Bilstein B8 5100 Series Rear Shock Absorber — 33-187228
For 5.9L & 6.7L Cummins Ram 2500/3500 (3–5" lift)

Upgrade the rear suspension on your lifted Cummins with a shock built for real truck work. The Bilstein B8 5100 33-187228 is a high-pressure monotube shock made for 4WD Ram 2500 (1994–2013) and Ram 3500 (1994–2012) with 5.9L or 6.7L Cummins engines and a 3–5" rear lift. It delivers firm control when you’re loaded or towing, stays composed on the highway, and still handles occasional off-road use without a harsh everyday ride.

Why the B8 5100 works on a lifted Cummins

Lifted heavy-duty Rams put extra demand on rear shocks—larger tires, higher stance, and big payload. Bilstein’s 46mm monotube design and patented digressive valving react immediately to changing road inputs so the truck stays planted instead of bouncing or wallowing. High-pressure nitrogen charge and a large piston keep damping consistent as heat builds, which matters on long hauls and summer interstates.

Key benefits:

• Application-specific tuning for lifted 3/4- and 1-ton Rams
• Strong damping for towing, hauling, and daily driving
• Fade-resistant monotube construction
• Zinc-plated body for corrosion resistance
• Direct-fit eye-to-eye mounts for straightforward install
• Limited lifetime warranty

Technical specifications

Part number: 33-187228 Series: Bilstein B8 5100 Position: Rear Lift range: 3–5" rear (manufacturer suggestion) Quantity: Sold individually (2 required per vehicle) Design: 46mm monotube, smooth body (non-coilover) Valving: Digressive, velocity-sensitive, non-adjustable Reservoir: None Finish: Zinc plated Collapsed length: 20.37" (517.5 mm) Extended length: 31.93" (811 mm) Travel: 11.56" Upper / lower mount: Eye 14.1 mm Shaft: 14 mm Boot included: No Warranty: Limited lifetime

Old / interchange numbers include F4-BE5-F256-H0, F4-BE5-F256-H1, and BE5-F256.

Fitment

Primary application for this listing:

• 1994–2013 Dodge/Ram 2500 4WD — 5.9L & 6.7L Cummins, rear, 3–5" lift
• 1994–2012 Dodge/Ram 3500 4WD — 5.9L & 6.7L Cummins, rear, 3–5" lift

Also listed by Bilstein for:

• 2006–2008 Ram 1500 4WD Mega Cab (rear, 3–5" lift)
• 2003–2009 Hummer H2 (rear)

Fitment note: 3–5" is the manufacturer’s suggested rear lift range. Aftermarket kits vary. Measure your current shock eye-to-eye (center of eyelet to center of eyelet) and compare to the 20.37" collapsed / 31.93" extended lengths before ordering. 4WD applications only for the Ram trucks listed.

Install & buying notes

Shocks are sold individually. Order two for a complete rear pair. Hardware is designed as a direct-fit replacement for the listed applications. No boot is included. Always confirm lift height and mounting style against your existing shocks or kit specs.

Ready for a Cummins that tows, works, and still rides well on the street—this is the rear B8 5100 most shops and owners spec for a 3–5" lifted 2nd- and 3rd-gen Ram.