ACDELCO part description

Product Description

Front Shock Absorber

Features & Benefits

  • Fits front suspension positions on various trucks and vans, left or right
  • Monotube gas-charged configuration promotes consistent damping on uneven surfaces
  • Non-adjustable format reduces mechanical complexity and avoids calibration issues
  • Supports heavier front-end weights common in work vehicles or vans
  • Comes from the ACDelco Specialty line, tailored for higher-load driving situations

ACDelco Specialty™ Shock Absorber

Hunting for a shock absorber that fits heavy-duty use without unnecessary complexity? The ACDelco Specialty™ Shock Absorber covers front-position applications on either driver or passenger sides using a monotube configuration. Suitable for vehicles that demand firm suspension response, this non-adjustable unit uses gas-charged internal pressure to limit rebound and compression oscillation. The ACDelco 525-5 is tailored for trucks and service vehicles that carry weight consistently or travel across rough roads.

Product Attributes

Body Diameter 2.19 IN
Travel Length 4.88 in
Compressed Length 9.99 IN
Fully Open Length (in) 14.87in
Body Diameter 55.63 MM
Shock Stroke 123.95 MM
Travel Length 123.95 MM
Compressed Length 256.794 MM
Fully Open Length (mm) 377.698mm
Product Description ACDelco Specialty Heavy Duty Shocks are specifically designed for commercial or severe application use on light trucks and vans, to help handle heavy loads. Designed to handle the heavy-duty demands of fleet applications, ACDelco Specialty Heavy Duty Shocks respond with stability and control. These shocks feature an oversized (1-5/8 in) piston bore, bonded iron piston and compression heads, large piston and piston rod diameter, and heavy duty arc welded end mounts. &#9888;<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Good Maintenance Practices - Section 1 - Bullet 3 Ball joints
Features & Benefits - Bullet 2 Bonded iron piston and compression head provides exceptional durability
Good Maintenance Practices - Section 1 - Bullet 1 Brakes
Good Maintenance Practices - Section 2 - Bullet 2 Broken mounts, worn or missing bushings.
Good Maintenance Practices - Section 2 - Bullet 3 Broken, damaged, or missing mounting hardware.
FAQ - Question 3 Can I check my vehicle's shocks for wear?
Shock Absorber Rod End Measuring Point Center Eye
Shock Absorber Body End Measuring Point Center Eye
Good Maintenance Practices - Section 2 - Bullet 5 Cupped tire wear.
Good Maintenance Practices - Section 2 - Bullet 6 Damaged strut body springs, seats, and bushings.
Good Maintenance Practices - Section 2 - Bullet 7 Defective strut bearing or missing plate.
FAQ - Question 2 Do gas charged shocks or struts contain oil?
FAQ - Question 5 Do I need different shocks for front, rear, left, or right applications?
Features & Benefits - Bullet 3 Extra-large 1-5/8 inch piston bore and 9/16 inch piston rod diameter for excellent stability and strength
Lower Mount Type Eyelet
Upper Mount Type Eyelet
Features & Benefits - Bullet 6 Fit and ride tested to ensure that the shocks will fit intended vehicles and applications
Features & Benefits - Bullet 4 Heavy duty arc-welded end mounts for maximum strength and greater resistance to damage
Signs of Wear & Troubleshooting - Section 3 - Bullet 2 If you notice fluid leakage from your vehicle's shocks or struts
Signs of Wear & Troubleshooting - Section 3 - Bullet 1 If your vehicle's height seems lower than normal when measured
Signs of Wear & Troubleshooting - Section 3 - Bullet 3 If your vehicle's shocks or struts have dented or heavily scratched housings or mounts
FAQ - Question 1 Is there a difference between a shock and a strut?
Signs of Wear & Troubleshooting - Section 2 - Header It could be time to replace your shocks or struts if, when driving on a surface with bumps and/or dips:
Features & Benefits - Bullet 1 Larger body allows for increased fluid capacity and cooler running for superior performance
Good Maintenance Practices - Section 2 - Bullet 1 Leaking oil or wetness along the body of the shock or strut.
Gas Charged No
Adjustable No
Boot Included No
