Delphi TC3665 Suspension Ball Joint - Front Lower

Brand Delphi TC3665
Position Front Lower
Adjustable No
Ball Joint Assembly Yes
Bushings Included No
Color Gray
Cotter Pin Hole No
Dust Boot Included Yes
Dust Boot Material Choloroprene Rubber (CR)
Grease Fitting Included No
Greaseable No
Height 4.331
Height 110.0
Item Grade Standard Replacement
Length 64
Material Ball Material - Alloy Steel SAE 5140, Housing Material - Carbon Steel SAE 1040
Mount Plate Included No
Mounting Hardware Included Yes
Mounting Hole Quantity 0
Mounting Type Pressed
Nuts Included No
Stud Tapered End 1 Diameter 0.689
Stud Tapered End 1 Diameter 17.5
Stud Tapered End 2 Diameter 0.846
Stud Tapered End 2 Diameter 21.5
Stud Thread Diameter 16.0
Stud Thread Length 0.878
Stud Thread Length 22.3
Stud Thread Pitch 1.5
Tapered Stud Yes
Washers Included No
Width 64.0
Fits Jeep · 18 vehicles

OE expertise. Delphi applies OE engineering to its aftermarket steering portfolio.

Standard replacement. A pressed ball joint assembly for straightforward service replacement.

Durable materials. Alloy steel and carbon steel construction with a protective dust boot.

Cross-references MOOG Chassis Products K3134T, MOOG Chassis Products K3185 and MOOG Chassis Products K7429 for the same application. See all 6.

$67.12Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.

Delphi TC3665 Front Lower Ball Joint

Delphi TC3665 is a front lower suspension ball joint built for OE-style replacement on select Jeep applications. It combines a pressed-in mounting design with a tapered stud, dust boot, and included mounting hardware to support precise steering and suspension movement.

Key Features

  • Front lower suspension ball joint for Jeep Wrangler, Wrangler JK, and Grand Cherokee applications
  • Pressed mounting type for direct suspension service
  • Tapered stud with 16.0 mm thread diameter and 1.5 pitch
  • Ball material: Alloy Steel SAE 5140; housing material: Carbon Steel SAE 1040
  • Dust boot included; grease fitting not included
  • Standard replacement grade with ball joint assembly included
  • Mounting hardware included

Detailed Description

The Delphi TC3665 front lower ball joint is engineered for OE-level dimensional and material compatibility in the steering and suspension system. Delphi applies its OE expertise to the aftermarket by validating parts through temperature extremes, salt-spray exposure, and dimensional analysis, helping ensure the replacement matches the original application more closely. This part cross-references Mopar 68004085AA for the same application. It is a direct-fit suspension ball joint for 2007-2017 Jeep Wrangler, 2018 Jeep Wrangler JK, and 1999-2004 Jeep Grand Cherokee front lower positions.

What This Part Helps Address

  • Front-end looseness or play in the suspension
  • Clunking or knocking from the lower control arm area
  • Uneven steering response caused by worn ball joint components
  • Excess movement at the front lower suspension pivot point
  • Restoration of proper alignment stability after wear-related service

Installation Notes and Tips

Fits 2007-2017 Jeep Wrangler, front lower. Fits 2018 Jeep Wrangler JK, front lower. Fits 1999-2004 Jeep Grand Cherokee, front lower. Verify the pressed-in mounting style, tapered stud dimensions, and front lower position before installation. Because this is a non-greaseable design, inspect the dust boot and surrounding suspension components during service. Professional installation and alignment checks are recommended after replacement.

Quality Assurance

Delphi subjects steering and suspension parts to extreme temperature testing and extended salt-spray exposure, along with dimensional and material analysis, to support OE-style fit and durability for the aftermarket. Delphi TC3665 is built as a standard replacement ball joint for the listed Jeep applications.

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2018JeepWrangler JKFront Lower—
2017JeepWranglerFront Lower—
2016JeepWranglerFront Lower—
2015JeepWranglerFront Lower—
2014JeepWranglerFront Lower—
2013JeepWranglerFront Lower—
2012JeepWranglerFront Lower—
2011JeepWranglerFront Lower—
2010JeepWranglerFront Lower—
2009JeepWranglerFront Lower—
2008JeepWranglerFront Lower—
2007JeepWranglerFront Lower—
2004JeepGrand CherokeeFront Lower—
2003JeepGrand CherokeeFront Lower—
2002JeepGrand CherokeeFront Lower—
2001JeepGrand CherokeeFront Lower—
2000JeepGrand CherokeeFront Lower—
1999JeepGrand CherokeeFront Lower—
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
MOOG Chassis Products — K3134TMOOG Chassis Products — K3185MOOG Chassis Products — K7429Mopar — 68004085AA5012432AABJ96026