Delphi TC1731 Suspension Ball Joint - Front Left or Front Left Lower
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Delphi

Delphi TC1731 Suspension Ball Joint - Front Left or Front Left Lower

Brand Delphi TC1731
Position Front Left Lower
Adjustable No
Ball Joint Assembly Yes
Bushings Included No
Castle Nut Included Yes
Color Gray
Cotter Pin Hole Yes
Cotter Pin Included Yes
Dust Boot Included Yes
Dust Boot Material Choloroprene Rubber (CR)
Grease Fitting Included Yes
Height 4.587
Height 116.5
Item Grade Standard Replacement
Length 54
Material Steel
Maximum Outside Diameter 2.126
Maximum Outside Diameter 54.0
Mount Plate Included No
Mounting Hardware Included Yes
Mounting Hole Quantity 0
Nuts Included Yes
Position(s) Front Left, Front Left Lower. For the position specific to your vehicle, refer to the Application tab.
Stud Tapered End 1 Diameter 0.624
Stud Tapered End 1 Diameter 15.85
Stud Tapered End 2 Diameter 0.752
Stud Tapered End 2 Diameter 19.1
Stud Thread Diameter 0.563
Stud Thread Diameter 14.2
Stud Thread Length 0.772
Stud Thread Length 19.6
Stud Thread Pitch 0.7
Stud Threads Per Inch 18
Stud Type Threaded
Suspension Grade Type Standard
Tapered Stud Yes
Washers Included No
Width 54.0
Fits Audi and Volkswagen · 125 vehicles

Standard replacement. OE expertise and dimensional analysis help ensure compatibility.

Steel construction. Built with a dust boot and grease fitting for dependable service.

Complete assembly. Includes mounting hardware, nuts, cotter pin, and castle nut.

Cross-references Beck/Arnley 101-5973, Dorman - Premium BJ43023PR and Mevotech Supreme MK500016 for the same application. See all 14.

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Free returns within 60 days if it doesn't fit when fitment is verified.
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OE-Style Front Left Lower Ball Joint

Delphi TC1731 is a standard replacement suspension ball joint built for front left lower applications on select Audi and Volkswagen models. It combines OE-based dimensional analysis with material testing to support proper fit, steering response, and suspension articulation.

Key Features

  • Steel construction with a gray finish
  • Dust boot included with chloroprene rubber (CR) material
  • Grease fitting included for serviceability
  • Castle nut, cotter pin, nuts, and mounting hardware included
  • Threaded tapered stud with cotter pin hole
  • Standard suspension grade replacement
  • Delphi part number TC1731

Detailed Description

Delphi TC1731 is engineered as a front left lower suspension ball joint for vehicles including the Audi A3, A3 Quattro, RS3, S3, Q3, and Volkswagen GTI, Golf, Golf R, Jetta, Taos, Tiguan, Arteon, CC, Passat, and Passat CC in the listed applications. Delphi applies OE-focused dimensional and material analysis to help ensure the aftermarket part matches the original design requirements for proper suspension geometry and dependable operation. The ball joint assembly uses a tapered threaded stud, steel body, and protective dust boot to support long-term durability in demanding road conditions. This part cross-references MOOG Chassis Products K500016 for the same application.

What This Part Helps Address

  • Front-end looseness or play at the lower control arm connection
  • Clunking or knocking noises from the front suspension
  • Uneven tire wear related to worn suspension joints
  • Steering wander or reduced directional stability
  • Restoring proper suspension articulation on Audi and Volkswagen front left lower applications

Installation Notes and Tips

Verify the exact position before ordering: this part is listed for front left lower applications, with some fitments noted as front left. Confirm brake package notes where shown, including 16-inch and 17-inch brake applications. Inspect the mating control arm and surrounding hardware for wear before installation, and follow the vehicle service procedure for torque and alignment checks after replacement. Delphi TC1731 is a threaded, tapered-stud design, so correct seating and fastener engagement are important for proper installation.

