Monroe 33221 Suspension Shock Absorber - Rear

Monro-Matic Plus Rear Shock

The Monroe Monro-Matic Plus shock absorber 33221 is a rear suspension replacement for select Chrysler and Dodge applications. It combines nitrogen gas charge and Velocity Proportional Valving to deliver controlled damping with an economical service part design.

Key Features

• Nitrogen gas charged for consistent shock response.
• Velocity Proportional Valving adjusts damping through the stroke.
• Metal dust shield helps protect internal components.
• Stem mount upper design with 2-3/8 in. stem length and 3/8 in.-16 thread pitch.
• Includes compressed and extended bumper stops for added suspension protection.

Detailed Description

Monroe 33221 is built as a rear suspension shock absorber for vehicles that use a stem-mount upper attachment and the listed length specifications. The Monro-Matic Plus line focuses on practical ride control, using nitrogen gas charge and VPV technology to balance comfort and damping response. This part cross-references KYB 344660 and Focus Auto Parts 341570 for the same application. It is a direct fit for select Chrysler 300, Dodge Challenger, Dodge Charger, and Dodge Magnum rear applications with the specified suspension equipment.

What It Helps Address

• Excessive rear bounce after bumps.
• Reduced damping control from a worn shock absorber.
• Noisy or harsh rear suspension response.
• Loss of ride stability during everyday driving.

Installation Notes and Tips

Verify rear fitment against the vehicle’s suspension package before installation. This shock uses a stem-mount upper connection and specific compressed and extended lengths, so matching the original mounting style and dimensions is important. Confirm the application notes for performance suspension, self-leveling suspension, and police package exclusions where listed.

Quality Assurance

Monroe positions the Monro-Matic Plus line as an economical shock absorber series with nitrogen gas charge and Velocity Proportional Valving for controlled ride performance.