Delphi TC1637 Suspension Ball Joint - Front Lower
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Delphi

Delphi TC1637 Suspension Ball Joint - Front Lower

Brand Delphi TC1637
Position Front Lower
Adjustable No
Ball Joint Assembly Yes
Bushings Included No
Castle Nut Included Yes
Color Gray
Cotter Pin Hole Yes
Cotter Pin Included Yes
Dust Boot Included Yes
Dust Boot Material Choloroprene Rubber (CR)
Grease Fitting Included Yes
Greaseable Yes
Height 4.685
Item Grade Standard Replacement
Length 119
Material Ball Material - Alloy Steel SAE 5140, Housing Material - Carbon Steel SAE 1040
Maximum Outside Diameter 2.5
Maximum Outside Diameter 63.5
Mount Plate Included No
Mounting Bolts Included No
Mounting Hardware Included Yes
Mounting Type Press In
Nuts Included Yes
Stud Taper Per Foot 0.167
Stud Tapered End 1 Diameter 0.827
Stud Tapered End 1 Diameter 21.0
Stud Tapered End 2 Diameter 0.672
Stud Tapered End 2 Diameter 17.08
Stud Thread Diameter 0.625
Stud Thread Length 0.886
Stud Threads Per Inch 18
Stud Type Threaded
Suspension Grade Type Standard
Tapered Stud Yes
Washers Included No
Width 63.5
Fits Chevrolet, GMC, Cadillac, Buick, Oldsmobile, and Pontiac · 156 vehicles

Standard replacement. OE-style fit and dimensional compatibility for straightforward service.

Greaseable design. Includes a grease fitting and dust boot for easier maintenance.

Press-in mounting. Ball joint assembly with included hardware for a complete install.

Cross-references Mevotech Supreme MK6141, MOOG Chassis Products K6141 and 7808865 for the same application. See all 10.

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Front Lower Ball Joint for OE-Style Suspension Service

Delphi TC1637 is a standard replacement suspension ball joint for front lower applications on a wide range of classic GM and Cadillac platforms. It is built with OE-focused dimensional and material analysis to support proper fitment on vehicles such as Chevrolet Astro, GMC Safari, and Chevrolet Caprice.

  • Front lower suspension ball joint
  • Press-in mounting type
  • Greaseable design with grease fitting included
  • Dust boot included for joint protection
  • Castle nut, cotter pin, nuts, and mounting hardware included
  • Ball material: Alloy Steel SAE 5140
  • Housing material: Carbon Steel SAE 1040
  • Standard replacement, non-adjustable design
  • Threaded, tapered stud with cotter pin hole

Built for OE Fit and Material Consistency

Delphi TC1637 is engineered as a front lower suspension ball joint with a press-in mount, threaded tapered stud, and greaseable service design. The alloy steel ball and carbon steel housing are paired with a chloroprene rubber dust boot to help protect the joint in demanding suspension environments. Delphi validates its steering and suspension parts through temperature and corrosion testing, including exposure below -40 degrees C, above 120 degrees C, and extended salt spray testing, helping support durability in real-world use. This part cross-references MOOG Chassis Products K6141 and Mevotech Supreme MK6141 for the same application.

Vehicle Fitment

  • Fits 1985-2005 Chevrolet Astro, front lower
  • Fits 1985-2005 GMC Safari, front lower
  • Fits 1994-1996 Chevrolet Caprice, front lower, 5/8in stud diameter; Public Service Vehicles
  • Fits 1971-1993 Chevrolet Caprice, front lower
  • Fits 1987-1992 Cadillac Brougham, front lower, with armored body equipment
  • Fits 1992 Cadillac Commercial Chassis, front lower
  • Fits 1977-1982 Cadillac Commercial Chassis, front lower
  • Fits 1977-1984 Cadillac DeVille, front lower, with short sill cowl
  • Fits 1977-1984 Cadillac Fleetwood, front lower
  • Fits 1971-1976 Buick LeSabre, front lower
  • Fits 1971-1976 Buick Riviera, front lower
  • Fits 1971-1976 Chevrolet Impala, front lower
  • Fits 1971-1976 Oldsmobile 98, front lower
  • Fits 1971-1976 Oldsmobile Custom Cruiser, front lower
  • Fits 1971-1976 Oldsmobile Delta 88, front lower
  • Fits 1971-1976 Pontiac Bonneville, front lower
  • Fits 1971-1976 Pontiac Catalina, front lower
  • Fits 1976 Pontiac Parisienne, front lower
  • Fits 1971-1974 Pontiac Parisienne, front lower
  • Fits 1971-1975 Chevrolet Bel Air, front lower

Installation Notes and Tips

Verify the front lower position and press-in style before installation. Confirm stud diameter, taper, and thread specifications against the removed part, especially on applications with notes such as public service vehicles or armored body equipment. Because this is a greaseable ball joint, service the fitting after installation and inspect the dust boot for proper seating.

