Monroe
Gas-Magnum Shock Absorber

Monroe 34674 Shock Absorber - Rear

Brand Monroe 34674
Position Rear
S4
Compressed Bumper Stop No
Compressed Length 16.125
Dust Shield Yes
Dust Shield Material Metal
Extended Bumper Stop No
Extended Hydraulic Lockout No
Extended Length 27.375
Lower Mounting Code LS43
Lower Mounting Type Loop Bushing & Sleeve Mount - 14MM Sleeve ID X 1,9/16" Sleeve OAL
Parts Pack P01136
Travel Length 11.25
Upper Mounting Type Stem Mount - 2.3/8" Stem Length X 3/8"-16 Thread Pitch
Product line Gas-Magnum Shock Absorber
Fits Ford · 8 vehicles

Gas-Magnum design. Delivers firm control without a harsh ride.

High fluid capacity. Uses up to twice the fluid of standard 1-in. bore shocks.

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

Cross-references Four Seasons 58715, KYB 344616 and Rancho RS55251 for the same application. See all 5.

$58.75Free 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 $58.75
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Monroe Gas-Magnum Shock Absorber 34674

The Monroe Gas-Magnum Shock Absorber 34674 is built for midsize and full-size truck and van suspension setups that need firm damping without an overly harsh ride. It is a rear shock absorber for select Ford F-150, Ford F-150 Heritage, and Ford F-250 applications.

Key Features

  • Gas-Magnum shock absorber line for truck and van suspension use
  • Designed with up to twice the fluid capacity of standard 1-inch bore shocks
  • Helps the shock work more efficiently with less effort
  • Compressed length: 16.125 in.; extended length: 27.375 in.; travel length: 11.25 in.
  • Dust shield included; dust shield material: metal
  • Upper mount: stem mount with 2.3/8 in. stem length and 3/8 in.-16 thread pitch
  • Lower mount: loop bushing and sleeve mount with 14 mm sleeve ID and 1,9/16 in. sleeve OAL

Product Details

Monroe Gas-Magnum shocks are tuned for heavier-duty rear suspension control on trucks and vans, helping manage load movement and road input with a firmer response. Part number 34674 uses a stem upper mount and loop bushing lower mount, along with a metal dust shield for added protection in exposed underbody locations. This part cross-references KYB 344616 and Rancho RS55251 for the same application.

What It Helps Address

  • Excessive rear bounce after bumps or dips
  • Reduced control when carrying cargo or towing-related load transfer
  • Rear suspension instability on rough pavement
  • Worn shock performance that can increase body motion
  • Loss of damping consistency in heavier-duty truck use

Installation Notes

Fits 2004 Ford F-150 Heritage, rear. Fits 2000-2003 Ford F-150, rear. Fits 1997-1999 Ford F-250, rear. Confirm gross vehicle weight rating and rear suspension configuration before installation; this listing applies to 2004 Ford F-150 Heritage with 7,700 lb GVW, 2000-2003 Ford F-150 with 7,700 lb GVW, and 1997-1999 Ford F-250 with 8,500 lb GVW and under, without Automatic Rear Air Leveling System. Verify compressed and extended lengths against the original shock before service.

Quality Assurance

Monroe’s Gas-Magnum line is engineered for truck and van applications that need controlled damping and efficient fluid movement. Part number 34674 is listed for the rear position on the specified Ford applications and is supported by Monroe’s limited lifetime warranty noted in the fitment data.

This part fits 8 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypePositionNotes
2004FordF-150 HeritageXL4WDRearwith 7,700 (lb) Gross Vehicle Weight (GVW); Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
2003FordF-1504WDRearwith 7,700 (lb) Gross Vehicle Weight (GVW); Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
2002FordF-1504WDRearwith 7,700 (lb) Gross Vehicle Weight (GVW); Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
2001FordF-1504WDRearwith 7,700 (lb) Gross Vehicle Weight (GVW); Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
2000FordF-1504WDRearwith 7,700 (lb) Gross Vehicle Weight (GVW); Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
1999FordF-2504WDRearwith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; without Automatic Rear Air Leveling System; Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
1998FordF-2504WDRearwith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; without Automatic Rear Air Leveling System; Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
1997FordF-2504WDRearwith 8,500 (lb) Gross Vehicle Weight (GVW) & Under; without Automatic Rear Air Leveling System; Premium; Limited Lifetime Warranty; Gas-Magnum Shock Absorber
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 58715KYB — 344616Rancho — RS55251HD12140898RS5251