Dorman 527-177 rear left upper lateral arm for the 2013-2016 Buick LaCrosse and other vehicles helps hold the rear wheel's side-to-side position as the suspension moves. It is a direct replacement for a worn or damaged arm in the rear suspension.
- Dorman OE Solutions product line
- Stamped steel construction that resists corrosion
- Bushings included, which saves installation time and labor
- Precision-engineered and rigorously tested for reliable performance
- Standard replacement grade with a bolt-on attachment
Quick facts
- Part: Dorman 527-177 lateral arm
- Fits: 2013-2016 Buick LaCrosse and other vehicles
- Position: Rear left upper rearward
- Material: Steel
- Condition: New
A clunk from the rear suspension or uneven rear tire wear can mean a worn lateral arm. Find the cause before replacing it, since other rear suspension parts can give similar signs; a shop can inspect the arm and its bushings for bends, cracks and torn rubber. This listing is one arm for the rear left; the rear right is a separate part, and both sides are normally replaced together.
Fits
This arm fits the 2013-2016 Buick LaCrosse and the 2013-2019 Cadillac XTS.
Specifications
Fit and size
- Position: rear left upper rearward
- Quantity per vehicle: 1 for this position
- Length: 395.5 mm
- Height: 72.5 mm
- Mounting hole diameter: 14.2 mm, 2 mounting holes
Build and materials
- Type: stamped control arm, standard replacement grade
- Material: steel
- Bushing material: rubber and steel
- Attachment: bolt-on, with bushings at both ends
- Condition: new
- Country of origin: China
In the box
One lateral arm with its bushings; the rear left upper rearward position takes one. Mounting hardware, a ball joint and a grease fitting are not included, so plan on new bolts because the old ones may not be reusable.
Interchange: CA9031 · 20921466 · 23216530 · CMS501252 · 4CB50615
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
CA9031, 20921466, 23216530, CMS501252, 4CB50615
Frequently Asked Questions
Does the Dorman 527-177 lateral arm fit a 2013-2016 Buick LaCrosse?
Yes. Dorman 527-177 is the rear left upper lateral arm for the 2013-2016 Buick LaCrosse, and it also fits the 2013-2019 Cadillac XTS.
Are bushings included with this rear left lateral arm?
Yes, the bushings come with the arm. A ball joint, mounting hardware and a grease fitting are not included.
What is the Dorman 527-177 lateral arm made of?
Dorman 527-177 is a stamped steel arm with rubber and steel bushings. It measures 395.5 mm long and 72.5 mm high.
What are the signs of a worn rear left upper lateral arm?
A clunk from the rear suspension, uneven rear tire wear, or cracks, bends and torn bushing rubber found in an inspection can point to a worn arm. A shop can inspect it and test anything further.
Is Dorman 527-177 the same as number 23216530?
Yes, 23216530 is one of the numbers this Dorman 527-177 arm replaces.
