Monroe Shocks & Struts Suspension Shock Absorber and Coil Spring Assembly P/N:58638

Keep a hard-working truck level and controlled when the bed is loaded with the Monroe Load Adjusting Rear Suspension Shock Absorber and Coil Spring Assembly 58638, sold as a pack of 2. Each unit combines a rear shock absorber with a heavy-gauge, calibrated coil spring, making it a direct-fit replacement for the 2001-2003 and 2005-2006 Chevrolet Silverado 1500 HD, 2007 Chevrolet Silverado 1500 HD Classic, 1999-2004 Chevrolet Silverado 2500, 2001-2003 and 2005-2006 GMC Sierra 1500 HD, 2007 GMC Sierra 1500 HD Classic, and 1999-2004 GMC Sierra 2500. See the Buyer's Guide tab for engine-level fitment.

• Reduces sag under load: the heavy-gauge, calibrated coil spring helps reduce sag when loaded up to 1,200 lbs. (capacity limited by suspension, tires and transmission; see owner's manual) — ideal for occasionally hauling or towing varying loads.
• Exceptional handling: tuned specifically for each application, full-displaced valving automatically adjusts to road extremes to help provide ride consistency.
• Consistent ride: OE all-weather fluid contains special modifiers for extreme temperatures, and a PTFE-banded piston helps reduce friction between the piston and pressure tube.
• Longer service life: a self-lubricating fluid seal retains gas and reduces friction against the piston rod, while a heavy-duty nitrocarburized rod is built for long life. A nitrogen gas charge helps maintain tire-to-road contact by reducing aeration and shock fade.

Replacing both rear units together as a matched set is recommended for balanced ride and handling.

Interchange: SC00017 · 43181 · 5001394