Quality Assurance

Delphi applies OE engineering methods to its aftermarket steering and suspension portfolio, including dimensional and material analysis for part compatibility. TC1637 is tested for temperature extremes and corrosion resistance to support consistent performance in suspension service.

Related reading

This part fits 156 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypePositionNotes
2005ChevroletAstro—RWDFront Lower—
2005GMCSafari—RWDFront Lower—
2004ChevroletAstro—RWDFront Lower—
2004GMCSafari—RWDFront Lower—
2003ChevroletAstro—RWDFront Lower—
2003GMCSafari—RWDFront Lower—
2002ChevroletAstro—RWDFront Lower—
2002GMCSafari—RWDFront Lower—
2001ChevroletAstro—RWDFront Lower—
2001GMCSafari—RWDFront Lower—
2000ChevroletAstro—RWDFront Lower—
2000GMCSafari—RWDFront Lower—
1999ChevroletAstro—RWDFront Lower—
1999GMCSafari—RWDFront Lower—
1998ChevroletAstro—RWDFront Lower—
1998GMCSafari—RWDFront Lower—
1997ChevroletAstro—RWDFront Lower—
1997GMCSafari—RWDFront Lower—
1996ChevroletAstro—RWDFront Lower—
1996ChevroletCaprice——Front Lower5/8in Stud Diameter; Public Service Vehicles
1996GMCSafari—RWDFront Lower—
1995ChevroletAstro—RWDFront Lower—
1995ChevroletCaprice——Front Lower5/8in Stud Diameter; Public Service Vehicles
1995GMCSafari—RWDFront Lower—
1994ChevroletAstro—RWDFront Lower—
1994ChevroletCaprice——Front Lower5/8in Stud Diameter; Public Service Vehicles
1994GMCSafari—RWDFront Lower—
1993ChevroletAstro—RWDFront Lower—
1993ChevroletCaprice——Front Lower—
1993GMCSafari—RWDFront Lower—
1992CadillacBrougham——Front Lowerwith Armored Body Equipment
1992CadillacCommercial Chassis——Front Lower—
1992ChevroletAstro—RWDFront Lower—
1992ChevroletCaprice——Front Lower—
1992GMCSafari—RWDFront Lower—
1991CadillacBrougham——Front Lowerwith Armored Body Equipment
1991ChevroletAstro—RWDFront Lower—
1991ChevroletCaprice——Front Lower—
1991GMCSafari—RWDFront Lower—
1990CadillacBrougham——Front Lowerwith Armored Body Equipment
1990ChevroletAstro—RWDFront Lower—
1990ChevroletCaprice——Front Lower—
1990GMCSafari—RWDFront Lower—
1989CadillacBrougham——Front Lowerwith Armored Body Equipment
1989ChevroletAstro——Front Lower—
1989ChevroletCaprice——Front Lower—
1989GMCSafari——Front Lower—
1988CadillacBrougham——Front Lowerwith Armored Body Equipment
1988ChevroletAstro——Front Lower—
1988ChevroletCaprice——Front Lower—
1988GMCSafari——Front Lower—
1987CadillacBrougham——Front Lowerwith Armored Body Equipment
1987ChevroletAstro——Front Lower—
1987ChevroletCaprice——Front Lower—
1987GMCSafari——Front Lower—
1986ChevroletAstro——Front Lower—
1986ChevroletCaprice——Front Lower—
1986GMCSafari——Front Lower—
1985ChevroletAstro——Front Lower—
1985ChevroletCaprice——Front Lower—
1985GMCSafari——Front Lower—
1984CadillacDeVille——Front Lowerwith Short Sill Cowl
1984CadillacFleetwoodFormal—Front Lower—
1984ChevroletCaprice——Front Lower—
1983CadillacDeVille——Front Lowerwith Short Sill Cowl
1983CadillacFleetwoodFormal—Front Lower—
1983ChevroletCaprice——Front Lower—
1982CadillacCommercial Chassis——Front Lower—
1982CadillacDeVille——Front Lowerwith Short Sill Cowl
1982CadillacFleetwoodFormal—Front Lower—
1982ChevroletCaprice——Front Lower—
1981CadillacCommercial Chassis——Front Lower—
1981CadillacDeVille——Front Lowerwith Short Sill Cowl
