PRT Performance Ride
PRT Shock Absorber

PRT Performance Ride 173858 Shock Absorber - Rear

Brand PRT Performance Ride 173858
Position Rear
Adjustable No
Body Diameter 1.77
Boot Included No
Coil Over Springs Included No
Compressed Length 11.22
Dust Shield Yes
Dust Shield Material Metal
Extended Length 16.85
Gas Charged Yes
Lower Mount Type Loop
Shock Absorber Body End Measuring Point Center of the Loop
Shock Absorber Rod End Measuring Point Center of the Loop
Shock Stroke 5.63
Travel Length 5.63
Upper Mount Type Loop
Product line PRT Shock Absorber
Fits Acura · 4 vehicles

Gas charged. Delivers consistent damping response for smoother suspension control.

Metal dust shield. Helps protect the shock from debris and road grime.

Loop mounts. Uses loop ends for a straightforward suspension shock replacement.

$35.83Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $35.83
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Rear Shock Absorber for Acura MDX

PRT Performance Ride 173858 is a rear suspension shock absorber for 2003-2006 Acura MDX applications. It is built with a gas-charged design, a metal dust shield, and loop-to-loop mounting points to support controlled rear suspension movement on the MDX.

The PRT Shock Absorber line focuses on direct-fit suspension replacement parts for everyday drivability and consistent damping response. Part number 173858 follows the original mounting style and dimensions needed for rear shock service on the Acura MDX.

Key Features

  • Fits 2003-2006 Acura MDX, rear
  • PRT Performance Ride part number 173858
  • Gas charged construction
  • Metal dust shield included
  • Loop upper and lower mounts
  • Compressed length: 11.22 in.
  • Extended length: 16.85 in.
  • Shock stroke / travel length: 5.63 in.
  • Body diameter: 1.77 in.
  • Boot not included
  • Coil over springs not included
  • Non-adjustable design

Detailed Description

PRT Performance Ride 173858 is a rear suspension shock absorber engineered for the 2003-2006 Acura MDX. With center-of-the-loop measuring points at both ends, loop upper and lower mounts, and a 5.63-inch stroke, this shock matches the rear suspension service needs of the MDX while maintaining the correct installed length range. The gas-charged design supports stable damping response, and the metal dust shield adds protection for the rod area during normal road use. If you are replacing a worn rear shock absorber on an Acura MDX, part number 173858 provides a direct replacement format for the specified rear position.

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

Common Problems This Part Addresses

  • Rear suspension bounce or excessive rebound on Acura MDX models
  • Uneven ride control from a worn rear shock absorber
  • Noisy rear suspension movement caused by degraded damping
  • Reduced stability over bumps and rough pavement
  • Visible wear at the rear shock mounting points

Installation Notes and Tips

Verify rear fitment before installation: Fits 2003-2006 Acura MDX, rear. Confirm the loop-to-loop mounting style, compressed length, and extended length against the removed shock absorber before assembly. Inspect related rear suspension components, including mounts and bushings, and replace any worn parts as needed during service. Part number 173858 does not include a boot or coil over spring.

Quality Assurance

PRT Performance Ride suspension components are built for direct replacement use in specified vehicle applications. This rear shock absorber is gas charged and uses a metal dust shield for added protection in service.

This part fits 4 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2006AcuraMDX3.5LV6RearPRT Shock Absorber
2005AcuraMDX3.5LV6RearPRT Shock Absorber
2004AcuraMDX3.5LV6RearPRT Shock Absorber
2003AcuraMDX3.5LV6RearPRT Shock Absorber