KPALAG Rear Suspension Spindle Knuckle Bushing for Chevrolet Malibu & Buick Regal 2016-2020 — Pair, Galvanized Steel & Rubber

KPALAG rear suspension spindle knuckle bushing is a direct-fit replacement that restores rear steering knuckle support and reduces play for Chevrolet Malibu (2016–2020) and Buick Regal Sportback/TourX (2018–2020).

When the rear suspension spindle knuckle bushing wears out, many owners notice loose handling, unusual clunks, or uneven rear tire wear. This KPALAG bushing is engineered to match OE mounting points and restore the steering knuckle’s alignment using durable steel and resilient rubber, with a galvanized finish to resist corrosion and extend service life.

How does this bushing affect vehicle handling and noise?

A compromised knuckle bushing allows excessive movement at the rear spindle, which can translate into vague steering feel, increased body motion, and intermittent knocking sounds over bumps. Replacing the worn bushing tightens the connection between the axle and knuckle, returning more predictable responses during cornering and reducing impact noise.

• Improves rear-end stability and steering feedback.
• Reduces clunks and rubbing noises from the suspension.
• Helps prevent uneven rear tire wear caused by excess play.

Will this part fit my car and which OEM numbers does it replace?

This KPALAG unit is designed for rear suspension use on Chevrolet Malibu model years 2016–2020 and Buick Regal Sportback / TourX 2018–2020. It is offered as a direct-fit replacement for several OEM and aftermarket references, making ordering and installation straightforward.

• Compatible vehicles: Chevrolet Malibu (2016–2020), Buick Regal Sportback/TourX (2018–2020).
• Replaces part numbers: 22949387, 22949386, 4740700, 84454535, 84454536, 540-163.
• Sold as a pair (left and right rear spindle knuckle bushings).

What materials and construction features lengthen service life?

KPALAG combines hardened steel hardware with a formulated rubber sleeve to resist wear, absorb shock, and remain flexible across changing temperatures. The steel surfaces receive a galvanizing treatment to slow corrosion in road salt and wet conditions, extending operational life compared with untreated parts.

• Steel core for structural strength and load transfer.
• Durable rubber compound for impact damping and flexibility.
• Galvanized finish to resist rust and environmental corrosion.

How is this bushing supplied and what should I expect when replacing it?

The product ships as a two-piece set covering both left and right rear spindle knuckle bushings, so you can replace symmetric wear in one service interval. Installation requires basic suspension tools and alignment verification after reassembly; follow vehicle service manual steps or have a trusted shop perform the swap.

• Package contains: 2 x rear suspension spindle knuckle bushings (left and right).
• Expect to check torque specs and wheel alignment after installation.
• Compatible with factory mounting points—no modification required for fitment.

Who is this for: Owners or technicians working on Chevrolet Malibu (2016–2020) and Buick Regal Sportback/TourX (2018–2020) who need a reliable, OEM-replacement rear spindle knuckle bushing. Choose KPALAG if you want a corrosion-resistant steel/rubber assembly that addresses rear suspension play, diminishes noise, and helps preserve tire life when compared to a worn original bushing.