1981CadillacFleetwoodFormal—Front Lower—
1981ChevroletCaprice——Front Lower—
1980CadillacCommercial Chassis——Front Lower—
1980CadillacDeVille——Front Lowerwith Short Sill Cowl
1980CadillacFleetwoodFormal—Front Lower—
1980ChevroletCaprice——Front Lower—
1979CadillacCommercial Chassis——Front Lower—
1979CadillacDeVille——Front Lowerwith Short Sill Cowl
1979CadillacFleetwoodFormal—Front Lower—
1979ChevroletCaprice——Front Lower—
1978CadillacCommercial Chassis——Front Lower—
1978CadillacDeVille——Front Lowerwith Short Sill Cowl
1978CadillacFleetwoodFormal—Front Lower—
1978ChevroletCaprice——Front Lower—
1977CadillacCommercial Chassis——Front Lower—
1977CadillacDeVille——Front Lowerwith Short Sill Cowl
1977CadillacFleetwoodFormal—Front Lower—
1977CadillacFleetwood75—Front Lower—
1977ChevroletCaprice——Front Lower—
1976BuickLeSabre——Front Lower—
1976BuickRiviera——Front Lower—
1976ChevroletCaprice——Front Lower—
1976ChevroletImpala——Front Lower—
1976Oldsmobile98——Front Lower—
1976OldsmobileCustom Cruiser——Front Lower—
1976OldsmobileDelta 88——Front Lower—
1976PontiacBonneville——Front Lower—
1976PontiacCatalina——Front Lower—
1976PontiacParisienne——Front Lower—
1975BuickLeSabre——Front Lower—
1975BuickRiviera——Front Lower—
1975ChevroletBel Air——Front Lower—
1975ChevroletCaprice——Front Lower—
1975ChevroletImpala——Front Lower—
1975Oldsmobile98——Front Lower—
1975OldsmobileCustom Cruiser——Front Lower—
1975OldsmobileDelta 88——Front Lower—
1975PontiacBonneville——Front Lower—
1975PontiacCatalina——Front Lower—
1974BuickLeSabre——Front Lower—
1974BuickRiviera——Front Lower—
1974ChevroletBel Air——Front Lower—
1974ChevroletCaprice——Front Lower—
1974ChevroletImpala——Front Lower—
1974Oldsmobile98——Front Lower—
1974OldsmobileCustom Cruiser——Front Lower—
1974OldsmobileDelta 88——Front Lower—
1974PontiacBonneville——Front Lower—
1974PontiacCatalina——Front Lower—
1974PontiacParisienne——Front Lower—
1973BuickLeSabre——Front Lower—
1973BuickRiviera——Front Lower—
1973ChevroletBel Air——Front Lower—
1973ChevroletCaprice——Front Lower—
1973ChevroletImpala——Front Lower—
1973Oldsmobile98——Front Lower—
1973OldsmobileCustom Cruiser——Front Lower—
1973OldsmobileDelta 88——Front Lower—
1973PontiacBonneville——Front Lower—
1973PontiacCatalina——Front Lower—
1973PontiacParisienne——Front Lower—
1972BuickLeSabre——Front Lower—
1972BuickRiviera——Front Lower—
1972ChevroletBel Air——Front Lower—
1972ChevroletCaprice——Front Lower—
1972ChevroletImpala——Front Lower—
1972Oldsmobile98——Front Lower—
1972OldsmobileCustom Cruiser——Front Lower—
1972OldsmobileDelta 88——Front Lower—
1972PontiacBonneville——Front Lower—
1972PontiacCatalina——Front Lower—
1972PontiacParisienne——Front Lower—
1971BuickLeSabre——Front Lower—
1971BuickRiviera——Front Lower—
1971ChevroletBel Air——Front Lower—
1971ChevroletCaprice——Front Lower—
1971ChevroletImpala——Front Lower—
1971Oldsmobile98——Front Lower—
1971OldsmobileCustom Cruiser——Front Lower—
1971OldsmobileDelta 88——Front Lower—
1971PontiacBonneville——Front Lower—
1971PontiacCatalina——Front Lower—
1971PontiacParisienne——Front Lower—
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Mevotech Supreme — MK6141MOOG Chassis Products — K614178088657814131975437897614989766421B6141JBJ903K6141T