This page lists 43 steering parts for the 2018 GMC Acadia, across 13 part types, covering the 3.6L V6 engine. Every part shows its brand, manufacturer part number and fitment notes.
The steering system on the 2018 GMC Acadia connects driver to road through the rack, pump, tie rods, and column components. The largest groups are Tie Rod End (22 parts), Steering Gear Bolt (5 parts) and Knuckle (4 parts). The other 10 part types cover the remaining 12 parts.
The 2018 GMC Acadia came with a single engine, the 3.6L V6, and every part is verified against it.
8 brands supply steering parts for the 2018 GMC Acadia, led by GM GENUINE (22 parts), MEVOTECH (6 parts) and DORMAN (4 parts), plus 5 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 GMC Acadia. 6 parts have it, including GM GENUINE 11610468 (Steering Gear Bolt) and DELPHI TA6437 (Tie Rod End). Each part number opens a page with every vehicle that part fits.
Coupling Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 84885922 | 🇺🇸 US 🇨🇦 CA | Outer | View on Amazon |
This table covers the Coupling boots. Typical signs include a split boot, grease flung around the joint, or a click once grit is inside. A boot caught early is a kit. Once the joint has clicked, the joint itself is usually worn.
One part is listed for the 2018 GMC Acadia — GM GENUINE 84885922.
Knuckle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 84560116 | 🇺🇸 US 🇨🇦 CA | Front Right | View on Amazon |
| GM GENUINE | 84560115 | 🇺🇸 US 🇨🇦 CA | Front Left | View on Amazon |
| GM GENUINE | 26503836 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
| GM GENUINE | 26503837 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
This table covers the steering knuckles that carry the hub, caliper and ball joints.
GM GENUINE supplies the 4 Knuckle parts for the 2018 GMC Acadia.
Listed part numbers: GM GENUINE 84560116, GM GENUINE 84560115 and GM GENUINE 26503836, plus the other parts above.
Power Steering Assist Motor / Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 86598740 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Power Steering Assist Motor modules. Typical signs include a cluster of unrelated faults, a no-communication code, or a module that will not sleep. Confirm power, ground and programming compatibility in the notes. Modules are rarely plug-and-play across years.
One part is listed for the 2018 GMC Acadia — GM GENUINE 86598740.
Power Steering Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 918304 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| SKP | SK918304 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the Power Steering coolers. Typical signs include overheated fluid, a leak at the fittings, or mixed fluids in the reservoir. Flush the lines when you replace a cooler.
2 Power Steering Cooler parts for the 2018 GMC Acadia come from 2 brands — DORMAN and SKP.
Part numbers include DORMAN 918304 and SKP SK918304.
Rack and Pinion
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 85692882 | 🇺🇸 US 🇨🇦 CA | Electric | View on Amazon |
This table covers the steering gear assemblies that turn the tie rods. Typical signs include fluid at a torn boot, a growl when you turn, or play that the inner tie rods do not explain. Flush the old power-steering fluid with the rack — grit in the old fluid is the usual cause of a repeat leak.
One part is listed for the 2018 GMC Acadia — GM GENUINE 85692882.
Rack and Pinion Bellow
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 23214221 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the rubber boots that seal the inner tie-rod joints on the rack.
This group shows a single part: GM GENUINE 23214221.
Rack and Pinion Bellow Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 07840234 | 🇺🇸 US 🇨🇦 CA | 67mm Diameter | View on Amazon |
This table covers the Rack and Pinion Bellow clamps.
One part is listed for the 2018 GMC Acadia — GM GENUINE 07840234.
Steering Column
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 85529026 | 🇺🇸 US 🇨🇦 CA | Supplemental Restraint System Compliant: YES | View on Amazon |
| GM GENUINE | 85561701 | 🇺🇸 US 🇨🇦 CA | Power Retractable Tilt Steering Column (N38)Exc. Electric Steering Column Lock Control (N06) | View on Amazon |
This table covers the steering columns.
GM GENUINE supplies both parts for the 2018 GMC Acadia.
This group includes GM GENUINE 85529026 and GM GENUINE 85561701.
Steering Column Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 84625122 | 🇺🇸 US 🇨🇦 CA | Power Retractable Tilt Steering Column (N38) | View on Amazon |
This table covers the Steering Column control modules.
This group shows a single part: GM GENUINE 84625122.
Steering Column Switch Housing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 39088759 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Steering Column Switch housings.
This group shows a single part: GM GENUINE 39088759.
