Front Shock Absorber - ACDelco (525-66)
ACDelco - 52566
Sale Price$71.70
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. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- Min. 12 Months
- Safe, Secure Checkout
Product Details
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. ⚠ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Part Number (MPN)
525-66
Brand
SKU
525-66
UPC / GTIN
021625509167 / 00021625509167
Condition
New
Other Names
88959173
Position
Front
Brand
ACDelco Gold
Adjustable
No
Body Diameter
2.19<br />55.63
Boot Included
No
Coil Over Springs Included
No
Compressed Length
10.96<br />278.384
Dust Shield
Yes
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.
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 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 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 - Question 1
Is there a difference between a shock and a strut?
FAQ - Question 2
Do gas charged shocks or struts contain oil?
FAQ - Question 3
Can I check my vehicle's shocks for wear?
FAQ - Question 4
Should I have my vehicle aligned after replacing my shocks or struts?
FAQ - Question 5
Do I need different shocks for front, rear, left, or right applications?
Features & Benefits - Bullet 1
Larger body allows for increased fluid capacity and cooler running for superior performance
Features & Benefits - Bullet 2
Bonded iron piston and compression head provides exceptional durability
Features & Benefits - Bullet 3
Extra-large 1-5/8 inch piston bore and 9/16 inch piston rod diameter for excellent stability and strength
Features & Benefits - Bullet 4
Heavy duty arc-welded end mounts for maximum strength and greater resistance to damage
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
Features & Benefits - Bullet 6
Fit and ride tested to ensure that the shocks will fit intended vehicles and applications
Fully Open Length (in)
15.59in
Fully Open Length (mm)
395.986mm
Gas Charged
No
Good Maintenance Practices - Section 1 - Bullet 1
Brakes
Good Maintenance Practices - Section 1 - Bullet 2
Tie rods
Good Maintenance Practices - Section 1 - Bullet 3
Ball joints
Good Maintenance Practices - Section 1 - Bullet 4
Tires
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:
Good Maintenance Practices - Section 2 - Bullet 1
Leaking oil or wetness along the body of the shock or strut.
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.
Good Maintenance Practices - Section 2 - Bullet 4
Severely dented reservoir tube, bent or scratched piston rod.
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.
Good Maintenance Practices - Section 2 - Header
To inspect your shocks and struts to gauge wear, check for:
Height (in)
3.3
Length (in)
20
Lower Mount Type
Stud
Mounting Hardware Included
Yes
Programming Required
No
Shock Absorber Body End Measuring Point
Center Eye
Shock Absorber Rod End Measuring Point
Shoulder of Stem
Shock Stroke
117.6
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 1 - Bullet 3
Your vehicle does not return to a neutral position
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 2
Your vehicle bounces excessively
Signs of Wear & Troubleshooting - Section 2 - Bullet 3
Your vehicle veers in side winds
Signs of Wear & Troubleshooting - Section 2 - Bullet 4
Your vehicle leans or sways while turning
Signs of Wear & Troubleshooting - Section 2 - Bullet 5
Your vehicle bounces excessively after hitting a bump
Signs of Wear & Troubleshooting - Section 2 - Bullet 6
Your vehicle bottoms out
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:
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 2
If you notice fluid leakage from your vehicle's shocks or struts
Signs of Wear & Troubleshooting - Section 3 - Bullet 3
If your vehicle's shocks or struts have dented or heavily scratched housings or mounts
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:
Travel Length
4.63<br />117.6
Upper Mount Type
Stud
Weight (lb)
4.68
Width (in)
4.1
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|---|---|---|---|
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission
| Brand | Equivalent Part Numbers |
|---|---|
BrandEquivalent Part Numbers
GM
88959173
Shipping Policy
- In stock orders ship within 24 hours.
- Weekend orders will be processed the next business day.
- If a part is not in stock and must be ordered from the manufacturer, it usually takes 2-3 days to arrive to us and will be promptly shipped to you. Most of the orders are shipped complete within 2-3 business days. A few of the parts ordered from the manufacturer may take up to 5-6 business days to arrive and will shipped to you immediately.
- Depending upon location, ground shipments usually take 2-7 days.
- Your order may be shipped Overnight for an additional cost.
- Oversized shipments will be additional; you will be contacted prior to shipping for approval.
- We cannot guarantee transit times for ground and oversize orders.
- Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost to the customer.
- We do not ship internationally.
- In the unlikely event that a part has been placed on backorder or discontinued, we will do our best to try and find one for you as quickly as possible.
- We do not ship COD orders.
We use the following shipping parties:
- UPS
- USPS
Some products available are shipped directly from the manufacturer or supplier rather than from our own warehouse. This allows us to offer you a wider selection of parts at competitive prices. When an item shows "Drop Ship" the supplier currently has it in stock and it will typically ship within 1–2 business days
Check out our Shipping Policy for more details.
Return Policy
30-Day Return Policy – Upgrade Auto Parts
At Upgrade Auto Parts, we want you to be completely satisfied with your purchase. If for any reason you are not happy with your order, you can return it within 30 days of receiving your item for a refund or exchange, subject to the following conditions:
Eligibility: Returns are accepted on parts that are unused, in original condition, and in the original packaging. Items that have been installed, used, or modified are not eligible for return.
Shipping Costs: The customer is responsible for return shipping costs unless the return is a result of a Upgrade Auto Parts error (e.g., wrong part sent or defective item). We recommend using a trackable shipping service to ensure your return reaches us safely.
Refunds & Exchanges: Once the return is received and inspected, we will issue a refund to your original payment method or process an exchange if preferred. Refunds typically take 5-7 business days to be processed.
If you have any questions or need assistance with your return, our customer service team is here to help!
Thank you for shopping with Upgrade Auto Parts!
Check out our Return Policy for more details.
ACDelco
Browse our wide selection of parts & accessories available to be shipped directly to you!
Upgrade Auto Parts
Welcome to Upgrade Auto Parts, your trusted source for premium automotive components. We understand that finding the right parts for your vehicle can be a challenge, which is why we've made it our mission to simplify the process. From essential maintenance items to performance upgrades, our extensive catalog is built on a foundation of quality, reliability, and customer satisfaction. We're here to provide the expertise and the products you need to keep your vehicle running at its best. Drive smarter, choose Upgrade Auto Parts.