This page lists 49 steering parts for the 2019 Buick Lacrosse, across 14 part types, covering both the 2.5L L4 and the 3.6L V6. Every part shows its brand, manufacturer part number and fitment notes.
The steering system on the 2019 Buick Lacrosse connects driver to road through the rack, pump, tie rods, and column components. The largest groups are Tie Rod End (26 parts), Knuckle (6 parts) and Coupling Boot (2 parts). The other 11 part types cover the remaining 15 parts.
The 2019 Buick Lacrosse was sold with both the 2.5L L4 and the 3.6L V6. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2019 Buick Lacrosse steering parts are GM GENUINE (24 parts), MEVOTECH (9 parts) and MOOG (3 parts), plus 8 more brands. Quality grades include Daily Driver, Economy and Premium.
8 parts on this 2019 Buick Lacrosse page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including GM GENUINE 23384197 (Knuckle) and GM GENUINE 23449526 (Tie Rod End). Click any part number to see every vehicle that part fits.
Coupling Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23504888 | 🇺🇸 US 🇨🇦 CA | Inner | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84389436 | 🇺🇸 US 🇨🇦 CA | IntermediateOrder with 84389437 | 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.
2 Coupling Boot parts for the 2019 Buick Lacrosse come from GM GENUINE.
Listed part numbers: GM GENUINE 23504888 and GM GENUINE 84389436.
Knuckle
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 23384197 | 🇺🇸 US 🇨🇦 CA | Front LeftFront Strut (GNA) | View on Amazon |
| GM GENUINE Popular Fits: 3.6L V6 | 23384198 | 🇺🇸 US 🇨🇦 CA | Front RightFront Strut (GNA) | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 42803050 | 🇺🇸 US 🇨🇦 CA | Rear LeftRear Axle Chassis Equipment (GNQ) | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 42803051 | 🇺🇸 US 🇨🇦 CA | Rear RightRear Axle Chassis Equipment (GNQ) | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Fits: 3.6L V6 | SK697322 | 🇺🇸 US 🇨🇦 CA | Front Leftwithout Performance Package | View on Amazon |
| SKP Fits: 3.6L V6 | SK697323 | 🇺🇸 US 🇨🇦 CA | Front Rightwithout Performance Package | View on Amazon |
This table covers the steering knuckles that carry the hub, caliper and ball joints.
6 Knuckle parts for the 2019 Buick Lacrosse come from 2 brands — GM GENUINE and SKP. The "Popular" part is GM GENUINE 23384197.
In the Daily Driver grade, GM GENUINE supplies 4 parts: grouped for everyday commuting duty. A representative part number is GM GENUINE 23384197.
The Economy section lists 2 options from SKP — the catalog's value-priced group. SKP SK697322 is listed in this group.
Listed part numbers: GM GENUINE 23384197, GM GENUINE 23384198 and GM GENUINE 42803050, plus the other parts above.
Power Steering Assist Motor / Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 84425940 | 🇺🇸 US 🇨🇦 CA | Includes Power Steering ModuleFront Strut (GNA) | 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.
This group shows a single part: GM GENUINE 84425940.
Rack and Pinion Bellow
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23449527 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the rubber boots that seal the inner tie-rod joints on the rack.
One part is listed for the 2019 Buick Lacrosse — GM GENUINE 23449527.
Rack and Pinion Bellow Clamp
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 25901575 | 🇺🇸 US 🇨🇦 CA | Fits OuterSpringband | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 11547783 | 🇺🇸 US 🇨🇦 CA | InnerHose, Crimp, 68 Open Outside Diameter, 9.5 Wide | View on Amazon |
This table covers the Rack and Pinion Bellow clamps.
2 Rack and Pinion Bellow Clamp parts for the 2019 Buick Lacrosse come from GM GENUINE.
Listed part numbers: GM GENUINE 25901575 and GM GENUINE 11547783.
Steering Column
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 85529026 | 🇺🇸 US 🇨🇦 CA | Supplemental Restraint System Compliant: YES | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 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.
2 Steering Column parts for the 2019 Buick Lacrosse come from GM GENUINE.
Listed part numbers: GM GENUINE 85529026 and GM GENUINE 85561701.
Steering Column Control Module
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 84625122 | 🇺🇸 US 🇨🇦 CA | Power Retractable Tilt Steering Column (N38)Exc. Electric Steering Column Lock Control (N06) | View on Amazon |
This table covers the Steering Column control modules.
One part is listed for the 2019 Buick Lacrosse — GM GENUINE 84625122.
Steering Column Switch Housing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 39088759 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Steering Column Switch housings.
One part is listed for the 2019 Buick Lacrosse — GM GENUINE 39088759.
Steering Coupler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23449521 | 🇺🇸 US 🇨🇦 CA | Single UseChassis Equipment Front Strut Assembly, Chassis Equipment Front Strut Assembly, Performance | View on Amazon |
This table covers the couplers in the steering shaft.
This group shows a single part: GM GENUINE 23449521.
Steering Gear Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 11610468 | 🇺🇸 US 🇨🇦 CA | FrontM12 X 1.75 X 60 mm | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 11610913 | 🇺🇸 US 🇨🇦 CA | M12X1.75X95 | View on Amazon |
This table covers the Steering Gear bolts.
2 Steering Gear Bolt parts for the 2019 Buick Lacrosse come from GM GENUINE.
This group includes GM GENUINE 11610468 and GM GENUINE 11610913.
Steering Gear Heat Shield
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 23307925 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Steering Gear Heat shields. Typical signs include a bent shield rubbing a rotor, or rust-through that leaves the backing open. A rubbing shield will eat a new rotor. Straighten or replace it before the wheel goes back on.