Coil Over Springs Included No
Programming Required No
Good Maintenance Practices - Section 2 - Bullet 4 Severely dented reservoir tube, bent or scratched piston rod.
FAQ - Question 4 Should I have my vehicle aligned after replacing my shocks or struts?
Features & Benefits - Bullet 5 The super finished, chromed, piston rod provides anti-corrosion support, a more consistent wear surface, proper seal lubrication, and longer product life
Signs of Wear & Troubleshooting - Section 1 - Bullet 3 Your vehicle does not return to a neutral position
Good Maintenance Practices - Section 1 - Bullet 2 Tie rods
Good Maintenance Practices - Section 1 - Bullet 4 Tires
Good Maintenance Practices - Section 2 - Header To inspect your shocks and struts to gauge wear, check for:
Signs of Wear & Troubleshooting - Section 3 - Header Uneven patches of wear on the edges of your tire can be a sign of weak ride control (shocks or struts). This wear, called cupping, appears as scalloped dips around the surface of the tread. Other signs it could be time to replace your shocks or struts include:
Dust Shield Yes
Mounting Hardware Included Yes
FAQ - Answer 2 Yes, all shocks and struts use hydraulic fluid (oil) to control damping. A gas charged shock or strut uses high-pressure nitrogen gas to reduce oil foaming during high-speed damping, and therefore maintains performance.
FAQ - Answer 4 Yes, if you are replacing your vehicle's struts. However, it is not necessary to get your vehicle aligned when replacing your vehicle's shocks unless there was or is a previous issue.
FAQ - Answer 5 Yes, it is important to choose the correct shock or strut for your vehicle model and year, as well as for the location in the vehicle.
FAQ - Answer 3 Yes, it is possible to do a quick check at home for wear on your vehicle's shocks or struts. You can look for any physical damage to the shock or strut housing or any leaking - this is especially common on rear units that tend to have stones kicked up by the front wheels. You can also perform a bounce test by taking each corner of the vehicle and pushing down hard. The corner should drop, rise and settle again. If the body continues to move up and down, there's a good chance your shocks need to be replaced. Though these home tests can indicate worn shocks or struts, it is also recommended that you take your vehicle to a qualified service technician and let them do a thorough inspection every 12 months or 12,000 miles.
FAQ - Answer 1 Yes, though shocks and struts perform a similar function, they vary greatly in their design. Struts are an integral part of a vehicle's suspension system, providing structural support for the vehicle and, as such, are a safety subsystem. Shocks work separately from any structural function, simply absorbing and damping the bumps from the road.
Signs of Wear & Troubleshooting - Section 1 - Bullet 4 Your steering pulls
Signs of Wear & Troubleshooting - Section 1 - Bullet 5 There is a strut mount or bearing noise
Signs of Wear & Troubleshooting - Section 2 - Bullet 1 Your ride is harsh, bumpy or shaky
Signs of Wear & Troubleshooting - Section 2 - Bullet 6 Your vehicle bottoms out
Signs of Wear & Troubleshooting - Section 2 - Bullet 2 Your vehicle bounces excessively
Signs of Wear & Troubleshooting - Section 2 - Bullet 5 Your vehicle bounces excessively after hitting a bump
Signs of Wear & Troubleshooting - Section 1 - Bullet 1 There is excessive nose dive while braking
Signs of Wear & Troubleshooting - Section 1 - Bullet 2 Your vehicle has 'acceleration squat'
Signs of Wear & Troubleshooting - Section 2 - Bullet 4 Your vehicle leans or sways while turning
Signs of Wear & Troubleshooting - Section 2 - Bullet 3 Your vehicle veers in side winds
Good Maintenance Practices - Section 1 - Header Your vehicle's shocks and struts slowly deteriorate over time, though this wear is normally difficult to detect. To maximize your vehicle's ride comfort and safety, it is recommended to replace your vehicle's shocks and struts every 50,000 miles. Worn shocks and struts can also cause additional wear to other vehicle components. Affected components include:

