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1990, 1989, 1988, 1987, 1986, 1985, 1984 GMC S15 Suspension Ball Joint
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1984 - 1990 GMC S15 Suspension Ball Joint - Front Upper (Delphi) NEW

$ 57 .21
120-DayReturns
LifetimeWarranty
100%Money-Back

Product Notes Read before buying

Position: Front Upper
⚠️ Most jobs typically require 2 of this item.

Delphi's OE safety technology is fitted to millions of vehicles worldwide and we apply Delphi's OE expertise to our aftermarket steering portfolio. Delphi tests to the extreme for OE performance at every turn: our parts withstand temperatures below -40 degrees C and over 120 degrees C and are exposed to 720 hours of salt spray. Delphi's extensive dimensional and material analysis ensures the very best compatibility between the OE and aftermarket part.
Brand: Delphi
Condition: New
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Specifications & Info


Attribute Value
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 46.00
Dust Boot Included Yes
Dust Boot Material Rubber
Grease Fitting Included Yes
Material Steel
Maximum Outside Diameter 1.917, 48.70
Mount Plate Included No
Mounting Bolt Head Diameter 0.484, 12.30
Mounting Bolt Length 1.161, 29.50
Mounting Bolt Shank Diameter 0.250, 6.35
Mounting Bolt Thread Diameter 0.250, 6.35
Mounting Bolt Thread Length 0.906, 23.00
Mounting Bolt Threads Per Inch 28
Mounting Bolts Included Yes
Mounting Hardware Included Yes
Mounting Hole Quantity 4
Mounting Type Bolt-in
Nuts Included Yes
Position(s) Front Upper
Stud Tapered End 1 Diameter 0.539, 13.7
Stud Tapered End 2 Diameter 0.661, 16.8
Stud Thread Diameter 0.5, 12.7
Stud Thread Length 0.74, 18.8
Stud Threads Per Inch 20
Stud Type Threaded
Suspension Grade Type Standard Replacement
Tapered Stud Yes
Washers Included No
Wrench Size 11mm

Vehicle Fitment Guide

This part fits the following vehicles:

