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Delphi TC4420 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
| Brand | Delphi TC4420 |
|---|---|
| Position | Front Left Lower |
| Fits | Audi, Porsche, and Volkswagen · 17 vehicles |
OE-focused design. Built for suspension service with Delphi engineering applied to aftermarket steering parts.
Extreme-condition tested. Exposed to subzero heat, high heat, and 720 hours of salt spray.
Compatibility analyzed. Dimensional and material checks support OE and aftermarket part matching.
Cross-references Mevotech Supreme CMS70124, Suspensia X01CJ7255 and 7P0 407 151 C for the same application. See all 11.
OE-Style Suspension Control Arm
Delphi TC4420 is a suspension control arm and ball joint assembly built for the front left lower position. It is engineered for direct replacement use on select Volkswagen Touareg, Audi Q7, and Porsche Cayenne applications with the specified fitment.
Key Features
- OE-focused design for suspension service and replacement.
- Front left lower position for the listed applications.
- Built using dimensional and material analysis for OE and aftermarket compatibility.
- Tested across extreme temperature ranges and salt-spray exposure.
- Delphi part number TC4420 for catalog and fitment lookup.
Detailed Description
Delphi TC4420 combines the control arm and ball joint into one service part for the front left lower suspension location. Delphi applies OE engineering experience to its aftermarket steering and suspension portfolio, with testing that includes temperatures below -40 degrees C, above 120 degrees C, and 720 hours of salt spray. That focus on materials, dimensions, and durability supports consistent fit and function on compatible Volkswagen Touareg, Audi Q7, and Porsche Cayenne vehicles. If you are replacing a worn suspension control arm on these platforms, TC4420 provides a direct-match service part identified by Delphi part number TC4420.
What It Is Used For
- Replacing a worn or damaged suspension control arm and ball joint assembly.
- Restoring proper suspension geometry at the front left lower location.
- Addressing looseness, clunking, or uneven tire wear linked to suspension wear.
- Correcting steering response affected by play in the control arm assembly.
Installation Notes and Tips
Verify the vehicle's suspension configuration and match the front left lower position before installation. Compare the removed part to Delphi TC4420 and confirm all mounting points, dimensions, and orientation against the original component. Professional alignment is recommended after suspension component replacement.
Quality Assurance
Delphi applies OE expertise to its aftermarket steering portfolio and validates parts through extreme-temperature and corrosion testing. The TC4420 is supported by Delphi's dimensional and material analysis process for OE and aftermarket compatibility.
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2017 | Volkswagen | Touareg | Wolfsburg Edition | Front Left Lower | — |
| 2016 | Volkswagen | Touareg | — | Front Left Lower | — |
| 2015 | Audi | Q7 | — | Front Left Lower | — |
| 2015 | Porsche | Cayenne | Turbo | Front Left Lower | — |
| 2015 | Volkswagen | Touareg | — | Front Left Lower | — |
| 2014 | Audi | Q7 | — | Front Left Lower | — |
| 2014 | Porsche | Cayenne | Turbo | Front Left Lower | — |
| 2014 | Volkswagen | Touareg | — | Front Left Lower | — |
| 2013 | Audi | Q7 | — | Front Left Lower | — |
| 2013 | Porsche | Cayenne | Turbo | Front Left Lower | — |
| 2013 | Volkswagen | Touareg | — | Front Left Lower | — |
| 2012 | Audi | Q7 | — | Front Left Lower | — |
| 2012 | Porsche | Cayenne | Turbo | Front Left Lower | — |
| 2012 | Volkswagen | Touareg | — | Front Left Lower | — |
| 2011 | Audi | Q7 | — | Front Left Lower | — |
| 2011 | Porsche | Cayenne | Turbo | Front Left Lower | — |
| 2011 | Volkswagen | Touareg | — | Front Left Lower | — |
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