Delphi TC5578 Suspension Ball Joint - Front Right Lower

Brand Delphi TC5578
Position Front Right Lower
Adjustable No
Ball Joint Assembly Yes
Bushings Included No
Castle Nut Included Yes
Color Black
Cotter Pin Hole Yes
Cotter Pin Included Yes
Distance Between Mounting Holes 55.1
Dust Boot Included Yes
Dust Boot Material Choloroprene Rubber (CR)
Grease Fitting Included No
Greaseable No
Height 6.5
Height 165.0
Item Grade Standard Replacement
Length 240
Material Steel
Mounting Bolt Length 0.67
Mounting Bolt Length 17.0
Mounting Bolt Shank Diameter 0.39
Mounting Bolt Shank Diameter 10.0
Mounting Bolt Thread Length 0.24
Mounting Bolt Thread Length 6.0
Mounting Bolt Thread Pitch 1.25
Mounting Bolts Included Yes
Mounting Hardware Included Yes
Mounting Hole Quantity 4
Mounting Type Bolt In
Nuts Included No
Stud Thread Diameter 0.63
Stud Thread Diameter 16.0
Stud Thread Length 0.94
Stud Thread Length 24.0
Stud Thread Pitch 1.5
Suspension Grade Type Standard
Tapered Stud Yes
Type Threaded
Washers Included No
Width 85.1
Fits Toyota · 10 vehicles

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

Steel construction. Built with a dust boot and threaded design for dependable service.

Bolt-in design. Includes mounting hardware, cotter pin, and castle nut for installation.

Cross-references Beck/Arnley 101-4814, Dorman - OE Solutions 531-123 and Dorman - Premium BJ74464XL for the same application. See all 7.

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OE-Style Front Lower Ball Joint

Delphi TC5578 is a threaded suspension ball joint for the front right lower position on select Toyota Tacoma applications. Built with OE-focused dimensional and material analysis, it is made to match the original fit and steering geometry expected in a front suspension repair.

For Toyota Tacoma front suspension service, TC5578 provides a direct replacement option with a steel body, dust boot, and included mounting hardware details matched to the application.

Key Features

  • Part number: TC5578
  • Front right lower position
  • Threaded ball joint assembly
  • Steel construction with black finish
  • Tapered stud design
  • Dust boot included
  • Castle nut and cotter pin included
  • Bolt-in mounting type with 4 mounting holes
  • Standard replacement suspension grade
  • Grease fitting not included; non-greaseable design

Detailed Description

Delphi TC5578 is engineered as a standard replacement suspension ball joint for the front right lower location on 2001-2004 Toyota Tacoma and 2001 Toyota Tacoma built from 02/2001. It also fits 1995-2000 Toyota Tacoma front left lower applications. Delphi applies OE-level dimensional and material analysis to help ensure proper compatibility between the replacement part and the original suspension design. The part is tested for extreme temperature exposure and salt spray resistance to support durability in demanding road conditions. This part cross-references MOOG Chassis Products K90259 for the same application.

Vehicle Fitment

  • Fits 2001-2004 Toyota Tacoma, front right lower.
  • Fits 2001 Toyota Tacoma, front right lower, from 02/2001.
  • Fits 1995-2000 Toyota Tacoma, front left lower.

Common Repair Symptoms

  • Front-end clunking or popping over bumps
  • Excessive play in the lower suspension joint
  • Uneven tire wear linked to worn steering and suspension components
  • Loose or imprecise front suspension response
  • Inspection failure from worn ball joint movement or boot damage

Installation Notes and Tips

Verify the position before installation, since this part is listed for front right lower and front left lower Tacoma applications depending on year. Confirm stud thread size, mounting hole spacing, and bolt-in configuration against the original component before assembly. Replace any worn adjacent suspension parts during service and perform a professional alignment after installation.

Quality Assurance

Delphi uses OE safety technology and aftermarket steering expertise backed by extreme environmental testing, including sub-zero and high-temperature exposure plus extended salt spray testing. That validation supports consistent fit and corrosion resistance for Tacoma suspension repair work.

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
2004ToyotaTacoma—Front Right Lower—
2003ToyotaTacoma—Front Right Lower—
2002ToyotaTacoma—Front Right Lower—
2001ToyotaTacoma—Front Right LowerFrom 02/2001
2000ToyotaTacoma—Front Left Lower—
1999ToyotaTacoma—Front Left Lower—
1998ToyotaTacoma—Front Left Lower—
1997ToyotaTacoma4WDFront Left Lower—
1996ToyotaTacoma4WDFront Left Lower—
1995ToyotaTacoma4WDFront Left Lower—
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Beck/Arnley — 101-4814Dorman - OE Solutions — 531-123Dorman - Premium — BJ74464XLMAS Industries — B90259MOOG Chassis Products — K9025943330-3936743330-39556