Additional Information

Warranty Special 24 Months/Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details|Limited Lifetime Warranty (Parts Only). Please see ACDelcocanada.com for more details
Harmonized Tariff Code (HTS) 8708801600
Country of Origin (Primary) MX
Country of Origin 2 US
Warranty Special UOM TX
UPC 00021625508566

Fits Vehicles

  • GMC PB1000 Series (1963-1965)
  • GMC P35/P3500 Van (1968-1974)
  • GMC P25/P2500 Van (1968-1974)
  • GMC P15/P1500 Van (1967-1974)
  • GMC C35/C3500 Pickup (1967-1974)
  • GMC C25/C2500 Suburban (1968-1974)
  • GMC C25/C2500 Pickup (1967-1974)
  • GMC C15/C1500 Suburban (1968-1974)
  • GMC C15/C1500 Pickup (1967-1974)
  • GMC 1500 Series (1963-1965)
  • GMC 1000 Series (1963-1965)
  • Chevrolet Suburban (1963-1966)
  • Chevrolet P30 Van (1968-1974)
  • Chevrolet P20 Van (1968-1974)
  • Chevrolet P10 Van (1968-1974)
  • Chevrolet P10 Series (1963-1967)
  • Chevrolet C30 Pickup (1963-1974)
  • Chevrolet C20 Pickup (1963-1974)
  • Chevrolet C10 Pickup (1963-1974)
  • Chevrolet Blazer (1969-1974)
  • GMC R3500 (1987-1991)
  • GMC R2500 Suburban (1987-1991)
  • GMC R2500 (1987-1989)
  • GMC R1500 Suburban (1987-1991)
  • GMC R1500 (1987)
  • GMC P3500 (1979-1990)
  • GMC P35 (1975-1978)
  • GMC P2500 (1979-1989)
  • GMC P25 (1975-1978)
  • GMC P1500 (1979-1980)
  • GMC P15 (1975-1978)
  • GMC Jimmy (1970-1984)
  • GMC C3500 (1980-1986, 1988-1990)
  • GMC C35 (1975-1978)
  • GMC C2500 Suburban (1979-1986)
  • GMC C25 Suburban (1975-1978)
  • GMC C2500 (1979-1986)
  • GMC C25 (1975-1978)
  • GMC C1500 Suburban (1979-1986)
  • GMC C15 Suburban (1975-1978)
  • GMC C1500 (1979-1986)
  • GMC C15 (1975-1978)
  • Chevrolet R3500 (1989)
  • Chevrolet R30 (1987-1988)
  • Chevrolet R2500 Suburban (1989-1991)
  • Chevrolet R2500 (1989)
  • Chevrolet R20 Suburban (1987-1988)
  • Chevrolet R20 (1987-1988)
  • Chevrolet R1500 Suburban (1989-1991)
  • Chevrolet R10 Suburban (1987-1988)
  • Chevrolet R10 (1987)
  • Chevrolet P30 (1975-1990)
  • Chevrolet P20 (1975-1989)
  • Chevrolet P10 (1975-1980)
  • Chevrolet C3500 (1988-1991)
  • Chevrolet C30 (1975-1986)
  • Chevrolet C20 Suburban (1968-1986)
  • Chevrolet C20 (1975-1986)
  • Chevrolet C10 Suburban (1967-1986)
  • Chevrolet C10 (1975-1986)
  • Chevrolet K5 Blazer (1975-1984)

A true OEM auto parts brand for GM and non-GM vehicles, ACDelco® offers a wide portfolio of parts designed to keep vehicles on the road longer. These parts work precisely and fit perfectly because they are designed, engineered, tested, and backed by General Motors. But ACDelco also carries aftermarket components that go through the same 18-step quality approval process as the OE parts. Whether customers choose OE or aftermarket, they’d get the same reliable performance, precise engineering, and superior reliability for years to come. ACDelco’s expansive product portfolio includes alternators, filters, batteries, brakes, belts and hoses, oil and fluids, and suspension parts. These products are made to meet GM and non-GM vehicles’ ever-evolving powertrain, collision, maintenance, and repair needs.

Don't know your part number?

Take a photo and we'll identify it!

Recommended Products

More from ACDELCO (Browse all)