Steering Gear Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular | 11610468 | 🇺🇸 US 🇨🇦 CA | M12 X 1.75 X 60 mm | View on Amazon |
| GM GENUINE | 11589277 | 🇺🇸 US 🇨🇦 CA | M12X1.75X66 | View on Amazon |
| GM GENUINE | 11547541 | 🇺🇸 US 🇨🇦 CA | M12 X 1.75 X 173.90Lower Horizontal Mount | View on Amazon |
| GM GENUINE | 11547542 | 🇺🇸 US 🇨🇦 CA | Upper Vertical Mount | View on Amazon |
| GM GENUINE | 11548952 | 🇺🇸 US 🇨🇦 CA | BELT TENSION ACCESS COVER | View on Amazon |
This table covers the Steering Gear bolts.
GM GENUINE supplies the 5 Steering Gear Bolt parts for the 2018 GMC Acadia. GM GENUINE 11610468 carries the "Popular" badge.
Part numbers include GM GENUINE 11610468, GM GENUINE 11589277 and GM GENUINE 11547541, among others listed above.
Steering Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE | 85554371 | 🇺🇸 US 🇨🇦 CA | End 1 Type: U-Joint | View on Amazon |
This table covers the Steering shafts.
One part is listed for the 2018 GMC Acadia — GM GENUINE 85554371.
Tie Rod End
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | TA6437 | 🇺🇸 US 🇨🇦 CA | Right Outer | View on Amazon |
| DELPHI Popular | TA6436 | 🇺🇸 US 🇨🇦 CA | Left Outer | View on Amazon |
| MEVOTECH Popular | MS506111 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeGreaseable | View on Amazon |
| SUSPENSIA Popular | X07TE0078 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right OuterDenali | View on Amazon |
| SUSPENSIA Popular | X07TE0079 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left OuterDenali | View on Amazon |
| ACDELCO | 45A7193 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| DELPHI | TA6488 | 🇺🇸 US 🇨🇦 CA | Inner | View on Amazon |
| GM GENUINE | 87853961 | 🇺🇸 US 🇨🇦 CA | Inner | View on Amazon |
| GM GENUINE | 87853956 | 🇺🇸 US 🇨🇦 CA | End 1 Thread Diameter (In): 0.55 In | View on Amazon |
| GM GENUINE | 87853957 | 🇺🇸 US 🇨🇦 CA | End 1 Thread Diameter (In): 0.55 In | View on Amazon |
| MEVOTECH | MS50779 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeIncludes Hardware | View on Amazon |
| MEVOTECH | MS506112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | SupremeGreaseable | View on Amazon |
| MOOG | EV801639 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Inner | View on Amazon |
| MOOG | ES801409 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left Outer | View on Amazon |
| MOOG | ES801410 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right Outer | View on Amazon |
| SUSPENSIA | X06TR0199 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Inner | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 543845 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Inner | View on Amazon |
| DORMAN | 544621 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Left Outer | View on Amazon |
| DORMAN | 544622 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Right Outer | View on Amazon |
| MEVOTECH | GS50779 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
| MEVOTECH | GS506111 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
| MEVOTECH | GS506112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Original Grade | View on Amazon |
This table covers the inner and outer tie-rod ends that steer each front knuckle. Typical signs include play on center, a feathered front tire, or a boot that has split and packed with grit. Replace inner and outer ends together on a high-mileage axle, then get an alignment.
22 Tie Rod End parts for the 2018 GMC Acadia come from 7 brands — MEVOTECH, DELPHI, SUSPENSIA and 4 other brands. The "Popular" part is DELPHI TA6437.
In the Daily Driver grade, DELPHI, MEVOTECH, SUSPENSIA and 3 other brands supply 16 parts: grouped for everyday commuting duty. A representative part number is DELPHI TA6437.
The Economy section lists 6 options from DORMAN and MEVOTECH — the catalog's value-priced group. DORMAN 543845 is listed in this group.
Buying Steering Parts for a 2018 GMC Acadia
On this vehicle, the steering system connects driver to road through the rack, pump, tie rods, and column components.
- Confirm you have the 3.6L V6 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 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: Tie Rod End and Steering Gear Bolt .
Frequently Asked Questions
How many steering parts fit the 2018 GMC Acadia?
Our catalog currently lists 43 steering parts for the 2018 GMC Acadia across 13 subcategories and 8 brands, covering the 3.6L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of steering problems on a 2018 GMC Acadia?
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 GMC Acadia 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 GMC Acadia?
Every part on this page is matched to the 3.6L V6 engine. 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 GMC Acadia
Steering Parts for Other GMC Acadia Years
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