Direct-fit OE upgrade rear shock for Chevrolet Express and GMC Savana full-size vans at stock height. Covers 2500, 3500, and 4500 series from 1996 through 2023. Cross pin upper / eyelet lower mount. Made in the USA.
The Bilstein 24-221948 B6 4600 Series Rear Shock Absorber is the companion rear shock to the 24-187435 front — together they form the complete stock-height Bilstein upgrade for the Chevrolet Express and GMC Savana full-size van platform. This rear shock covers the 2500, 3500, and 4500 series from 1996 through 2023, making it one of the most enduring application fits in the commercial van segment.
The rear suspension of a loaded Express or Savana takes particularly hard use: cargo weight, passenger loads, upfitted commercial equipment, and sustained fleet mileage all demand more from the rear shock than a factory replacement can provide long-term. The 4600 series, precisely valved for this platform, restores rear axle stability, reduces rear-end bounce and sway under load, and delivers the composed, controlled handling that makes these vans reliable fleet vehicles.
Cross pin upper / eyelet lower — bolt-on rear replacement at stock height for all Express/Savana 2500, 3500, and 4500 variants
Fade-free rear damping under commercial van and fleet loads — consistent performance under sustained use
Handles cargo van, passenger shuttle, and upfitted commercial rear axle loads with application-specific valving
Designed, engineered, and manufactured in the USA. Backed by Bilstein's limited lifetime warranty
Express/Savana 4500 Start Year: The 4500 series is supported from 2009 onward, not from 1996. The 2500 and 3500 series run from 1996. Verify your specific model designation before ordering. Sold Individually: One shock absorber per package. Order qty 2 for a complete rear axle replacement. Stock Height Only: The B6 4600 Series is for stock-height applications only.
In The Box (Qty: 1 Shock Absorber): • Bilstein 24-221948 Rear Shock Absorber • Blue Protective Boot • Black Rubber Bushings NOT Included: • Mounting Hardware • Second shock (sold individually — order qty 2 for a complete rear pair)
24-187435 — Front B6 4600 shock for 2003–2023 Chevrolet Express / GMC Savana 2500/3500/4500 (pairs with this rear shock) Replacing front and rear shocks together delivers the most balanced improvement in ride quality, stability, and overall van composure — particularly important for high-mileage fleet vehicles.
Bilstein Official Product Page Bilstein Technical Support: Website: www.bilstein.com Warranty: Limited Lifetime for original purchaser — B6 4600 series gas pressure shocks. Proof of purchase required. See full terms at Bilstein's website.
The 24-221948 fits the following vehicles at stock ride height. The 4500 series begins in 2009, while the 2500 and 3500 series run from 1996. Sold individually — order two for a complete rear replacement.
⚠️ Fitment cross-referenced across LM Performance, ShockWarehouse, Shock Surplus, and Desert Rat. The 4500 series begins in 2009. Pair with Bilstein 24-187435 front shock for a complete stock-height van suspension upgrade. Always verify your specific year and model before ordering.