GMC 1 model (tapclick to expand)(tapclick to hide)
S15 1984-1990 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Cab & Chassis 1988 V6 4.3L RWD/4WD Automatic & Manual
Base Cab & Chassis 1985 - 1988 L4 2.5L RWD/4WD Automatic & Manual
Base Cab & Chassis 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
Base Cab & Chassis 1984 L4 2.0L RWD/4WD Automatic & Manual
Base Cab & Chassis 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
Base Cab & Chassis 1984 - 1988 V6 2.8L RWD/4WD Automatic & Manual
Base Extended Cab Pickup 1988 - 1990 V6 4.3L RWD/4WD Automatic & Manual
Base Extended Cab Pickup 1985 - 1990 L4 2.5L RWD/4WD Automatic & Manual
Base Extended Cab Pickup 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
Base Extended Cab Pickup 1984 L4 2.0L RWD/4WD Automatic & Manual
Base Extended Cab Pickup 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
Base Extended Cab Pickup 1984 - 1990 V6 2.8L RWD/4WD Automatic & Manual
Base Standard Cab Pickup 1988 - 1990 V6 4.3L RWD/4WD Automatic & Manual
Base Standard Cab Pickup 1985 - 1990 L4 2.5L RWD/4WD Automatic & Manual
Base Standard Cab Pickup 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
Base Standard Cab Pickup 1984 L4 2.0L RWD/4WD Automatic & Manual
Base Standard Cab Pickup 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
Base Standard Cab Pickup 1984 - 1990 V6 2.8L RWD/4WD Automatic & Manual
EL Standard Cab Pickup 1987 L4 2.5L RWD/4WD Automatic & Manual
EL Standard Cab Pickup 1987 V6 2.8L RWD/4WD Automatic & Manual
Gypsy Extended Cab Pickup 1988 V6 4.3L RWD/4WD Automatic & Manual
Gypsy Extended Cab Pickup 1986 - 1988 L4 2.5L RWD/4WD Automatic & Manual
Gypsy Extended Cab Pickup 1986 - 1988 V6 2.8L RWD/4WD Automatic & Manual
Gypsy Standard Cab Pickup 1988 V6 4.3L RWD/4WD Automatic & Manual
Gypsy Standard Cab Pickup 1986 - 1988 L4 2.5L RWD/4WD Automatic & Manual
Gypsy Standard Cab Pickup 1986 - 1988 V6 2.8L RWD/4WD Automatic & Manual
High Sierra Extended Cab Pickup 1988 - 1990 V6 4.3L RWD/4WD Automatic & Manual
High Sierra Extended Cab Pickup 1985 - 1990 L4 2.5L RWD/4WD Automatic & Manual
High Sierra Extended Cab Pickup 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
High Sierra Extended Cab Pickup 1984 L4 2.0L RWD/4WD Automatic & Manual
High Sierra Extended Cab Pickup 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
High Sierra Extended Cab Pickup 1984 - 1990 V6 2.8L RWD/4WD Automatic & Manual
High Sierra Standard Cab Pickup 1988 - 1990 V6 4.3L RWD/4WD Automatic & Manual
High Sierra Standard Cab Pickup 1985 - 1990 L4 2.5L RWD/4WD Automatic & Manual
High Sierra Standard Cab Pickup 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
High Sierra Standard Cab Pickup 1984 L4 2.0L RWD/4WD Automatic & Manual
High Sierra Standard Cab Pickup 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
High Sierra Standard Cab Pickup 1984 - 1990 V6 2.8L RWD/4WD Automatic & Manual
Sierra Classic Extended Cab Pickup 1988 - 1990 V6 4.3L RWD/4WD Automatic & Manual
Sierra Classic Extended Cab Pickup 1985 - 1990 L4 2.5L RWD/4WD Automatic & Manual
Sierra Classic Extended Cab Pickup 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
Sierra Classic Extended Cab Pickup 1984 L4 2.0L RWD/4WD Automatic & Manual
Sierra Classic Extended Cab Pickup 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
Sierra Classic Extended Cab Pickup 1984 - 1990 V6 2.8L RWD/4WD Automatic & Manual
Sierra Classic Standard Cab Pickup 1988 - 1990 V6 4.3L RWD/4WD Automatic & Manual
Sierra Classic Standard Cab Pickup 1985 - 1990 L4 2.5L RWD/4WD Automatic & Manual
Sierra Classic Standard Cab Pickup 1984 - 1985 L4 1.9L RWD/4WD Automatic & Manual
Sierra Classic Standard Cab Pickup 1984 L4 2.0L RWD/4WD Automatic & Manual
Sierra Classic Standard Cab Pickup 1984 - 1985 L4 2.2L DIESEL RWD/4WD Automatic & Manual
Sierra Classic Standard Cab Pickup 1984 - 1990 V6 2.8L RWD/4WD Automatic & Manual
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies, in plain English.

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Lifetime Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.

Returns (120 Days)

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.
Delphi's OE safety technology is fitted to millions of vehicles worldwide and we apply Delphi's OE expertise to our aftermarket steering portfolio. Delphi tests to the extreme for OE performance at every turn: our parts withstand temperatures below -40 degrees C and over 120 degrees C and are exposed to 720 hours of salt spray. Delphi's extensive dimensional and material analysis ensures the very best compatibility between the OE and aftermarket part.

Interchange Parts

Brand Part Number
General Motors 10372887
MAS Industries B5320XL
Mevotech GK5320
Mevotech TXK5320

Fits Years: 1984 1985 1986 1987 1988 1989 1990

Fits Models: S15

Expert Guide

GMC S15 Suspension Ball Joint Replacement Guide (1982-1990)

Fix clunks, wandering steering, and uneven tire wear on your 1982-1990 GMC S15 by choosing the right ball joints.

 Read Full Guide →
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120
Day Return Window

4× the Industry Standard

Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.

NEW
Direct-Fit Replacement

Engineered To OEM Specs

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