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Delphi TC637 Suspension Ball Joint - Front Left Lower
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.
| Brand | Delphi |
| Part Number | TC637 |
| Adjustable | No |
| Ball Joint Assembly | Yes |
| Bushings Included | No |
| Castle Nut Included | Yes |
| Color | Gray |
| Cotter Pin Hole | Yes |
| Cotter Pin Included | Yes |
| Distance Between Mounting Holes | 35.0 |
| Dust Boot Included | Yes |
| Dust Boot Material | Choloroprene Rubber (CR) |
| Grease Fitting Included | No |
| Greaseable | No |
| Height | 3.831 |
| Height | 97.3 |
| Item Grade | Standard Replacement |
| Length | 121 |
| Material | Steel |
| Maximum Outside Diameter | 1.732 |
| Maximum Outside Diameter | 44.0 |
| Mount Plate Included | No |
| Mounting Bolt Head Diameter | 0.748 |
| Mounting Bolt Head Diameter | 19.0 |
| Mounting Bolt Length | 1.181 |
| Mounting Bolt Length | 30.0 |
| Mounting Bolt Shank Diameter | 0.472 |
| Mounting Bolt Shank Diameter | 12.0 |
| Mounting Bolt Thread Diameter | 12.0 |
| Mounting Bolt Thread Length | 0.787 |
| Mounting Bolt Thread Length | 20.0 |
| Mounting Bolt Thread Pitch | 1.25 |
| Mounting Bolts Included | Yes |
| Mounting Hardware Included | Yes |
| Mounting Hole Quantity | 3 |
| Mounting Type | Bolt On |
| Nuts Included | Yes |
| Position(s) | Front Left Lower |
| Stud Tapered End 1 Diameter | 0.61 |
| Stud Tapered End 1 Diameter | 15.5 |
| Stud Tapered End 2 Diameter | 0.717 |
| Stud Tapered End 2 Diameter | 18.2 |
| Stud Thread Diameter | 0.551 |
| Stud Thread Diameter | 14.0 |
| Stud Thread Length | 0.787 |
| Stud Thread Length | 20.0 |
| Stud Thread Pitch | 1.5 |
| Stud Type | Threaded |
| Suspension Grade Type | Standard |
| Tapered Stud | Yes |
| Washers Included | No |
| Width | 70.0 |
| Wrench Size | 0.748 |
| Wrench Size | 19.0 |
This part fits 10 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1993 | Toyota | Corolla | AWD | Front Left Lower | |
| 1992 | Geo | Prizm | Front Left Lower | ||
| 1992 | Toyota | Corolla | Front Left Lower | ||
| 1991 | Geo | Prizm | Front Left Lower | ||
| 1991 | Toyota | Corolla | Front Left Lower | ||
| 1990 | Geo | Prizm | Front Left Lower | ||
| 1990 | Toyota | Corolla | Front Left Lower | ||
| 1989 | Geo | Prizm | Front Left Lower | ||
| 1989 | Toyota | Corolla | Front Left Lower | ||
| 1988 | Toyota | Corolla | Front 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.