Monroe Shocks & Struts 58638 rear shock absorber for the 1999-2004 Chevrolet Silverado 2500 and other vehicles damps rear suspension movement and includes a coil spring. It suits light trucks that tow or carry varying loads.
- Monroe Load Adjusting design with a heavy gauge calibrated spring that adjusts to changing road and weight conditions
- Coil spring reduces sag when loaded up to 1,200 lbs (capacity limited by suspension, tires and transmission; see owner's manual)
- Full-displaced valving tuned specifically for each application
- All-weather fluid with special modifiers for extreme temperatures; PTFE-banded piston reduces piston-to-tube friction
- Self-lubricating fluid seal retains gas; heavy-duty nitrocarburized rod
- Nitrogen gas-charge reduces aeration and shock fade
Quick facts
- Part: Monroe Shocks & Struts 58638 shock absorber
- Fits: 1999-2004 Chevrolet Silverado 2500 and other vehicles
- Position: Rear
- Condition: New
A worn rear shock absorber can show up as a bouncy ride after bumps, a rear end that wallows or sags under load, or uneven tire wear. Worn tires, loose mounts or a bad alignment can be behind similar complaints, so find the cause before buying. This listing is a pack of 2.
Fits
The 1999-2004 Chevrolet Silverado 2500, the 2007 Chevrolet Silverado 1500 HD Classic and the 2007 GMC Sierra 1500 HD Classic take this shock absorber, and so do other trucks. If your truck is not named here, open the "Vehicles it fits" section and look up your exact model and engine.
Specifications
Fit and size
- Position: Rear
- Pieces per listing: 2
- Compressed length: 16 in (406.4 mm)
- Extended length: 25.875 in (657.2 mm)
- Travel length: 9.875 in
- Upper and lower mounts: Loop Bushing and Sleeve Mount - 9/16 Sleeve ID X 1.5/8 Sleeve OAL
Build and materials
- Type: Shock absorber and coil spring assembly
- Damping type: Oil, nitrogen gas-charged
- Dust shield: Metal, included
- Rod: Nitrocarburized
- Condition: New
- Country of origin: China
In the box
Two shock absorber assemblies, each with a coil spring and a metal dust shield.
Interchange: SC00017 · 43181 · 5001394
This part cross-references / interchanges with the following part numbers:
SC00017, 43181, 5001394, 58638
Frequently Asked Questions
Does the Monroe 58638 shock absorber fit the 1999-2004 Chevrolet Silverado 2500?
Yes. Monroe 58638 fits the 1999-2004 Chevrolet Silverado 2500 and the 2007 Chevrolet Silverado 1500 HD Classic. For other trucks, open the "Vehicles it fits" section.
What do I get with the Monroe 58638 pack of 2?
Monroe 58638 comes as two shock absorber assemblies, each with a coil spring and a metal dust shield.
How much load can the coil spring on these Monroe Load Adjusting rear shocks handle?
The heavy gauge, calibrated coil spring reduces sag when loaded up to 1,200 lbs. Capacity is limited by the suspension, tires and transmission, so see the owner's manual.
How can I spot a worn rear shock absorber?
A knocking or clunking noise from the rear over bumps can point to a worn shock or its mounts. A shop can inspect the body and rod for leaks and the bushings for cracks.
Is this rear shock absorber gas-charged?
Yes. This shock absorber has a nitrogen gas-charge that reduces aeration and shock fade, and a self-lubricating fluid seal that retains the gas.
