Brands Vehicles
Lowest Prices
Free Returns
Online Since 2009
JOIN GEARS TO SAVE 5%
Shop All Brands Shop All Vehicles

  2. Auto Parts
  3. Suspension
  4. Shocks and Struts
  5. Shock Absorber
  6. ACDelco 550-178

ACDelco 550-178 Shock Absorber

ACDelco 550-178 Shock Absorber

ACDelco
Brand:ACDelco
Part Number: 550-178
UPC: 00021625909172
Weight: 4.06 lbs
Condition:New



Availability:
0 in Stock
 OUT OF STOCK

Product Information

Description:

Get the ACDelco 550-178 Shock Absorber for your vehicle. Buy now and secure your purchase online!

ACDelco GM Original Equipment Shock Absorbers are GM-recommended replacements for your vehicle's original components. Shock absorbers help absorb and dampen road input into your vehicle's suspension, helping provide proper feel and control of your vehicle. These original equipment shock absorbers have been manufactured to fit your GM vehicle, providing the same performance, durability and service life you expect from General Motors. WARNING: Cancer and Reproductive Harm - https://www.P65Warnings.ca.gov

Stay with the parts brand your General Motors vehicle came with and get the quality you know and trust with ACDelco GM Original Equipment Suspension Components. ACDelco GM OE replacement parts give you the peace of mind that the fit, form, and function is up to the high standards and specifications of General Motors. ACDelco GM Original Equipment Suspension Components are manufactured for many makes and models of GM car, light duty truck, and sport utility vehicle.

Features and Benefits:

  • GM-recommended replacement part for your GM vehicle's original factory component
  • Helps absorb and dampen road input into your vehicle's suspension
  • Manufactured to GM OE specification for fit, form, and function
  • Offering the quality, reliability, and durability of GM OE
  • Your vehicle's shocks slowly deteriorate over time, though this wear is normally difficult to detect. Worn shocks can also cause additional wear to other vehicle components, so to maximize your vehicle's ride comfort, it is recommended to inspect your vehicle's shocks every year. Be sure to always refer to your Vehicle Owner's manual for additional vehicle maintenance practices. Potentially affected components include but are not limited to:
  • – Ball joints and other suspension components
  • – Brakes
  • – Tires
  • To inspect your shocks to gauge wear, check for:
  • – Bent or scratched piston rod
  • – Broken mounts
  • – Broken, damaged, or missing mounting hardware
  • – Cupped tire wear
  • – Damaged spring seat, spring, and spring isolator
  • – Dented reservoir tube
  • – Leaking oil or wetness along the body of the shock or strut

Specifications:

Adjustable:
No
Body Diameter:
2 in.
Boot Included:
NO
Coil Over Springs Included:
No
Compressed Length:
10.97 in.
Dust Shield:
Yes
Gas Charged:
YES
Height:
6.6 in.
Length:
20.8 in.
Lower Mount Type:
Eye
Programming Required:
NO
Shock Absorber Body End Measuring Point:
Center Eye
Shock Absorber Rod End Measuring Point:
Center Eye
Travel Length:
5.53 in.
Upper Mount Type:
Eye
Weight:
4.06 lb
Width:
7.9 in.

Manufacturer Warranty:

Limited Lifetime Warranty (Parts Only). Please see ACDelco.com for more details.

Select a vehicle to narrow ACDelco 550-178 Shock Absorber fitment info!

Last Updated: 07/17/2022

Years Vehicle Per Vehicle Position Fit NotesFitment Notes

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
Chevrolet Astro

4.3L V6 Gas OHV
2
 
Front
 
GM Original Equipment
AWD
 

Chevrolet Astro



4.3L V6 Gas OHV

Front GM Original Equipment
AWD

2 Per Vehicle

1995

 

1995

 
Chevrolet Astro

4.3L V6 Gas OHV
2
 
Front
 
GM Original Equipment
REPLACES FIBERGLASS AND STEEL REAR SPRINGS
AWD
 

Chevrolet Astro



4.3L V6 Gas OHV

Front GM Original Equipment
REPLACES FIBERGLASS AND STEEL REAR SPRINGS
AWD

2 Per Vehicle

1994

 

1993

 

1992

 

