KYB Gas-a-just Monotube Rear Shock Absorber KYB554348 for Chevrolet Express and GMC Savana

The KYB Gas-a-just monotube shock absorber has additional performance advantages over the traditional twin-tube design: It can instantly, automatically adjust to your performance needs and never experiences fade due to aeration. The KYB Gas-a-just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness and control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.

• Electronic safety systems depend on the suspension, brakes and tires operating as the vehicle manufacturer intended. The KYB Gas-a-just helps keep Electronic Safety Systems performing as designed.

The KYB Gas-a-just monotube rear shock absorber is engineered to provide responsive handling, improved control, and consistent performance for qualifying Chevrolet Express and GMC Savana applications. Part number KYB554348 uses a monotube design with separate hydraulic and high-pressure nitrogen chambers to deliver dependable damping during everyday driving and added control when road or load conditions demand more suspension performance.

The air-free hydraulic piston and valve area helps maintain responsive suspension control, while the floating piston separates the hydraulic fluid from the high-pressure nitrogen gas. This design helps the shock absorber automatically adapt to changing driving conditions and resist performance fade caused by aeration. The result is more consistent damping, improved ride control, and enhanced vehicle stability compared with a conventional twin-tube design.

• Electronic safety systems depend on the suspension, brakes, and tires operating as the vehicle manufacturer intended. The KYB Gas-a-just helps support proper electronic safety system performance by maintaining controlled suspension movement.

This KYB shock absorber is designed for rear suspension applications on select 2010–2011 Chevrolet Express 2500 and GMC Savana 2500 models, with additional fitment coverage for Chevrolet Express 3500 vans from 2006–2011 where specified. Always verify the vehicle configuration and application before installation. The package includes one KYB Gas-a-just rear shock absorber.

Key Product Specifications and Technical Data

• Brand: KYB
• Part Number: KYB554348
• Product Type: Monotube gas-charged shock absorber
• Vehicle Position: Rear
• Suspension Design: Gas-a-just monotube construction
• Operating Medium: High-pressure nitrogen gas and hydraulic fluid
• Application Type: Automotive replacement suspension component
• Package Quantity: One shock absorber

What's Included

• One KYB Gas-a-just rear shock absorber, part number KYB554348

Features:

• Monotube Performance: Provides responsive damping and consistent suspension control through separate hydraulic and nitrogen chambers.
• Fade Resistance: Helps prevent performance loss caused by aeration during demanding driving conditions.
• Automatic Adjustment: Adapts damping performance to changing road conditions and suspension demands.
• Electronic Safety Support: Helps maintain controlled suspension operation so electronic safety systems can perform as intended.

