Bilstein Shock Compatability with AHC (1 Viewer)

Joined
Apr 18, 2020
Messages
27
Location
Little Rock, Arkansas
Hi All,

I'll try to keep this organized:

Sitrep: All 4 Shocks need replacing on my 05 LX with AHC system that I want to keep

Problem: 4 new AHC compatible OEM shocks (48510-69127/ 48530-69145) will cost ~$1000 all told with taxes and shipping.

Question: Bilstein shocks (4600 series) are cheaper, but are the compatible with the AHC system?
 

94SRUNNER

GOLD Star
Joined
Oct 9, 2006
Messages
3,860
Location
Dayton, OH
Hi All,

I'll try to keep this organized:

Sitrep: All 4 Shocks need replacing on my 05 LX with AHC system that I want to keep

Problem: 4 new AHC compatible OEM shocks (48510-69127/ 48530-69145) will cost ~$1000 all told with taxes and shipping.

Question: Bilstein shocks (4600 series) are cheaper, but are the compatible with the AHC system?

They are not compatible. You must replace them with either new or used AHC shocks.
 

uHu

Bridgeburner
Joined
Nov 27, 2005
Messages
2,080
Location
Oslo, Norway
Why would you want to change the shocks on an AHC equipped truck? It doesn't have shocks like a conventional suspension system has. Suspension damping happens in the actuators, not in what looks like shocks. Have you read the AHC threads in here? If you did, you could change your username soon :)
 
Joined
Oct 12, 2011
Messages
808
Location
Calgary, Alberta
I'll bet that your shocks don't need to be changed. I'll bet that your AHC neutral pressures need to be adjusted. Read:

 
Joined
Apr 18, 2020
Messages
27
Location
Little Rock, Arkansas
I'll bet that your shocks don't need to be changed. I'll bet that your AHC neutral pressures need to be adjusted. Read:


Thanks for the reply! I had my AHC neutral pressures adjusted to be close to spec (the back were too high when the front were in line) but I was still disappointed with the ride so I went looking and found these. To my untrained eye it looks like 2/4 of these are blown and 1/4 is damaged pretty significantly. Anyone care to take a look and tell me if I'm wrong?

PXL_20201021_223006603.jpg


PXL_20201021_223022540.jpg


PXL_20201021_223118928.jpg


PXL_20201021_223151257.jpg
 
Joined
Oct 12, 2011
Messages
808
Location
Calgary, Alberta
What pressures are you getting in the front and rear? Looks like they were definitely leaking. If they have subsequently been adjusted back to spec, that might just be residual oil. Consider cleaning it off and testing to see if it re-emerges. At the same time, check the fluid level and color in your AHC reservoir.

Have you checked how many graduations on the AHC reservoir your fluid moves from high-to-low? Harsh ride is frequently associated with shot accumulators. As an additional aside, consider checking your ball joints.
 
Last edited:

suprarx7nut

The YotaMD Guy
Supporting Vendor
Joined
Sep 28, 2010
Messages
3,902
Location
Colorado
@LXRookie those shocks (actually just hydraulic rams) look fine. Dripping fluid = bad. Wet surface = potentially fine.

AHC rams rarely go bad. When they do, they'll often be leaking with droplets of fluid.

Rusty protective sleeves are fine.
 

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