Lexus RX Series AL20 (2015–2022) Polymann Bushing Upgrade — Restoring the Steering Precision a Luxury SUV Demands

The Lexus RX AL20 — produced from 2015 to 2022 and covering the RX 200t, RX 300, RX 350, and RX 450h variants — is built around a promise of refinement. The steering is precise but never harsh. The ride absorbs imperfections without transmitting them to the cabin. The front suspension tracks with a solidity that makes the RX feel smaller and sharper than its dimensions suggest. All of that character flows through the front lower arm bushings. At high mileage, those bushings wear — and when they do, the precision that defines the RX ownership experience begins to erode quietly.

PPPB 35837 — Front Lower Arm Bushing Kit: The RX AL20 uses a MacPherson strut front suspension, with the lower control arm located to the subframe through bushings at both pivot ends. The kit includes the full set of polyurethane bushings plus the associated hardware — cam bolt adjusters and locating brackets — needed for a complete installation. This hardware allows precise geometry adjustment during installation, ensuring the front suspension is set up correctly rather than simply bolted back to factory position. Over time, worn rubber bushings allow the arm to shift subtly under braking and cornering loads, causing steering that wanders slightly at centre and a faint knock over sharp road edges. PPPB 35837 replaces the rubber with polyurethane that holds its shape under load while retaining the compliance that makes the RX comfortable.

The most noticeable improvement after PPPB 35837 installation is steering centre feel. On a worn RX, the steering has a small dead zone at centre — a slight hesitation before the wheel translates input into direction change. After new bushings are fitted and the wheel alignment is corrected, that dead zone tightens up significantly. The car tracks straighter on the highway with less correction, and the front end feels more planted in corners. The ride quality is not compromised — polyurethane at the correct durometer for a luxury SUV retains compliance over road imperfections.

Because PPPB 35837 includes cam bolt adjusters as part of the kit, wheel alignment is not just recommended after installation — it is built into the process. The cam bolts allow the technician to dial in the correct camber and toe settings for the RX's front geometry. A full four-wheel alignment after installation ensures the vehicle is set up to manufacturer specification and that the improvement in steering feel and tyre wear is fully realised.

4M Carcare is an authorised Polymann installer in Malaysia. We supply and fit the genuine PPPB 35837 kit for the Lexus RX AL20, and complete every job with a full four-wheel alignment. If your RX 200t, RX 300, RX 350, or RX 450h is showing the signs of bushing wear, contact us to book.