Fitments:
2003 Chevrolet Express 2500 Base
2003 Chevrolet Express 2500 LS
2003 GMC Savana 2500 Base
2003 GMC Savana 2500 SLE
2004 Chevrolet Express 2500 Base
2004 Chevrolet Express 2500 LS
2004 GMC Savana 2500 Base
2004 GMC Savana 2500 SLE
2005 Chevrolet Express 2500 Base
2005 Chevrolet Express 2500 LS
2005 GMC Savana 2500 Base
2005 GMC Savana 2500 SLE
2006 Chevrolet Express 2500 Base
2006 Chevrolet Express 2500 LS
2006 Chevrolet Express 2500 LT
2006 Chevrolet Express 3500 Base
2006 Chevrolet Express 3500 LS
2006 Chevrolet Express 3500 LT
2006 GMC Savana 2500 Base
2006 GMC Savana 3500 Base
2006 GMC Savana 3500 LS
2006 GMC Savana 3500 LT
2007 Chevrolet Express 2500 Base
2007 Chevrolet Express 2500 LS
2007 Chevrolet Express 2500 LT
2007 Chevrolet Express 3500 Base
2007 Chevrolet Express 3500 LS
2007 Chevrolet Express 3500 LT
2007 GMC Savana 2500 Base
2007 GMC Savana 2500 LS
2007 GMC Savana 2500 LT
2007 GMC Savana 3500 Base
2007 GMC Savana 3500 LS
2007 GMC Savana 3500 LT
2008 Chevrolet Express 2500 Base
2008 Chevrolet Express 2500 LS
2008 Chevrolet Express 2500 LT
2008 Chevrolet Express 3500 Base
2008 Chevrolet Express 3500 LS
2008 Chevrolet Express 3500 LT
2008 GMC Savana 2500 Base
2008 GMC Savana 2500 LS
2008 GMC Savana 2500 LT
2008 GMC Savana 3500 Base
2008 GMC Savana 3500 LS
2008 GMC Savana 3500 LT
2009 Chevrolet Express 2500 Base
2009 Chevrolet Express 2500 LS
2009 Chevrolet Express 2500 LT
2009 Chevrolet Express 3500 Base
2009 Chevrolet Express 3500 LS
2009 Chevrolet Express 3500 LT
2009 GMC Savana 2500 Base
2009 GMC Savana 2500 LS
2009 GMC Savana 2500 LT
2009 GMC Savana 3500 Base
2009 GMC Savana 3500 LS
2009 GMC Savana 3500 LT
2010 Chevrolet Express 2500 Base
2010 Chevrolet Express 2500 LS
2010 Chevrolet Express 2500 LT
2010 Chevrolet Express 3500 Base
2010 Chevrolet Express 3500 LS
2010 Chevrolet Express 3500 LT
2010 GMC Savana 2500 Base
2010 GMC Savana 2500 LS
2010 GMC Savana 2500 LT
2010 GMC Savana 3500 Base
2010 GMC Savana 3500 LS
2010 GMC Savana 3500 LT
2011 Chevrolet Express 2500 Base
2011 Chevrolet Express 2500 LS
2011 Chevrolet Express 2500 LT
2011 Chevrolet Express 3500 Base
2011 Chevrolet Express 3500 LS
2011 Chevrolet Express 3500 LT
2011 GMC Savana 2500 Base
2011 GMC Savana 2500 LS
2011 GMC Savana 2500 LT
2011 GMC Savana 3500 Base
2011 GMC Savana 3500 LS
2011 GMC Savana 3500 LT
2012 Chevrolet Express 2500 Base
2012 Chevrolet Express 2500 LS
2012 Chevrolet Express 2500 LT
2012 Chevrolet Express 3500 Base
2012 Chevrolet Express 3500 LS
2012 Chevrolet Express 3500 LT
2012 GMC Savana 2500 Base
2012 GMC Savana 2500 LS
2012 GMC Savana 2500 LT
2012 GMC Savana 3500 Base
2012 GMC Savana 3500 LS
2012 GMC Savana 3500 LT
2013 Chevrolet Express 2500 Base
2013 Chevrolet Express 2500 LS
2013 Chevrolet Express 2500 LT
2013 Chevrolet Express 3500 Base
2013 Chevrolet Express 3500 LS
2013 Chevrolet Express 3500 LT
2013 GMC Savana 2500 Base
2013 GMC Savana 2500 LS
2013 GMC Savana 2500 LT
2013 GMC Savana 3500 Base
2013 GMC Savana 3500 LS
2013 GMC Savana 3500 LT
2014 Chevrolet Express 2500 Base
2014 Chevrolet Express 2500 LS