Quality Assurance

Delphi tests steering and suspension components under extreme temperature and corrosion conditions, including sub-zero and high-heat exposure plus extended salt-spray testing. That OE-focused validation, along with dimensional and material analysis, supports consistent fit and performance for this Delphi TC1731 ball joint.

Related reading

This part fits 125 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2025AudiA3 Quattro——Front Left Lower—
2025AudiRS3——Front Left Lower—
2025AudiS3——Front Left Lower—
2025VolkswagenGolf R——Front Left Lower—
2025VolkswagenGTI——Front Left Lower—
2025VolkswagenJetta2.0LL4Front Left Lower—
2025VolkswagenTaos——Front Left Lower—
2025VolkswagenTiguan——Front Left Lower—
2024AudiA3——Front Left Lower—
2024AudiA3 Quattro——Front Left Lower—
2024AudiQ3——Front Left Lower—
2024AudiRS3——Front Left Lower—
2024AudiS3——Front Left Lower—
2024VolkswagenGolf R——Front Left Lower—
2024VolkswagenGTI——Front Left Lower—
2024VolkswagenJetta——Front Left Lower—
2024VolkswagenTaos——Front Left Lower—
2024VolkswagenTiguan——Front Left Lower—
2023AudiA3——Front Left Lower—
2023AudiA3 Quattro——Front Left Lower—
2023AudiQ3——Front Left Lower—
2023AudiRS3——Front Left Lower—
2023AudiS3——Front Left Lower—
2023VolkswagenArteon——Front Left Lower—
2023VolkswagenGolf R——Front Left Lower—
2023VolkswagenGTI——Front Left Lower—
2023VolkswagenJetta——Front Left Lower—
2023VolkswagenTaos——Front Left Lower—
2023VolkswagenTiguan——Front Left Lower—
2022AudiA3——Front Left Lower—
2022AudiA3 Quattro——Front Left Lower—
2022AudiQ3——Front Left Lower—
2022AudiRS3——Front Left Lower—
2022AudiS3——Front Left Lower—
2022VolkswagenArteon——Front Left Lower—
2022VolkswagenGolf R——Front Left Lower—
2022VolkswagenGTI——Front Left Lower—
2022VolkswagenJetta——Front Left Lower—
2022VolkswagenTaos——Front Left Lower—
2022VolkswagenTiguan——Front Left Lower—
2021AudiQ3——Front Left Lower—
2021VolkswagenArteon——Front Left Lower—
2021VolkswagenGolf——Front Leftwith 16in & 17in Brakes
2021VolkswagenGTI——Front Left Lower—
2021VolkswagenJetta——Front Left Lowerwith 16in & 17in Brakes
2021VolkswagenTiguan——Front Left Lower—
2020AudiA3——Front Left Lowerwith 16in & 17in Brakes
2020AudiA3 Quattro——Front Left Lower—
2020AudiQ3——Front Left Lower—
2020AudiRS3——Front Left Lower—
2020AudiS3——Front Left Lowerwith 16in & 17in Brakes
2020VolkswagenArteon——Front Left Lower—
2020VolkswagenGolf——Front Leftwith 16in & 17in Brakes
2020VolkswagenGTI——Front Left Lower—
2020VolkswagenJetta——Front Left Lowerwith 16in & 17in Brakes
2020VolkswagenTiguan——Front Left Lower—
2019AudiA3——Front Left Lowerwith 16in & 17in Brakes
2019AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2019AudiQ3——Front Left Lower—
2019AudiRS3——Front Left Lowerwith 16in & 17in Brakes
2019AudiS3——Front Left Lowerwith 16in & 17in Brakes
2019VolkswagenArteon——Front Left Lower—
2019VolkswagenGolf——Front Leftwith 16in & 17in Brakes
2019VolkswagenGolf Alltrack——Front Leftwith 16in & 17in Brakes
2019VolkswagenGolf R——Front Leftwith 16in & 17in Brakes
2019VolkswagenGolf SportWagen——Front Leftwith 16in & 17in Brakes
2019VolkswagenGTI——Front Left Lowerwith 16in & 17in Brakes
2019VolkswagenJetta——Front Left Lowerwith 16in & 17in Brakes
