Smooth out the ride and keep the rear tires planted with the Monroe OESpectrum Rear Suspension Shock Absorber, MPN 37156. This nitrogen gas-charged shock is designed to help restore a vehicle's original factory drivability, damping road inputs while filtering out impact-related noise, vibration, and harshness. It drops in as a direct-fit rear replacement for the 2005-2007 Buick Terraza, 2005-2009 Chevrolet Uplander, 1997-2005 Chevrolet Venture, 1997-2004 Oldsmobile Silhouette, 2001-2005 Pontiac Aztek, 1999-2009 Pontiac Montana, 1997-1999 Pontiac Trans Sport, and 2005-2007 Saturn Relay — see the Buyer's Guide tab for engine-level details.
- Exceptional handling: Full displaced valving is tuned to the vehicle and adjusts to road extremes, while the larger bore provides more efficient damping control for a consistent, smooth ride.
- Control and durability: A PTFE-banded piston provides consistent sealing between the piston and pressure tube for better control and increased durability.
- Reduced NVH: The Twin Technology Active Control System delivers control under most driving conditions while isolating impact-related noise, vibration, and harshness.
- Nitrogen gas-charge: Helps maintain tire-to-road contact by reducing aeration and shock fade, and OE all-weather fluid resists breakdown in temperature extremes.
Backed by Monroe's Limited Lifetime Warranty and Feel the Difference Guarantee. Sold individually; replace both rear shocks together as a matched pair for balanced handling.
Interchange: 530295 · 540311 · TS3333242B · TS3431832B · 342543 · G63776 · G63869 · 344338 · GM123 · 210244 · SH81924 · 10245075 · 171376 · 12130250 · 12140152 · 7837156 · 251130
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What position does this shock fit?
The Monroe OESpectrum 37156 is a rear suspension shock absorber for the listed applications. Confirm your vehicle in the Buyer's Guide tab before ordering.
Which vehicles does the 37156 fit?
It fits the 2005-2007 Buick Terraza, 2005-2009 Chevrolet Uplander, 1997-2005 Chevrolet Venture, 1997-2004 Oldsmobile Silhouette, 2001-2005 Pontiac Aztek, 1999-2009 Pontiac Montana, 1997-1999 Pontiac Trans Sport, and 2005-2007 Saturn Relay.
Is this a gas-charged shock?
Yes. It uses a nitrogen gas-charge that helps maintain tire-to-road contact by reducing aeration and shock fade for improved ride and handling.
Should I replace both rear shocks at once?
It's sold individually, but replacing both rear shocks together as a matched pair is recommended for balanced, even handling.
What are signs my rear shocks may need replacing?
Excessive bouncing, a rough or unsettled ride, nose dive or sway, uneven tire wear, or fluid leaking from the shock body can indicate worn shocks. Diagnose the cause before replacing.
Write a Review