Buy Jounce Bumper, Rear (52125396AB)

The Jounce Bumper, Rear (52125396AB) is an essential suspension hcomponent designed to

protect the rear suspension system from excessive compression and impact. Commonly

referred to as a bump stop, this part is used in vehicles such as the Jeep Liberty (2008–2012,

KK) and Dodge Nitro (2007–2011). Manufactured by Mopar as a genuine OEM component, it

is engineered to meet factory specifications for durability, fitment, and performance

Positioned within the rear suspension system—typically above or near the axle—the jounce bumper serves as a cushioning device that limits suspension travel. When the vehicle encounters large bumps, heavy loads, or uneven terrain, the suspension compresses. The 52125396AB jounce bumper absorbs the final portion of this compression, preventing metal-to-metal contact between suspension components. This helps protect the shocks, springs, and frame from damage.

Constructed from high-density rubber or elastomer materials, the jounce bumper is designed to withstand repeated impacts and harsh environmental conditions. Its resilient structure allows it to compress under pressure and return to its original shape, providing consistent performance over time. This flexibility is crucial in maintaining ride comfort and reducing harsh jolts that could otherwise be transmitted into the vehicle cabin.

In addition to protecting suspension components

In addition to protecting suspension components, the rear jounce bumper also plays a role in improving overall ride quality and vehicle stability.hBy controlling the limits of suspension travel, it helps maintain proper alignment and handling characteristics, particularly when driving on rough roads or carrying heavy loads. Without a functioning jounce bumper, the suspension could bottom out, leading to uncomfortable impacts and potential mechanical damage.

Part number 52125396AB replaces the earlier version 52125396AA, incorporating design improvements for enhanced reliability and longevity. It is typically sold individually, though most vehicles require two units—one for each side of the rear suspension. (Mopar Parts Giant)

Over time, jounce bumpers can wear out, crack, or deteriorate due to constant stress, exposure to dirt, moisture, and temperature changes. Common signs of a worn bumper include harsh bottoming-out sensations, unusual noises, or visible damage to the component.

Installation of the 52125396AB is generally straightforward but may require lifting the vehicle and accessing the suspension area. Proper installation ensures optimal performance and long-term protection of the suspension system.

Overall, the Jounce Bumper, Rear (52125396AB) is a small yet vital component that safeguards the suspension, enhances ride comfort, and contributes to the durability of compatible Jeep and Dodge vehicles.