Unity
Non-Electronic Air Suspension Strut Assembly

Unity 18-529901 Air Suspension Strut - Rear Left

Brand Unity 18-529901
Position Rear Left
Position Rear
Product line Non-Electronic Air Suspension Strut Assembly
Fits Audi · 5 vehicles

Non-electronic assembly. Built as an air suspension strut for simpler, dependable replacement.

OEM-spec construction. Made to match original equipment requirements for confident installation.

Suspension strut. Combines air suspension support with the function of a strut assembly.

Cross-references 4Z7513031, 4Z7513031A and 4Z7513032 for the same application. See all 6.

$320.78Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Air Suspension Struts are typically replaced in pairs, axle by axle.
Order total $320.78
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Rear Left Air Suspension Strut for Audi Allroad Quattro

Restore rear suspension support with this Unity non-electronic air suspension strut assembly. It is built for the rear left position on the 2001-2005 Audi Allroad Quattro and follows OEM-style dimensions for a direct replacement application. Part number 18-529901 is a practical choice when the original air strut has lost ride height control or damping performance.

Key Features

  • Rear left air suspension strut assembly for the Audi Allroad Quattro
  • Non-electronic design for vehicles without electronic strut control
  • Built to OEM specifications for fit and function
  • Unity Automotive aftermarket suspension product line
  • Part number 18-529901 for easy identification

Product Details

Unity Automotive has more than 40 years of aftermarket manufacturing experience and focuses on suspension components built for consistent fitment and dependable service. The Non-Electronic Air Suspension Strut Assembly line is aimed at direct replacement needs where the vehicle uses a conventional air strut rather than an electronically controlled unit. This rear left assembly is made for 2001-2005 Audi Allroad Quattro models and supports the original suspension layout without changing the vehicle’s intended configuration. If you are replacing a worn rear air strut on an Audi Allroad Quattro, part number 18-529901 provides a straightforward match for the listed application.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Problems This Part Can Address

  • Rear corner sagging from a worn air strut
  • Uneven ride height at the rear left suspension position
  • Loss of damping control over bumps and road irregularities
  • Air suspension noise or instability from a failing strut assembly
  • Ride quality decline on a 2001-2005 Audi Allroad Quattro

Installation Notes and Tips

Verify that the vehicle uses a non-electronic rear left air strut before ordering. Confirm the year, make, model, and position against the vehicle’s existing suspension setup, especially on the Audi Allroad Quattro. Inspect related air suspension components, mounting points, and lines during replacement so the new strut can be installed on a clean, serviceable system. Professional installation is recommended for proper suspension handling and ride-height verification.

Quality Assurance

Unity Automotive builds suspension parts to OEM specifications and backs its products with a customer satisfaction guarantee. The brand’s suspension focus and long aftermarket history support consistent product development for replacement applications such as the rear left air suspension strut on the Audi Allroad Quattro.

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2005AudiAllroad QuattroRear LeftNon-Electronic Air Suspension Strut Assembly
2004AudiAllroad QuattroRear LeftNon-Electronic Air Suspension Strut Assembly
2003AudiAllroad QuattroRear LeftNon-Electronic Air Suspension Strut Assembly
2002AudiAllroad QuattroRear LeftNon-Electronic Air Suspension Strut Assembly
2001AudiAllroad QuattroRear LeftNon-Electronic Air Suspension Strut Assembly
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
4Z75130314Z7513031A4Z75130324Z7513032A4Z7616051A4Z7616052A