HD Comfort-valved rear monotube shock for Ford E-150, E-250, E-350, and E-450 vans and motorhomes. Stock-height direct fit using OEM mounting. Sold individually. Limited lifetime warranty.
The Bilstein 33-176840 B6 4600 Series Rear Shock Absorber is engineered specifically for Ford E-Series vans and motorhomes — the most capable and least expensive upgrade available to extend your vehicle's suspension service life. Tuned with Bilstein's HD Comfort valving, it's purpose-built for the demands of daily cargo hauling, frequent towing, passenger transport, and Class C motorhome operation.
Unlike generic heavy-duty shocks with stiff, punishing valving, the 4600 Series is tuned to your specific application — delivering superior control and ride quality simultaneously. Bilstein's upside-down monotube design with high-pressure nitrogen gas ensures consistent, fade-free performance whether you're loading a work van, towing a trailer, or cruising the highway with a full coach load.
Tuned for RV and van applications — superior ride quality without sacrificing load control or towing stability
Uses OEM springs and mounting hardware — bolt-on installation with no modifications for stock-height E-Series
Bilstein's inverted monotube design provides consistent fade-free damping and cooler operation under sustained load
Increased power reserves and extended service life under frequent towing, trailer pulling, and heavy-load operation
Stock Height Only: The 4600 Series is designed for stock-height Ford E-Series applications using OEM springs and mounting hardware. It is not intended for lifted configurations. Sold Individually: One shock absorber per package. Two are required for a complete rear axle replacement. HD Comfort vs. HD Standard Valving: The 33-176840 uses HD Comfort valving, optimized for RV and passenger van ride quality. For heavier commercial/cargo applications that prioritize firmer control, see Bilstein 33-176857 (HD Standard valving). Verify your exact year, model, and body configuration (Club Wagon, Econoline, Super Duty, etc.) before ordering. See the fitment table below.
In The Box (Qty: 1 Shock Absorber): • Bilstein 33-176840 Rear Shock Absorber • OE-Spec Mounting Hardware NOT Included: • Second shock (sold individually — order qty 2 for a complete rear pair) • Protective boot
33-176857 — Rear, HD Standard valving (firmer; for heavy commercial/cargo use) 33-187563 — Front shock for 1999–2023 E-350 Super Duty Match front and rear shocks for balanced handling and ride performance. Confirm fitment for your specific year and model before ordering.
Bilstein Official Product Page Bilstein Technical Support: Website: www.bilstein.com Warranty: Limited Lifetime for original purchaser — B6 4600 series gas pressure shocks. See full terms at Bilstein's website.
The 33-176840 fits the following Ford E-Series vehicles at stock ride height using OEM springs and mounting hardware. Sold individually — order two for a complete rear replacement. Always verify your exact model and body style before ordering.
⚠️ Fitment data sourced from Bilstein's authorized dealer network and cross-referenced against multiple sources. Body style, trim, and factory options can affect fitment — always verify your specific configuration before ordering.
If your E-Series serves as a Class C motorhome base, passenger van, or RV coach, the 33-176840 HD Comfort valving delivers the best balance of ride quality and load control. For dedicated cargo haulers or fleet work vans where a firmer ride is acceptable, the 33-176857 HD Standard is the better choice.