1991

 

1990

 

1994

 

1993

 

1992

 

1991

 

1990

 
Chevrolet Astro

4.3L V6 Gas OHV
2
 
Front
 
GM Original Equipment
AWD
 

Chevrolet Astro



4.3L V6 Gas OHV

Front GM Original Equipment
AWD

2 Per Vehicle

1990

 

1990

 
Chevrolet Astro

2.5L L4 Gas OHV
2
 
Front
 
GM Original Equipment
AWD
 

Chevrolet Astro



2.5L L4 Gas OHV

Front GM Original Equipment
AWD

2 Per Vehicle

1991

 

1991

 
Chevrolet K2500

7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
 

Chevrolet K2500



7.4L V8 Gas OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)

2 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
Chevrolet K2500

4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.2L V8 Diesel OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
 

Chevrolet K2500



4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.2L V8 Diesel OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)

2 Per Vehicle

1993

 

1992

 

1993

 

1992

 
Chevrolet K2500 Suburban

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
 

Chevrolet K2500 Suburban



5.7L V8 Gas OHV,
7.4L V8 Gas OHV

Front GM Original Equipment

2 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
Chevrolet K3500

5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 131.5 In.
 

Chevrolet K3500



5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 131.5 In.

2 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
Chevrolet K3500

5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 155.5 In.
 

Chevrolet K3500



5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 155.5 In.

2 Per Vehicle

1991

 

1991

 
GMC K2500

7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
 

GMC K2500



7.4L V8 Gas OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)

2 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
GMC K2500

4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.2L V8 Diesel OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
 

GMC K2500



4.3L V6 Gas OHV,
5.0L V8 Gas OHV,
5.7L V8 Gas OHV,
6.2L V8 Diesel OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)

2 Per Vehicle

1993

 

1992

 

1993

 

1992

 
GMC K2500 Suburban

5.7L V8 Gas OHV,
7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
 

GMC K2500 Suburban



5.7L V8 Gas OHV,
7.4L V8 Gas OHV

Front GM Original Equipment

2 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
GMC K3500

5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 131.5 In.
 

GMC K3500



5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 131.5 In.

2 Per Vehicle

1991

 

1990

 

1989

 

1988

 

1991

 

1990

 

1989

 

1988

 
GMC K3500

5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV
2
 
Front
 
GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 155.5 In.
 

GMC K3500



5.7L V8 Gas OHV,
6.2L V8 Diesel OHV,
7.4L V8 Gas OHV

Front GM Original Equipment
EXCEPT CAMPER EQUIPMENT(Z81), PROVISION FOR HEAVY DUTY TRAILER EQUIPMENT(Z82), REAR AUXILLIARY ASSIST SPRING(5J9)
8600 LBS / 3900 KG GVWR(C6P)
Wheel Base 155.5 In.

2 Per Vehicle

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 

2005

 

2004

 

2003

 

2002

 

2001

 

2000

 

1999

 

1998

 

1997

 

1996

 
GMC Safari

4.3L V6 Gas OHV
2
 
Front
 
GM Original Equipment
AWD
 

GMC Safari



4.3L V6 Gas OHV

Front GM Original Equipment
AWD

2 Per Vehicle

1995

 

1995

 
GMC Safari

4.3L V6 Gas OHV
2
 
Front
 
GM Original Equipment
REPLACES FIBERGLASS AND STEEL REAR SPRINGS
AWD
 

GMC Safari



4.3L V6 Gas OHV

Front GM Original Equipment
REPLACES FIBERGLASS AND STEEL REAR SPRINGS
AWD

2 Per Vehicle

1994

 

1993

 

1992

 

1991

 

1990

 

1994

 

1993

 

1992

 

1991

 

1990

 
GMC Safari

4.3L V6 Gas OHV
2
 
Front
 
GM Original Equipment
AWD
 

GMC Safari



4.3L V6 Gas OHV

Front GM Original Equipment
AWD

2 Per Vehicle

1990

 

1990

 
GMC Safari

2.5L L4 Gas OHV
2
 
Front
 
GM Original Equipment
AWD
 

GMC Safari



2.5L L4 Gas OHV

Front GM Original Equipment
AWD

2 Per Vehicle