HomeSuspension > Suspension, Springs and Related ComponentsDelphi TC537 Suspension Ball Joint - Rear Left Lower
Part #: TC537

Delphi TC537 Suspension Ball Joint - Rear Left Lower

Rear Left Lower
⚙️ 6 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi, 90 Quattro and Coupe Quattro
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Delphi Suspension Ball Joint for Audi 90 Quattro and Coupe Quattro

The Delphi TC537 suspension ball joint is engineered to provide reliable steering and suspension performance for Audi 90 Quattro and Coupe Quattro models. Constructed from durable steel with a gray finish, this standard-grade ball joint assembly includes essential mounting hardware for a secure bolt-on installation.

  • Material: High-strength steel construction
  • Maximum outside diameter: 1.693 inches (43.0 mm)
  • Includes dust boot made of chloroprene rubber for protection
  • Mounting hardware included: bolts, nuts, and washers
  • Adjustable design with two mounting holes spaced 48.0 mm apart
  • Standard suspension grade type suitable for OEM replacement
  • Mounting bolt length: 2.028 inches (51.5 mm) with 0.394 inch (10.0 mm) shank diameter
  • Wrench size required: 17 mm (0.669 inches)

Durable Design and Construction

The Delphi TC537 suspension ball joint is manufactured from steel to ensure strength and longevity under typical driving conditions. The gray finish helps resist corrosion, while the included chloroprene rubber dust boot protects the joint from dirt and moisture, extending service life. This ball joint assembly is designed as a bolt-on replacement with all necessary mounting hardware included, simplifying installation. Its adjustable feature allows for precise alignment, maintaining proper suspension geometry on Audi 90 Quattro and Coupe Quattro vehicles.

Compatible Applications and Use Cases

This suspension ball joint is specifically compatible with Audi 90 Quattro and Coupe Quattro models, making it a direct replacement part for these vehicles. It is intended for use in the suspension system to connect control arms to steering knuckles, enabling smooth pivoting and steering control.

  • Restores proper steering response and suspension articulation
  • Eliminates excessive play or looseness in suspension components
  • Prevents uneven tire wear caused by worn ball joints
  • Reduces noise and vibration from faulty suspension joints
  • Maintains vehicle stability and handling performance

Installation Notes and Tips

Installation of the Delphi TC537 ball joint requires basic mechanical skills and standard hand tools. The included mounting hardware (bolts, nuts, washers) ensures a secure fit. Use a 17 mm wrench to tighten mounting bolts to manufacturer torque specifications. The dust boot should be inspected during installation to confirm it is properly seated to prevent contamination. Since this ball joint is adjustable, verify alignment settings after installation to maintain correct suspension geometry.

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The TC537 ball joint undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in the product's reliability.

BrandDelphi
Part NumberTC537
AdjustableYes
Ball Joint AssemblyYes
Bushings IncludedNo
Castle Nut IncludedNo
ColorGray
Cotter Pin HoleNo
Cotter Pin IncludedNo
Distance Between Mounting Holes48.0
Dust Boot IncludedYes
Dust Boot MaterialCholoroprene Rubber (CR)
Grease Fitting IncludedNo
GreaseableNo
Height2.587
Height65.7
Item GradeStandard Replacement
MaterialSteel
Maximum Outside Diameter1.693
Maximum Outside Diameter43.0
Mounting Bolt Head Diameter0.709
Mounting Bolt Head Diameter18.0
Mounting Bolt Length2.028
Mounting Bolt Length51.5
Mounting Bolt Shank Diameter0.394
Mounting Bolt Shank Diameter10.0
Mounting Bolt Thread Diameter10.0
Mounting Bolt Thread Length1.102
Mounting Bolt Thread Length28.0
Mounting Bolt Thread Pitch1.5
Mounting Bolts IncludedYes
Mounting Hardware IncludedYes
Mounting Hole Quantity2
Mounting TypeBolt On
Nuts IncludedYes
Position(s)Rear Left Lower
Suspension Grade TypeStandard
Washers IncludedYes
Width90.6
Wrench Size0.669
Wrench Size17.0

This part fits 6 vehicles. Search below:

YearMakeModelPositionNotes
1991Audi90 QuattroRear Left Lower
1991AudiCoupe QuattroRear Left Lower
1990Audi90 QuattroRear Left Lower
1990AudiCoupe QuattroRear Left Lower
1989Audi90 QuattroRear Left Lower
1988Audi90 QuattroRear Left Lower

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

893 505 365 C

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.