HomeSuspension > Suspension, Springs and Related ComponentsDelphi TC637 Suspension Ball Joint - Front Left Lower
Part #: TC637

Delphi TC637 Suspension Ball Joint - Front Left Lower

Front Left Lower
⚙️ 10 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Toyota and Geo, Corolla and Prizm
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Delphi Suspension Ball Joint for Geo Corolla and Toyota Prizm

The Delphi TC637 suspension ball joint is engineered to provide reliable steering and suspension performance for Geo Corolla and Toyota Prizm models. Constructed from durable steel with a gray finish, this standard suspension grade ball joint assembly is designed to meet OEM specifications and ensure a secure fit.

  • Made from high-strength steel for durability
  • Includes castle nut, cotter pin, and mounting hardware for complete installation
  • Dust boot included to protect the joint from contaminants
  • Standard suspension grade type suitable for daily driving conditions
  • Compatible with Geo Corolla and Toyota Prizm vehicles

Durable Construction and Precise Dimensions

The Delphi TC637 suspension ball joint features a maximum outside diameter of 1.732 inches (44.0 mm) and a length of 121 mm (4.76 inches), providing a precise fit for the specified vehicle models. The stud thread diameter measures 0.551 inches (14.0 mm) with a thread length of 0.787 inches (20.0 mm), ensuring secure attachment. The assembly includes a dust boot to prevent dirt and moisture ingress, extending the service life of the ball joint. The gray steel finish offers corrosion resistance suitable for standard suspension applications.

Compatible Applications and Common Uses

This suspension ball joint is specifically compatible with Geo Corolla and Toyota Prizm models, making it a reliable replacement part for maintaining proper suspension geometry and steering control.

  • Eliminates excessive play in steering linkage
  • Reduces uneven tire wear caused by worn ball joints
  • Restores proper suspension alignment and handling
  • Prevents clunking noises from front suspension
  • Improves overall vehicle stability and safety

Installation Notes and Tips

Installation of the Delphi TC637 ball joint requires basic suspension tools and mechanical knowledge. The package includes a castle nut, cotter pin, and mounting hardware to facilitate secure installation. Note that grease fitting is not included, and the ball joint is not greaseable, so periodic inspection is recommended. Ensure the dust boot is properly seated to maintain protection against contaminants. Torque specifications should follow manufacturer guidelines for Geo Corolla and Toyota Prizm models.

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet industry standards for quality and durability. The TC637 ball joint assembly undergoes rigorous testing to ensure reliable performance under normal driving conditions. While specific warranty details are not provided, Delphi products typically come with a limited warranty covering defects in materials and workmanship.

BrandDelphi
Part NumberTC637
AdjustableNo
Ball Joint AssemblyYes
Bushings IncludedNo
Castle Nut IncludedYes
ColorGray
Cotter Pin HoleYes
Cotter Pin IncludedYes
Distance Between Mounting Holes35.0
Dust Boot IncludedYes
Dust Boot MaterialCholoroprene Rubber (CR)
Grease Fitting IncludedNo
GreaseableNo
Height3.831
Height97.3
Item GradeStandard Replacement
Length121
MaterialSteel
Maximum Outside Diameter1.732
Maximum Outside Diameter44.0
Mount Plate IncludedNo
Mounting Bolt Head Diameter0.748
Mounting Bolt Head Diameter19.0
Mounting Bolt Length1.181
Mounting Bolt Length30.0
Mounting Bolt Shank Diameter0.472
Mounting Bolt Shank Diameter12.0
Mounting Bolt Thread Diameter12.0
Mounting Bolt Thread Length0.787
Mounting Bolt Thread Length20.0
Mounting Bolt Thread Pitch1.25
Mounting Bolts IncludedYes
Mounting Hardware IncludedYes
Mounting Hole Quantity3
Mounting TypeBolt On
Nuts IncludedYes
Position(s)Front Left Lower
Stud Tapered End 1 Diameter0.61
Stud Tapered End 1 Diameter15.5
Stud Tapered End 2 Diameter0.717
Stud Tapered End 2 Diameter18.2
Stud Thread Diameter0.551
Stud Thread Diameter14.0
Stud Thread Length0.787
Stud Thread Length20.0
Stud Thread Pitch1.5
Stud TypeThreaded
Suspension Grade TypeStandard
Tapered StudYes
Washers IncludedNo
Width70.0
Wrench Size0.748
Wrench Size19.0

This part fits 10 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
1993ToyotaCorollaAWDFront Left Lower
1992GeoPrizmFront Left Lower
1992ToyotaCorollaFront Left Lower
1991GeoPrizmFront Left Lower
1991ToyotaCorollaFront Left Lower
1990GeoPrizmFront Left Lower
1990ToyotaCorollaFront Left Lower
1989GeoPrizmFront Left Lower
1989ToyotaCorollaFront Left Lower
1988ToyotaCorollaFront 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:

101-413643340-19015B9525BJ07016K9525MK9525MS8070

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