This group shows a single part: GM GENUINE 23307925.
Steering Shaft
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 42810610 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 84389437 | 🇺🇸 US 🇨🇦 CA | IntermediateOrder with 84389436 | View on Amazon |
This table covers the Steering shafts.
2 Steering Shaft parts for the 2019 Buick Lacrosse come from GM GENUINE.
Part numbers include GM GENUINE 42810610 and GM GENUINE 84389437.
Tie Rod End
Daily Driver
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Popular Fits: 3.6L V6 | 23449526 | 🇺🇸 US 🇨🇦 CA | InnerFront Strut (GNA) | View on Amazon |
| MEVOTECH Popular Fits: 3.6L V6 | MS50775 | 🇺🇸 US 🇨🇦 CA | SupremeIncludes Hardware | View on Amazon |
| MOOG Popular Fits: 3.6L V6 | EV801304 | 🇺🇸 US 🇨🇦 CA | Front Innerwithout Performance Package | View on Amazon |
| MOOG Popular Fits: 3.6L V6 | ES801316 | 🇺🇸 US 🇨🇦 CA | Front Left Outerwithout Performance Package | View on Amazon |
| MOOG Popular Fits: 3.6L V6 | ES801317 | 🇺🇸 US 🇨🇦 CA | Front Right Outerwithout Performance Package | View on Amazon |
| DELPHI Fits: 3.6L V6 | TA3331 | 🇺🇸 US 🇨🇦 CA | Inner | View on Amazon |
| DELPHI Fits: 3.6L V6 | TA3332 | 🇺🇸 US 🇨🇦 CA | Left Outer | View on Amazon |
| DELPHI Fits: 3.6L V6 | TA3333 | 🇺🇸 US 🇨🇦 CA | Right Outer | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 23449523 | 🇺🇸 US 🇨🇦 CA | Right OuterFront Strut (GNA) | View on Amazon |
| GM GENUINE Fits: 3.6L V6 | 23449522 | 🇺🇸 US 🇨🇦 CA | Left OuterFront Strut (GNA) | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | MS506102 | 🇺🇸 US 🇨🇦 CA | SupremeGreaseable | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | MS506103 | 🇺🇸 US 🇨🇦 CA | SupremeGreaseable | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | MS50785 | 🇺🇸 US 🇨🇦 CA | Supreme | View on Amazon |
| SUSPENSIA Fits: 3.6L V6 | X07TR0063 | 🇺🇸 US 🇨🇦 CA | Front Innerwith High Performance Suspension Strut | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER Popular Fits: 3.6L V6 | ES801316 | 🇺🇸 US 🇨🇦 CA | Front LeftOuter | View on Amazon |
| DORMAN Fits: 3.6L V6 | 543837 | 🇺🇸 US 🇨🇦 CA | Front Inner | View on Amazon |
| DORMAN Fits: 3.6L V6 | 544779 | 🇺🇸 US 🇨🇦 CA | Front Left Outer | View on Amazon |
| DORMAN Fits: 3.6L V6 | 544780 | 🇺🇸 US 🇨🇦 CA | Front Right Outer | View on Amazon |
| FVP Fits: 3.6L V6 | TI92090 | 🇺🇸 US 🇨🇦 CA | Front Inner | View on Amazon |
| MCQUAY-NORRIS Fits: 3.6L V6 | ES5047 | 🇺🇸 US 🇨🇦 CA | Left Outerwithout Performance Package | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | GS50775 | 🇺🇸 US 🇨🇦 CA | Original Grade | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | GS506102 | 🇺🇸 US 🇨🇦 CA | Original Grade | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | GS506103 | 🇺🇸 US 🇨🇦 CA | Original Grade | View on Amazon |
| QUICK STEER Fits: 3.6L V6 | EV801304 | 🇺🇸 US 🇨🇦 CA | Front Innerwithout Performance Package | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MEVOTECH Fits: 3.6L V6 | TXMS506102 | 🇺🇸 US 🇨🇦 CA | TTX | View on Amazon |
| MEVOTECH Fits: 3.6L V6 | TXMS506103 | 🇺🇸 US 🇨🇦 CA | TTX | 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.
26 Tie Rod End parts are listed for the 2019 Buick Lacrosse, from MEVOTECH, GM GENUINE, MOOG and 7 other brands. GM GENUINE 23449526 carries the "Popular" badge. Daily Driver, Economy and Premium are all represented, and Daily Driver alone accounts for 14 parts.
Tie Rod Nut
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GM GENUINE Fits: 3.6L V6 | 11548246 | 🇺🇸 US 🇨🇦 CA | Inner | View on Amazon |
This table covers the Tie Rod nuts.
One part is listed for the 2019 Buick Lacrosse — GM GENUINE 11548246.
Buying Steering Parts for a 2019 Buick Lacrosse
On this vehicle, the steering system connects driver to road through the rack, pump, tie rods, and column components.
- Match the engine first. Every steering part here is 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: Tie Rod End and Knuckle .
Frequently Asked Questions
How many steering parts fit the 2019 Buick Lacrosse?
Our catalog currently lists 49 steering parts for the 2019 Buick Lacrosse across 14 subcategories and 11 brands, covering both the 2.5L L4 and the 3.6L V6. Each part is matched to the engine(s) it fits.
Do steering parts differ between 2019 Buick Lacrosse engines?
Yes. Every steering part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 2019 Buick Lacrosse?
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 2019 Buick Lacrosse 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 2019 Buick Lacrosse?
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 2019 Buick Lacrosse
Steering Parts for Other Buick Lacrosse Years
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