Search  for anything...
ACDelco

ACDelco Gold 504-554 (88946642) Rear Air Lift Shock Absorber

  • Based on 655 reviews
Condition: New
Checking for the best price...
$184.54 Why this price?
Save $105.45 was $289.99

Buy Now, Pay Later

As low as $30.76 / mo
  • – 6-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Homestead Supply & More ✅
Arrives May 13 – May 14
Order within 13 hours and 5 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Features

  • Can maintain ride height with up to 1,100 lbs (per pair) of additional temporary leveling capacity to help improve vehicle handling and reduce the risk of undercarriage damage
  • Adjustable air pressure to custom tune each individual load weight
  • The super finished chromed piston rod provides anti-corrosion support, a more consistent wear surface, proper seal lubrication, and longer product life
  • Real-world tested to ensure that the shocks will fit intended vehicles and applications
  • Not to exceed vehicle GVWR (Gross Vehicle Weight Rating). Product does not increase payload.
  • Meticulously tested to be free of manufacturing defects in materials and craftsmanship

Description

ACDelco Specialty Air Lift Shocks are designed to help provide better handling for temporary situations, such as when a vehicle hauls a heavy load or tows a trailer. They have an adjustable air pressure, between 25 and 200 psi, and up to 1,100 lbs (per pair) of load-carrying capacity. Under loaded conditions, these shocks help maintain level vehicle height by adding or releasing air as needed, assisting in the stabilization of alignment angles, reducing other suspension component wear, improving handling, and reducing the risk of bottoming out. ACDelco Specialty Air Lift Shocks are ideal for temporary load hauling, including towing boats and trailers. Not to exceed vehicle GVWR (Gross Vehicle Weight Rating). Product does not increase payload.

Brand: ACDelco


Auto Part Position: Rear


Style: Adjustable


Vehicle Service Type: Trailer


Exterior Finish: Coated


Brand Name: ACDelco


Model Number: 504-554


Manufacturer Part Number: 88946642


OEM Equivalent Part Number: 88946642


Global Trade Identification Number: 75


UPC: 021625322575


Item Weight: 3.6 Pounds


Unit Count: 1.0 Count


Item Type Name: ACDelco - Rear Air Lift S (Slp) (504-554)


Manufacturer: ACDelco


Included Components: ACDelco - Rear Air Lift S (Slp) (504-554)


Manufacturer Warranty Description: 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please seefor more details.


Auto Part Position: Rear


Compatible with Vehicle Type: Trailer


Automotive Fit Type: Universal Fit


Style Name: Adjustable


Exterior Finish: Coated


Material Type: Metal


Extended Length: 382.02 Millimeters


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 13 – May 14

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Update after 25 days of heavy use, bushings were bolt goes through wore out.
Quality was good and fit perfect, the only thing I didn't like was the tiny ⅛ air hose. I ended up buying a reducer from¼ to ⅛ cut the tiny hose about 6 inches from the shock. Installed the reducer on each side. Ran both ¼ dot plastic hose to a 3 way tee so that I could run one hose to the front of my truck. Bought a ¼ check valve connected my set up to a small air compressor were I can control it inside my cab. I run right around 60 psi on a 05 crew cab. She drives so much better. Sorry about the way i described my set up just striaght to the point. And haven't had any leaks so far. ... show more
Reviewed in the United States on September 1, 2023 by VORTEC6004
    • GREAT SHOCK!
I love these, they are actualy normal oil filled shocks with a air bladder helper. Installed easy, don't leak and work great to stop squat and poor handling when driving with about 300-500 lbs in the bed. I only wish I could get the same product for the front of my 2016 silverado.
Reviewed in the United States on November 5, 2020 by Louis J Dupuis
    • Great load upgrade
Easily installed and work great. I needed a little boost to the back of my truck for a trailer and airbags would bottom. These shocks worked great. Way better ride than I remember from my old “nova ss days” I sue maybe forty pounds to bring the loaded back end up to level from the 2 inches it drops.
Reviewed in the United States on January 28, 2023 by trailrunner
    • So far so good, tighten those fittings!
I have a solid plywood drawer system in my 8’ bed, and it’s loaded. And my typical shocks didn’t really provide any comfort or confidence. So I looked for an inexpensive solution. So far so good. But my first time for this kind of change-out was your, “that-looks-simple” project. Though someone with a modicum of mechanical skill and common sense could decipher the pictorial and cursory written instructions for the plumbing, there were NO installation tips for the shocks themselves. Did the whole change without a jack, so that was nice. After first inflation, the fill valve leaked. The local hardware sells the 1-way check valve core (same as a tire stem) and aside from the 30minute trip, the swap was done on under a minute. Pumped up to 60lbs. A slow leak over the next week dropped psi to 40. I got back up under the truck and tightened the fittings on the shocks. The double O ring and compression fitting are deceptive in the 1 inch deep threaded coupler. I simply didn’t have them fully threaded on. They will turn all the way to the shock body. The force required made a more than a little cautious since these Attlee made of plastic and I didn’t want to strip the threads. They do seem to “stop” when they hit bottom, but the closer they get the harder they turn. Tighten those buggers slowly and small moves. I settled at 55lbs (no particular reason other than it felt more sturdy yet had some travel.) A week hence and the pressure is holding. The ride is more pleasant and firm. The truck doesn’t dip and sway so much over RR tracks and around corners. We’ll see how they hold up thru the winter. ... show more
Reviewed in the United States on November 5, 2021 by Glenn Bennett
    • Lasted under 4 months. These are cheap junk labeled AC Delco.
These were ASE Certified Maser Tech installed. I noticed prior to install that they were cheaply labeled AC Delco with stickers and nothing about them looked like an OEM grade part. I was weary but disregarded this and listened to the many good reviews. They started off great with a very nice ride and providing great lift. But immediately there was an air leak which was confirmed to be one of the shocks and not the air lines. Since I have an fill on demand system in the truck, I didn't bother with a return. Then after less that 4 months, a clunking noise began. A quick look under the truck revealed that the shocks walked off all four bushings and were making contact with the mounts of the vehicle instead of being isolated by the rubber parts. Absolute waste of $109. Tossing in the trash since I am not wasting my time with a warranty replacement for the same junk. ... show more
Reviewed in the United States on February 5, 2023 by KEYSER_SOZE
    • Grandfather
Very good price and very good product
Reviewed in the United States on May 5, 2025 by william lively
    • i put them on my 2wd 01 tahoe work great
came in a week earlier badass ,fitment was on point ,looks good ,no leaks like some claim ,i put them on my 2001 chevy tahoe 2wd , when i tried looking for some all i get are the one that use the push and small c clamp connection for air hose those suck and leak so i wanted the screw on connection so i went with this 4wd ,2wd same thing ....good deal ... show more
Reviewed in the United States on June 17, 2020 by Moreno Inc
    • For trucks, not cars!
Too tall for 2006 Town and country, bottoms out the shock and bangs hard if you don't jack up the back and looks stupid that way.
Reviewed in the United States on November 8, 2022 by walker&company

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...