Keep the rear suspension precisely located with the Delphi Lateral Arm TC4991, a direct-fit replacement for a range of Audi models. It installs in the rear right, upper forward position, where the arm links the wheel carrier to the chassis, controls wheel movement, and helps maintain rear wheel alignment geometry. Fits the 2016-2020 Audi A4, 2016-2024 Audi A4 Quattro, 2017-2024 Audi A4 Allroad, 2018-2024 Audi A5 Quattro, 2018-2024 Audi A5 Sportback, 2018-2023 Audi S4 (and 2016 S4), 2018-2023 Audi S5, 2018-2023 Audi S5 Sportback, 2018-2019 and 2021-2023 Audi RS5, and 2019 and 2021-2023 Audi RS5 Sportback — see the Buyer's Guide tab for the full list.
- OE-focused engineering: Delphi applies its OE steering and suspension expertise to the aftermarket, with dimensional and material analysis for close OE compatibility.
- Validated to the extreme: Tested below -40°C and over 120°C, plus 720 hours of salt spray exposure.
- 100% inspected: Each arm undergoes crack detection and ultrasonic flaw detection so materials match OE specifications.
- Corrosion protection: Anti-corrosion protection is applied to each part for corrosion prevention and enhanced aesthetics.
Delphi includes the necessary accessories for a complete job. Signs the original arm may need replacing include clunking from the rear, uneven tire wear, or loose rear-end handling.
Interchange: 8W0 505 324 F · 527-072
CMS701214 · X01LA7438 · 8W0505324F · 527072
This part cross-references / interchanges with the following part numbers:
8W0 505 324 F, 527-072, KSC4264, CMS701214, X01LA7438