2014 Chevrolet Express 2500 LT
2014 Chevrolet Express 3500 Base
2014 Chevrolet Express 3500 LS
2014 Chevrolet Express 3500 LT
2014 GMC Savana 2500 Base
2014 GMC Savana 2500 LS
2014 GMC Savana 2500 LT
2014 GMC Savana 3500 Base
2014 GMC Savana 3500 LS
2014 GMC Savana 3500 LT
2015 Chevrolet Express 2500 Base
2015 Chevrolet Express 2500 LS
2015 Chevrolet Express 2500 LT
2015 Chevrolet Express 3500 Base
2015 Chevrolet Express 3500 LS
2015 Chevrolet Express 3500 LT
2015 GMC Savana 2500 Base
2015 GMC Savana 2500 LS
2015 GMC Savana 2500 LT
2015 GMC Savana 3500 Base
2015 GMC Savana 3500 LS
2015 GMC Savana 3500 LT
2016 Chevrolet Express 2500 Base
2016 Chevrolet Express 2500 LS
2016 Chevrolet Express 2500 LT
2016 Chevrolet Express 3500 Base
2016 GMC Savana 2500 Base
2016 GMC Savana 3500 Base
2017 Chevrolet Express 2500 Base
2017 Chevrolet Express 2500 LS
2017 Chevrolet Express 2500 LT
2017 Chevrolet Express 3500 Base
2017 Chrysler Pacifica Hybrid Platinum
2017 Chrysler Pacifica Hybrid Premium
2017 GMC Savana 2500 Base
2017 GMC Savana 2500 LS
2017 GMC Savana 2500 LT
2017 GMC Savana 3500 Base
2018 Chevrolet Express 2500 Base
2018 Chevrolet Express 2500 LS
2018 Chevrolet Express 2500 LT
2018 Chevrolet Express 3500 Base
2018 Chrysler Pacifica Hybrid Limited
2018 Chrysler Pacifica Hybrid Touring L
2018 Chrysler Pacifica Hybrid Touring Plus
2018 GMC Savana 2500 Base
2018 GMC Savana 2500 LS
2018 GMC Savana 2500 LT
2018 GMC Savana 3500 Base
2019 Chevrolet Express 2500 Base
2019 Chevrolet Express 2500 LS
2019 Chevrolet Express 2500 LT
2019 Chevrolet Express 3500 Base
2019 Chrysler Pacifica Hybrid Limited
2019 Chrysler Pacifica Hybrid Touring L
2019 Chrysler Pacifica Hybrid Touring Plus
2019 GMC Savana 2500 Base
2019 GMC Savana 3500 Base
2020 Chevrolet Express 2500 Base
2020 Chevrolet Express 3500 Base
2020 Chrysler Pacifica Hybrid Limited
2020 Chrysler Pacifica Hybrid Touring
2020 Chrysler Pacifica Hybrid Touring L
2020 GMC Savana 2500 Base
2020 GMC Savana 3500 Base
2021 Chevrolet Express 2500 Base
2021 Chevrolet Express 3500 Base
2021 Chrysler Pacifica Hybrid Limited
2021 Chrysler Pacifica Hybrid Pinnacle
2021 Chrysler Pacifica Hybrid Touring
2021 Chrysler Pacifica Hybrid Touring L
2021 GMC Savana 2500 Base
2021 GMC Savana 3500 Base
2022 Chevrolet Express 2500 Base
2022 Chevrolet Express 3500 Base
2022 Chrysler Pacifica Hybrid Limited
2022 Chrysler Pacifica Hybrid Pinnacle
2022 Chrysler Pacifica Hybrid Touring L
2022 GMC Savana 2500 Base
2022 GMC Savana 3500 Base
2023 Chevrolet Express 2500 Base
2023 Chevrolet Express 3500 Base
2023 Chrysler Pacifica Hybrid Limited
2023 Chrysler Pacifica Hybrid Pinnacle
2023 Chrysler Pacifica Hybrid Touring L
2023 GMC Savana 2500 Base
2023 GMC Savana 3500 Base
2024 Chevrolet Express 2500 Base
2024 Chevrolet Express 3500 Base
2024 Chrysler Pacifica Hybrid Pinnacle
2024 GMC Savana 2500 Base
2024 GMC Savana 3500 Base
2025 Chevrolet Express 2500 Base
2025 Chevrolet Express 3500 Base
2025 GMC Savana 2500 Base
2025 GMC Savana 3500 Base

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1