The Bilstein B6 4600 rear shock (part 24-029643) is a 46mm monotube, gas-pressure damper built as a bolt-on upgrade for stock-height Jeep Grand Cherokee rear axles. The manufacturer positions the B6 as firmer and more precise than factory dampers while keeping the original coil springs, so you get better control at the factory ride height without lowering the vehicle. The single-tube layout uses a larger working piston, and the yellow body with blue straight boot matches the stock look. Buyers comparing it with budget replacement dampers should note that this is a damper tuned to the Grand Cherokee's stock spring rate, not a generic shock, and the manufacturer backs it with a limited lifetime warranty. Search terms: Bilstein B6 4600 Grand Cherokee WJ rear shock, 24-029643 stock height monotube, gas-charged rear shock 46mm.
Fitment is the first thing to verify. Catalog data for this shock is not consistent: some listings show a broad 1999 to 2004 Grand Cherokee WJ application that includes the 2002 Sport trim, while others describe it for models without factory leveling control. Confirm your VIN and whether your rear suspension has leveling control with the manufacturer before ordering. Because this is a stock-height damper, it is not intended for lifted or lowered setups. For installation, the manufacturer's general guidance says Bilstein shocks should be fitted by a qualified suspension specialist using a chassis hoist, and that all mounting fasteners must be fully tightened before the suspension is loaded. Owners on user forums describe the rear swap as manageable at home with the right tools, but the manufacturer recommends professional installation.
No. The manufacturer designs the B6 to work with the vehicle's original coil springs, so no spring change is required to get the performance upgrade.
The manufacturer says the Bilstein label on the shock body should read in the correct orientation, so the shock may need to be flipped if the sticker was installed upside down. Check the boot position as well during installation.
Difficulty is moderate and best suited to a driver with a hoist or jack stands and a full socket set. The manufacturer's general instructions call for a chassis hoist, a securely attached vehicle, and full torque on all mounting fasteners before the suspension takes load. Plan on removing the rear shock from the vehicle service manual procedure, fitting the new shock with its supplied hardware, and confirming that the boot sits properly on the stem. Common gotchas include a shock that is installed with the label upside down and fasteners that are left under-tightened. After any shock change, the manufacturer recommends checking alignment and brake and ABS behavior to vehicle specifications.