2019VolkswagenTiguan——Front Left Lower—
2018AudiA3——Front Left Lowerwith 16in & 17in Brakes
2018AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2018AudiA3 Sportback e-tron——Front Left Lowerwith 16in & 17in Brakes
2018AudiRS3——Front Left Lowerwith 16in & 17in Brakes
2018AudiS3——Front Left Lowerwith 16in & 17in Brakes
2018VolkswagenGolf——Front Leftwith 16in & 17in Brakes
2018VolkswagenGolf Alltrack——Front Leftwith 16in & 17in Brakes
2018VolkswagenGolf R——Front Leftwith 16in & 17in Brakes
2018VolkswagenGolf SportWagen——Front Leftwith 16in & 17in Brakes
2018VolkswagenGTI——Front Left Lowerwith 16in & 17in Brakes
2018VolkswagenTiguan——Front Left Lower—
2017AudiA3——Front Left Lowerwith 16in & 17in Brakes
2017AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2017AudiA3 Sportback e-tron——Front Left Lowerwith 16in & 17in Brakes
2017AudiRS3——Front Left Lower—
2017AudiS3——Front Left Lowerwith 16in & 17in Brakes
2017VolkswagenCC——Front Left Lower—
2017VolkswagenGolf——Front Leftwith 16in & 17in Brakes
2017VolkswagenGolf Alltrack——Front Leftwith 16in & 17in Brakes
2017VolkswagenGolf R——Front Leftwith 16in & 17in Brakes
2017VolkswagenGolf SportWagen——Front Leftwith 16in & 17in Brakes
2017VolkswagenGTI——Front Left Lowerwith 16in & 17in Brakes
2016AudiA3——Front Left Lowerwith 16in & 17in Brakes
2016AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2016AudiA3 Sportback e-tron——Front Left Lowerwith 16in & 17in Brakes
2016AudiS3——Front Left Lowerwith 16in & 17in Brakes
2016VolkswagenCC——Front Left Lower—
2016VolkswagenGolf——Front Leftwith 16in & 17in Brakes
2016VolkswagenGolf R——Front Leftwith 16in & 17in Brakes
2016VolkswagenGolf SportWagen——Front Leftwith 16in & 17in Brakes
2016VolkswagenGTI——Front Left Lowerwith 16in & 17in Brakes
2015AudiA3——Front Left Lowerwith 16in & 17in Brakes
2015AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2015AudiS3——Front Left Lowerwith 16in & 17in Brakes
2015VolkswagenCC——Front Left Lower—
2015VolkswagenGolf R——Front Leftwith 16in & 17in Brakes
2015VolkswagenGolf SportWagen——Front Leftwith 16in & 17in Brakes
2015VolkswagenGTI——Front Left Lower—
2014VolkswagenCC——Front Left Lower—
2013AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2013VolkswagenCC——Front Left Lower—
2012AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2012VolkswagenCC——Front Left Lower—
2011AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2011VolkswagenCC——Front Left Lower—
2010AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes
2010VolkswagenCC——Front Left Lower—
2010VolkswagenPassat——Front Left Lower—
2010VolkswagenPassat CC——Front Left Lower—
2009AudiA3 Quattro——Front Left Lowerwith 16in & 17in Brakes; From 05/25/2009
2009VolkswagenCC——Front Left Lower—
2009VolkswagenPassat——Front Left Lower—
2009VolkswagenPassat CC——Front Left Lower—
2008VolkswagenPassat——Front Left Lower—
2007VolkswagenPassat——Front Left Lower—
2006VolkswagenPassat——Front Left Lower—
Directly replaces or cross-references 14 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Beck/Arnley — 101-5973Dorman - Premium — BJ43023PRMevotech Supreme — MK500016MOOG Chassis Products — K5000163C0 407 365 A3C0 407 365 B505-1371BJ07037BJ14053BJ43023BJ43273FA2302JBJ794VW-F209