21 Steering parts are listed for the 2018 Freightliner Cascadia, in 7 part types, covering all 5 engine options (11.9L L6 Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
The steering system on the 2018 Freightliner Cascadia connects driver to road through the rack, pump, tie rods, and column components. The largest groups are King Pin Set (6 parts), O-Ring (4 parts) and Power Steering Filter (4 parts). The other 4 part types cover the remaining 7 parts.
The 2018 Freightliner Cascadia was sold with 5 engines. 13 parts fit every engine; the other 8 are engine-specific. Each part shows which engine(s) it fits.
7 brands supply steering parts for the 2018 Freightliner Cascadia, led by MEVOTECH (9 parts), ELRING (5 parts) and HASTINGS / BALDWIN (2 parts), plus 4 more brands. Quality grades include Daily Driver and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 Freightliner Cascadia. 2 parts have it, including MEVOTECH MS95988 (King Pin Set) and MEVOTECH MS95987 (King Pin Set). Each part number opens a page with every vehicle that part fits.
Center / Drag Link
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH Fits: all 2018 Cascadia engines | MS43936 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MEVOTECH Fits: all 2018 Cascadia engines | MS95938 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH Fits: all 2018 Cascadia engines | GS43936 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
This table covers the Center / Drag links. Typical signs include a clunk over a driveway lip, or a rattle from the bar. Replace links in pairs; a seized stud often takes the bushing with it.
3 Center / Drag Link parts for the 2018 Freightliner Cascadia come from MEVOTECH. Every part fits all 5 engine options (11.9L L6 Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL Turbocharged).
In the Daily Driver grade, MEVOTECH supplies 2 parts: grouped for everyday commuting duty. A representative part number is MEVOTECH MS43936.
The Economy section lists 1 option from MEVOTECH — the catalog's value-priced group. MEVOTECH GS43936 is listed in this group.
This group includes MEVOTECH MS43936, MEVOTECH MS95938 and MEVOTECH GS43936.
King Pin Repair Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON Fits: all 2018 Cascadia engines | 300414 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Detroit Alliance Front Axle | View on Amazon |
This table covers the King Pin repair kits.
One part is listed for the 2018 Freightliner Cascadia — DAYTON 300414.
King Pin Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH Popular Fits: all 2018 Cascadia engines | MS95988 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MEVOTECH Popular Fits: all 2018 Cascadia engines | MS95987 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MEVOTECH Fits: all 2018 Cascadia engines | MS95996 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
| MEVOTECH Fits: all 2018 Cascadia engines | MS95989 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeContains Pre-Sized Metal Bushings | View on Amazon |
| MEVOTECH Fits: all 2018 Cascadia engines | MS959106 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeContains Pre-Sized BI-Metal Bushings | View on Amazon |
| MEVOTECH Fits: all 2018 Cascadia engines | MS959105 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Supreme | View on Amazon |
This table covers the King Pin sets.
6 King Pin Set parts for the 2018 Freightliner Cascadia come from MEVOTECH. The "Popular" part is MEVOTECH MS95988. Every part fits all 5 engine options (11.9L L6 Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL Turbocharged).
This group includes MEVOTECH MS95988, MEVOTECH MS95987 and MEVOTECH MS95996 and the remaining parts above.
O-Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 12.8L L6 DIESEL Turbocharged | 003881 | 🇺🇸 US 🇨🇦 CA | Inner Diameter [MM]: 146.5 | View on Amazon |
| ELRING Fits: 12.8L L6 DIESEL Turbocharged | 003900 | 🇺🇸 US 🇨🇦 CA | Inner Diameter [MM]: 131.5 | View on Amazon |
| ELRING Fits: 14.8L L6 DIESEL Turbocharged | 653770 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Inner Diameter [MM]: 155 | View on Amazon |
| ELRING Fits: 14.8L L6 DIESEL Turbocharged | 653760 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Inner Diameter [MM]: 138.5 | View on Amazon |
This table covers the O-rings that seal this joint. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.
4 O-Ring parts for the 2018 Freightliner Cascadia come from ELRING.
Part numbers include ELRING 003881, ELRING 003900 and ELRING 653770, among others listed above.
Power Steering Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DONALDSON Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged, 15.6L DIESEL Turbocharged | P573482 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Outer Diameter: 67.5 mm (2.66")Length: 89.1 mm (3.51") | View on Amazon |
| HASTINGS / BALDWIN Fits: all 2018 Cascadia engines | PT23629 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Engine Code X15 | View on Amazon |
| HASTINGS / BALDWIN Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged | HF1007 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WIX Fits: 15.6L DIESEL Turbocharged | R88525C | 🇺🇸 US 🇨🇦 CA | Cartridge Filter | View on Amazon |
This table covers the Power Steering filters. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
4 Power Steering Filter parts for the 2018 Freightliner Cascadia come from 3 brands — HASTINGS / BALDWIN, DONALDSON and WIX. 1 part fits every engine; the other 3 are engine-specific.
Part numbers include DONALDSON P573482, HASTINGS / BALDWIN PT23629 and HASTINGS / BALDWIN HF1007, among others listed above.
Steering Gear Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Fits: 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged | 651250 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the seals at the Steering Gear Housing. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
This group shows a single part: ELRING 651250.
Tie Rod Assembly (Inner & Outer)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MONROE Fits: all 2018 Cascadia engines | TR10040 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front63.6 (In) Length | View on Amazon |
| MONROE Fits: all 2018 Cascadia engines | TR10042 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front68.3 (In) Length | View on Amazon |
This table covers complete inner-and-outer tie-rod assemblies.
MONROE supplies both parts for the 2018 Freightliner Cascadia. All of them fit every engine offered in the 2018 Cascadia.
Part numbers include MONROE TR10040 and MONROE TR10042.
Buying Steering Parts for a 2018 Freightliner Cascadia
On this vehicle, the steering system connects driver to road through the rack, pump, tie rods, and column components.
- Match the engine first. Some steering 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 the inner and outer tie-rod ends together on higher-mileage vehicles, then get an alignment.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: King Pin Set and O-Ring .
Frequently Asked Questions
How many steering parts fit the 2018 Freightliner Cascadia?
Our catalog currently lists 21 steering parts for the 2018 Freightliner Cascadia across 7 subcategories and 7 brands, covering all 5 engine options (11.9L L6 Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do steering parts differ between 2018 Freightliner Cascadia engines?
Some do. 13 parts fit every engine; the other 8 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 steering problems on a 2018 Freightliner Cascadia?
Common symptoms include play or looseness on center, a whine when turning, fluid weeping from rack boots, or uneven tire wear on the front axle. 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 the inner and outer tie-rod ends together on higher-mileage vehicles, then get an alignment.
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 Freightliner Cascadia 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 Freightliner Cascadia?
First match the engine — each row shows which engine(s) the part fits. Then flush old power-steering fluid when replacing a pump or rack — grit in the old fluid is the number-one cause of repeat failure. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Freightliner Cascadia
Steering Parts for Other Freightliner Cascadia 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.