The Bilstein 24-143806 is a rear shock from the B6 4600 family, built on the manufacturer's 46mm nitrogen-infused monotube body, where a floating piston separates the gas and oil. The manufacturer says the B6 4600 needs no spring change and can use the original OE spring, so you can upgrade damping without touching the springs. Bilstein's monotube layout is meant to resist the fade that builds up under repeated hard use, and its digressive valving adjusts to changing road surfaces. Owners on user forums describe a firmer, more controlled rear end over bumps and in crosswinds, though some find the ride firmer than stock.
Application data for this part number is not consistent across sources, so match your model year, 4WD or RWD drivetrain, and factory suspension package against the manufacturer's fitment guide before ordering. For a Tahoe that tows or sees rough dirt roads, the manufacturer notes that the high gas pressure supports a longer service life. Trucks with upgraded factory ride systems may need different springs or dampers, so confirm before you buy. Search terms that match this part include "Bilstein B6 4600 rear 24-143806," "46mm monotube rear shock Tahoe," and "2000 Tahoe LS rear gas shock upgrade."
The manufacturer states that no spring change is required and that the original OE spring can be used with the B6 4600.
The manufacturer's general installation guidance says that when replacing other brands, BILSTEIN shock absorbers should always be installed as a set. Pairing both rear shocks is the safer approach.
Owners on user forums report that the Bilstein name should be right side up when installed, because the valving is designed to work in one direction. Forum opinions on boot orientation vary, so follow the name orientation first.
Owners on user forums generally describe rear shock swaps on Tahoe-type trucks as easier than front, with the main difficulty being access to the upper mount, which requires loosening two bolts at the top of the shock. Common tools include a floor jack, jack stands, a socket set, penetrating oil, and locking pliers, since upper nuts can have a metal plate that spins. Forum members also recommend soaking the fasteners in penetrating oil the day before. The manufacturer's general installation instructions for its performance shocks call for special tools and a chassis hoist, and they recommend lowering the vehicle to full weight before final tightening of the fasteners, so weigh that guidance against the DIY experience.
