaf Configuration From Top Down: 8 Leaves = 8 Active LeavesLeaf Thicknesses From Top Down (inches or MM): 1@702, 1@660, 6@527 | View on Amazon |
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HUSKY SPRING Fits: 12.4L L6 DIESEL Turbocharged | 551248HD | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Heavy Duty | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HUSKY SPRING Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 551192 | 🇺🇸 US 🇨🇦 CA | Leaf Configuration From Top Down: 1 Pad Over 2 Leaves Over 1 Pad = 2 Active LeavesLeaf Thicknesses From Top Down (inches or MM): Pad@323, 2@750, Pad@323 | View on Amazon |
| HUSKY SPRING Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 551194 | 🇺🇸 US 🇨🇦 CA | Leaf Configuration From Top Down: 9 Leaves Over Bracket = 9 Active LeavesLeaf Thicknesses From Top Down (inches or MM): 5@527, 4@499, Bracket | View on Amazon |
| HUSKY SPRING Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 551196 | 🇺🇸 US 🇨🇦 CA | Free Arch (inches): 3.5Leaf Configuration From Top Down: 12 Leaves= 12 Active Leaves | View on Amazon |
| HUSKY SPRING Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 551200 | 🇺🇸 US 🇨🇦 CA | Free Arch (inches): 4.1875Leaf Configuration From Top Down: Shockeye Over 8 Leaves Over 3 Pads=8 Active Leaves | View on Amazon |
| HUSKY SPRING Fits: 6.7L L6 DIESEL Turbocharged | 551250 | 🇺🇸 US 🇨🇦 CA | Free Arch (inches): 4.9375Leaf Configuration From Top Down: Shockeye Over 7 Leaves Over 2 Pads = 7 Active Leaves | View on Amazon |
| HUSKY SPRING Fits: 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 551235 | 🇺🇸 US 🇨🇦 CA | Rear Leftwith Tandem Rear Axle, Air Suspension, HOCKEY Stick | View on Amazon |
This table covers the leaf springs that locate and support the axle.
11 Leaf Spring parts for the 2018 International Workstar come from HUSKY SPRING.
In the Daily Driver grade, HUSKY SPRING supplies 4 parts: grouped for everyday commuting duty. A representative part number is HUSKY SPRING 551149.
In the Heavy Duty grade, HUSKY SPRING supplies 1 part: rated for severe service. A representative part number is HUSKY SPRING 551248HD.
6 further parts sit outside the graded sections, with the same engine-level match.
Shock / Strut
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GABRIEL Popular Fits: 12.4L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 83135 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 83000 Series | View on Amazon |
| GABRIEL Popular Fits: 12.4L L6 DIESEL Turbocharged | 85928 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 85000 Series | View on Amazon |
| GABRIEL Popular Fits: all 2018 Workstar engines | 85976 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 85000 Series | View on Amazon |
| MONROE Popular Fits: all 2018 Workstar engines | 65144 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| GABRIEL Fits: all 2018 Workstar engines | 83053 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cab Shock | View on Amazon |
| GABRIEL Fits: all 2018 Workstar engines | 83054 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cab Shock | View on Amazon |
| GABRIEL Fits: 12.4L L6 DIESEL Turbocharged | 85670 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 85000 Series | View on Amazon |
| GABRIEL Fits: 12.4L L6 DIESEL Turbocharged | 83112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 83000 Series | View on Amazon |
| GABRIEL Fits: 12.4L L6 DIESEL Turbocharged | 85957 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 85000 Series | View on Amazon |
| GABRIEL Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 83143 | 🇺🇸 US 🇨🇦 CA | 83000 Series | View on Amazon |
| MONROE Fits: 12.4L L6 DIESEL Turbocharged | 65420 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MagnumGas- 65 | View on Amazon |
| MONROE Fits: all 2018 Workstar engines | 66161 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| MONROE Fits: 12.4L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 66202 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| MONROE Fits: all 2018 Workstar engines | 65145 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| MONROE Fits: 12.4L L6 DIESEL Turbocharged | 65492 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| MONROE Fits: 12.4L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 65478 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MagnumGas- 65 | View on Amazon |
| MONROE Fits: 12.4L L6 DIESEL Turbocharged | 66419 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| MONROE Fits: all 2018 Workstar engines | 65484 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MagnumGas- 65 | View on Amazon |
| MONROE Fits: 12.4L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 65146 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Magnum | View on Amazon |
| MONROE Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 65507 | 🇺🇸 US 🇨🇦 CA | Magnum | View on Amazon |
| MONROE Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 66464 | 🇺🇸 US 🇨🇦 CA | Magnum | View on Amazon |
| MONROE Fits: 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 66648 | 🇺🇸 US 🇨🇦 CA | MagnumGas 60 | View on Amazon |
| MONROE Fits: 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | 66162 | 🇺🇸 US 🇨🇦 CA | Magnum | View on Amazon |
Original Ride Quality
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FCS Popular Fits: 12.4L L6 DIESEL Turbocharged | F347242 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits FrontWorkstar 7600 | View on Amazon |
| FCS Popular Fits: 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged, 9.3L L6 DIESEL Turbocharged | F347241 | 🇺🇸 US 🇨🇦 CA | Frontwith 12,000 lb Front axle | 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.
25 Shock / Strut parts for the 2018 International Workstar come from 3 brands — MONROE, GABRIEL and FCS. The "Popular" part is GABRIEL 83135. 7 parts fit every engine; the other 18 are engine-specific.
Heavy Duty: 23 parts, from MONROE and GABRIEL. A representative part number is GABRIEL 83135.
The Original Ride Quality section lists 2 options from FCS — grouped under the catalog's "Original Ride Quality" designation — the notes column spells out what sets them apart. FCS F347242 is listed in this group.
Buying Suspension Parts for a 2018 International Workstar
On this vehicle, the suspension system controls ride, tire contact and alignment through shocks, struts, control arms, bushings and links.
- Match the engine first. Some suspension parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Shock / Strut and Leaf Spring .
Frequently Asked Questions
How many suspension parts fit the 2018 International Workstar?
Our catalog currently lists 39 suspension parts for the 2018 International Workstar across 3 subcategories and 5 brands, covering all 5 engine options (12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged, 8.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged and 9.3L L6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do suspension parts differ between 2018 International Workstar engines?
Some do. 7 parts fit every engine; the other 32 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of suspension problems on a 2018 International Workstar?
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 International Workstar 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 International Workstar?
First match the engine — each row shows which engine(s) the part fits. 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 International Workstar
Suspension Parts for Other International Workstar Years
Switch vehicle or jump to a subcategory
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.