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Q: What OEM parts do these Model S lower arms replace?

They are full OEM-spec replacements for the factory arms. The Fore arms replace Tesla part numbers 1420341-00-C (left) and 1420346-00-C (right). The Lateral Aft arms replace 1027351-00-E for both sides. Because the upgraded spherical bushings and ball joints come already installed, you swap the complete arm instead of pressing new bushings into your old ones, which is where most of the labor cost normally hides.

Tesla Model S

INSTALLATION guide

For the do it yourselfer or trained mechanic, our in-depth installation guides provide step by step detailed instructions on fitting your Tesla with Unplugged Performance Parts.
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Tesla Model S

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