This Bilstein B6 4600 front damper is a single-tube, gas-pressure monotube shock built for a 1990 Chevrolet C1500 454 SS. The manufacturer describes the B6 4600 as a direct-fit damper meant to work with your factory spring, and this front unit uses a 46mm body. Inside, a high-pressure nitrogen charge separates the oil from the gas, which the manufacturer says helps prevent cavitation and fade during long drives or repeated hard impacts. Compared with a budget twin-tube replacement, that monotube layout is the reason to spend more: owners on user forums often describe steadier control on rough pavement and washboard dirt roads. This is a stock-height replacement, not a lift-kit damper, so it suits a daily driver, towing duty, or a light-off-road C1500 that keeps its original ride height. Search terms this part matches include 1990 C1500 454 SS front monotube shock, B6 4600 front shock replacement, and stock height gas-pressure shock upgrade.
Fitment for this part number is not consistent across sources, so confirm it against your VIN before ordering. The B6 4600 line is listed for several 1988–1999 C1500 and C2500 applications, and the manufacturer's own documentation is the reliable check. Installation is a bolt-on job for a home mechanic with a jack, stands, a torque wrench, and basic hand tools, but the manufacturer's general mounting instructions recommend a chassis hoist and a qualified suspension specialist. Lower the truck so its weight sits on the suspension before final torque, and check caster, camber, and headlight aim afterward. Owners on user forums report that the printed washer and bushing diagrams are confusing, so review the stem hardware order before assembly and contact Bilstein technical support if the sequence is unclear.
Application data for this part number differs between sources, so the manufacturer should be the final check. Provide your VIN and the manufacturer can confirm whether 24-016971 is the correct front position for your truck.
The manufacturer positions the B6 4600 for stock-height vehicles and says it is tuned to work with the factory spring. If the truck has a lift, contact the manufacturer about suitability before ordering.
Per the manufacturer's general mounting instructions, the job should be done on a chassis hoist, and the vehicle should be lowered so its full weight is on the suspension before the fasteners are fully tightened. Removing the inner fender wells is noted by the manufacturer as a way to simplify access. Expect a seized top nut on an original truck, so penetrating oil and a helper are useful. Owners on user forums report the boot and stem hardware must be seated in the correct order, and the lower mount fasteners should be torqued to the vehicle service manual specification rather than a generic number. Confirm the included hardware matches the diagram before you start, because owners report that kits can differ.
