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Focus Auto Parts Air Suspension Spring P/N:Q4001
$93.99
Support a level rear ride height and a smooth, air-cushioned ride with the Focus Auto Parts Air Suspension Spring (P/N Q4001). This rear air spring drops in as a direct-fit replacement for a wide range of Mercedes-Benz SUVs, including the 2007-2009 GL320, 2010-2016 GL350, 2007-2016 GL450, 2016-2018 GLE350, 2017-2019 GLS450, and 2006-2015 ML350 — see the Buyer's Guide tab for the full application list.
- Rear air spring: replaces a worn or leaking rear air suspension spring to help maintain the vehicle's designed ride height and air-cushioned ride quality.
- Sold individually: the listed applications use two per vehicle — order 2 for a complete rear replacement, and it's good practice to replace both sides together.
- Country of origin: China.
Signs a rear air spring may need replacing include a sagging or uneven rear ride height, a harsher ride, audible air leaks, or the air compressor cycling more often than normal. These symptoms can have other causes, so diagnose the air suspension system before replacing — if a failed rear air spring is the cause, this unit replaces it. Manufacturer part number Q4001.
Frequently Asked Questions
What is this part?
It's a rear air suspension spring (Focus Auto Parts P/N Q4001) that replaces a worn or leaking rear air spring to help maintain the vehicle's designed ride height and air-cushioned ride.
How many do I need?
The listed applications use two per vehicle, so order 2 for a complete rear replacement. This listing is for one; it's best practice to replace both sides together.
Will it fit my vehicle?
It's a direct-fit replacement for many Mercedes-Benz GL, GLE, GLS, and ML models. Check the Buyer's Guide tab to confirm your exact year and model.
What are the signs a rear air spring needs replacing?
Common signs include a sagging or uneven rear ride height, a harsher ride, audible air leaks, or the air compressor cycling more often than normal.
Where is this part made?
The country of origin is China. Manufacturer part number Q4001.
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Focus Auto Parts Air Suspension Spring P/N:Q4001
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