Monroe
OESpectrum Light Truck Shock Absorber

Monroe 37243 Shock Absorber - Rear

Brand Monroe 37243
Position Rear
L1
S4
Compressed Bumper Stop No
Compressed Length 13
Dust Shield Yes
Dust Shield Material Metal
Extended Bumper Stop No
Extended Hydraulic Lockout No
Extended Length 21.5
Lower Mounting Type Loop Bushing Mount - 5/8" Bushing ID X 1.5/16" Bushing OAL
Parts Pack P01137
Travel Length 8.5
Upper Mounting Type Stem Mount - 2.3/8" Stem Length X 3/8"-16 Thread Pitch
Product line OESpectrum Light Truck Shock Absorber
Fits Toyota · 6 vehicles

Factory-style drivability. Restores original handling precision and control.

Noise filtering. Helps reduce vibration and harshness for a quieter ride.

Dust shield included. Metal shield helps protect the shock absorber.

Cross-references KYB 343149, Monroe Shocks & Struts 172331 and 254080 for the same application. See all 6.

$48.92Free 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
Shock Absorbers are typically replaced in pairs, axle by axle.
Order total $48.92
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Monroe OESpectrum Rear Shock for Toyota Sienna

Monroe OESpectrum Light Truck Shock Absorber 37243 is built for rear suspension service on 1998-2003 Toyota Sienna models with stock components. It is engineered to restore factory-style drivability while improving handling precision and reducing noise, vibration, and harshness.

Key Features

  • Rear shock absorber for 1998-2003 Toyota Sienna
  • Monroe OESpectrum Light Truck Shock Absorber line for light truck and van applications
  • Compressed length: 13 in.; extended length: 21.5 in.; travel length: 8.5 in.
  • Metal dust shield included for added protection
  • Upper mount: stem mount, 2.3/8 in. stem length x 3/8 in.-16 thread pitch
  • Lower mount: loop bushing mount with 5/8 in. bushing ID x 1.5/16 in. bushing OAL

Product Details

The Monroe OESpectrum line is focused on OE-style ride control for drivers who want predictable suspension response without sacrificing comfort. On this Monroe shock absorber 37243, the valving and construction are aimed at maintaining original factory drivability while filtering road harshness, making it a practical choice for Toyota Sienna rear suspension replacement work. This part cross-references Monroe Shocks & Struts 172331 for the same application.

Common Issues This Part Can Address

  • Excessive rear-end bounce over bumps
  • Reduced stability during braking or lane changes
  • Harsh ride quality from worn rear shocks
  • Noise and vibration from aging suspension components
  • Uneven rear suspension control on higher-mileage Toyota Sienna vehicles

Installation Notes and Tips

Verify rear shock mounting style, compressed length, and extended length before installation. This Monroe 37243 uses a stem upper mount and loop bushing lower mount, so matching the existing hardware layout on the vehicle is important. Confirm rear fitment for 1998-2003 Toyota Sienna models with stock components before ordering.

Quality Assurance

Monroe designs the OESpectrum Light Truck Shock Absorber line to deliver OE-style ride control and consistent handling response for light truck and van applications. Part number 37243 is built to support factory-like drivability on the rear of compatible Toyota Sienna models.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2003ToyotaSiennaRearEnhances performance for vehicles with stock components.; OESpectrum Light Truck Shock Absorber
2002ToyotaSiennaRearEnhances performance for vehicles with stock components.; OESpectrum Light Truck Shock Absorber
2001ToyotaSiennaRearEnhances performance for vehicles with stock components.; OESpectrum Light Truck Shock Absorber
2000ToyotaSiennaRearEnhances performance for vehicles with stock components.; OESpectrum Light Truck Shock Absorber
1999ToyotaSiennaRearEnhances performance for vehicles with stock components.; OESpectrum Light Truck Shock Absorber
1998ToyotaSiennaRearEnhances performance for vehicles with stock components.; OESpectrum Light Truck Shock Absorber
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
KYB — 343149Monroe Shocks & Struts — 17233125408034460112120098G63610