Luk GDK325B-MK Axle Differential Bearing and Seal Kit - Rear

Name: Luk GDK325B-MK Axle Differential Bearing and Seal Kit - Rear
Brand: Luk
SKU: BBZH-GDK325B-MK
Price: 304.01 USD
Availability: InStock

Rear

⚙️ 211 vehicles fit this part

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✅OE Direct Replacement — Bolt-on fit, no modifications needed

🚗Fitment: Chevrolet and GMC, Avalanche 2500, C2500, C3500, Express 2500, Express 3500, K2500, K3500, P30, P3500, Savana 2500, Savana 3500, Sierra 2500, Sierra 2500 HD, Sierra 3500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500 HD, Suburban 2500, Suburban 3500 HD, and Yukon XL 2500

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Not what you need? Click here for all Axle Differential Bearing and Seal Kit options

LuK Differential Bearing Kit for Rear Axles

The LuK GDK325B-MK is an axle differential bearing and seal kit for rear differential service on a wide range of GM trucks and vans. It includes OE-quality bearings selected for the specific transmission or differential application, giving technicians the parts needed for a professional repair.

Axle differential bearing and seal kit for rear service
OE-quality components selected for the application
Built for professional transmission and differential repair work
Direct service solution for GM rear 10.5" applications
Part number: GDK325B-MK

Application Coverage

Compatible with rear 10.5" applications on Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, and GMC Savana 3500 from 1998-2020. It also fits 2021-2023 Chevrolet Express 2500 and Express 3500, plus 2021-2023 GMC Savana 2500 and Savana 3500 as a Master Differential Kit. Additional coverage includes Chevrolet Silverado 2500 HD, Silverado 3500 HD, Suburban 2500, Suburban 3500 HD, Avalanche 2500, C2500, C3500, K2500, K3500, P30, and GMC Sierra 2500 HD, Sierra 3500 HD, Sierra 2500, Sierra 3500, Yukon XL 2500, C2500, C3500, K2500, K3500, and P3500 rear applications. This part cross-references SKF SDK325-BMK for the same application.

What It Helps Repair

Rear differential bearing noise
Worn or damaged differential bearings
Seal-related fluid leakage during differential service
Transmission or driveline repair jobs requiring bearing replacement
Service work on GM 10.5" rear axle assemblies

Installation Notes

Verify axle size, rear position, and model-year coverage before installation. This kit is intended for professional differential service, so bearing preload, gear setup, and seal installation should be checked during assembly. Confirm the vehicle application against the exact rear axle configuration before ordering.

Quality Assurance

LuK selects OE-quality components for each specific transmission or differential application to support a professional repair result. Part number GDK325B-MK is built for service use on the listed GM rear axle applications.

This part fits 211 vehicles. Search below:

Year	Make	Model	Position	Notes
2023	Chevrolet	Express 2500	Rear	Master Differential Kit
2023	Chevrolet	Express 3500	Rear	Master Differential Kit
2023	GMC	Savana 2500	Rear	Master Differential Kit
2023	GMC	Savana 3500	Rear	Master Differential Kit
2022	Chevrolet	Express 2500	Rear	Master Differential Kit
2022	Chevrolet	Express 3500	Rear	Master Differential Kit
2022	GMC	Savana 2500	Rear	Master Differential Kit
2022	GMC	Savana 3500	Rear	Master Differential Kit
2021	Chevrolet	Express 2500	Rear	Master Differential Kit
2021	Chevrolet	Express 3500	Rear	Master Differential Kit
2021	GMC	Savana 2500	Rear	Master Differential Kit
2021	GMC	Savana 3500	Rear	Master Differential Kit
2020	Chevrolet	Express 2500	Rear	10.5"
2020	Chevrolet	Express 3500	Rear	10.5"
2020	GMC	Savana 2500	Rear	10.5"
2020	GMC	Savana 3500	Rear	10.5"
2019	Chevrolet	Express 2500	Rear	10.5"
2019	Chevrolet	Express 3500	Rear	10.5"
2019	Chevrolet	Suburban 3500 HD	Rear	10.5"
2019	GMC	Savana 2500	Rear	10.5"
2019	GMC	Savana 3500	Rear	10.5"
2018	Chevrolet	Express 2500	Rear	10.5"
2018	Chevrolet	Express 3500	Rear	10.5"
2018	GMC	Savana 2500	Rear	10.5"
2018	GMC	Savana 3500	Rear	10.5"
2017	Chevrolet	Express 2500	Rear	10.5"
2017	Chevrolet	Express 3500	Rear	10.5"
2017	Chevrolet	Silverado 2500 HD	Rear	10.5"
2017	Chevrolet	Silverado 3500 HD	Rear	10.5"
2017	Chevrolet	Suburban 3500 HD	Rear	10.5"
2017	GMC	Savana 2500	Rear	10.5"
2017	GMC	Savana 3500	Rear	10.5"
2017	GMC	Sierra 2500 HD	Rear	10.5"
2017	GMC	Sierra 3500 HD	Rear	10.5"
2016	Chevrolet	Express 2500	Rear	10.5"
2016	Chevrolet	Express 3500	Rear	10.5"
2016	Chevrolet	Silverado 2500 HD	Rear	10.5"
2016	Chevrolet	Silverado 3500 HD	Rear	10.5"
2016	Chevrolet	Suburban 3500 HD	Rear	10.5"
2016	GMC	Savana 2500	Rear	10.5"
2016	GMC	Savana 3500	Rear	10.5"
2016	GMC	Sierra 2500 HD	Rear	10.5"
2015	Chevrolet	Express 2500	Rear	10.5"
2015	Chevrolet	Express 3500	Rear	10.5"
2015	Chevrolet	Silverado 2500 HD	Rear	10.5"
2015	Chevrolet	Silverado 3500 HD	Rear	10.5"
2015	GMC	Savana 2500	Rear	10.5"
2015	GMC	Savana 3500	Rear	10.5"
2015	GMC	Sierra 2500 HD	Rear	10.5"
2015	GMC	Sierra 3500 HD	Rear	10.5"
2014	Chevrolet	Express 2500	Rear	10.5"
2014	Chevrolet	Express 3500	Rear	10.5"
2014	Chevrolet	Silverado 2500 HD	Rear	10.5"
2014	Chevrolet	Silverado 3500 HD	Rear	10.5"
2014	GMC	Savana 2500	Rear	10.5"
2014	GMC	Savana 3500	Rear	10.5"
2014	GMC	Sierra 2500 HD	Rear	10.5"
2014	GMC	Sierra 3500 HD	Rear	10.5"
2013	Chevrolet	Express 2500	Rear	10.5"
2013	Chevrolet	Express 3500	Rear	10.5"
2013	Chevrolet	Silverado 2500 HD	Rear	10.5"
2013	Chevrolet	Silverado 3500 HD	Rear	10.5"
2013	Chevrolet	Suburban 2500	Rear	10.5"
2013	GMC	Savana 2500	Rear	10.5"
2013	GMC	Savana 3500	Rear	10.5"
2013	GMC	Sierra 2500 HD	Rear	10.5"
2013	GMC	Sierra 3500 HD	Rear	10.5"
2013	GMC	Yukon XL 2500	Rear	10.5"
2012	Chevrolet	Express 2500	Rear	10.5"
2012	Chevrolet	Express 3500	Rear	10.5"
2012	Chevrolet	Silverado 2500 HD	Rear	10.5"
2012	Chevrolet	Silverado 3500 HD	Rear	10.5"
2012	Chevrolet	Suburban 2500	Rear	10.5"
2012	GMC	Savana 2500	Rear	10.5"
2012	GMC	Savana 3500	Rear	10.5"
2012	GMC	Sierra 2500 HD	Rear	10.5"
2012	GMC	Sierra 3500 HD	Rear	10.5"
2012	GMC	Yukon XL 2500	Rear	10.5"
2011	Chevrolet	Express 2500	Rear	10.5"
2011	Chevrolet	Express 3500	Rear	10.5"
2011	Chevrolet	Silverado 2500 HD	Rear	10.5"
2011	Chevrolet	Silverado 3500 HD	Rear	10.5"
2011	Chevrolet	Suburban 2500	Rear	10.5"
2011	GMC	Savana 2500	Rear	10.5"
2011	GMC	Savana 3500	Rear	10.5"
2011	GMC	Sierra 2500 HD	Rear	10.5"
2011	GMC	Sierra 3500 HD	Rear	10.5"
2011	GMC	Yukon XL 2500	Rear	10.5"
2010	Chevrolet	Express 2500	Rear	10.5"
2010	Chevrolet	Express 3500	Rear	10.5"
2010	Chevrolet	Silverado 2500 HD	Rear	10.5"
2010	Chevrolet	Suburban 2500	Rear	10.5"
2010	GMC	Savana 2500	Rear	10.5"
2010	GMC	Savana 3500	Rear	10.5"
2010	GMC	Sierra 2500 HD	Rear	10.5"
2010	GMC	Yukon XL 2500	Rear	10.5"
2009	Chevrolet	Express 2500	Rear	10.5"
2009	Chevrolet	Express 3500	Rear	10.5"
2009	Chevrolet	Silverado 2500 HD	Rear	10.5"
2009	Chevrolet	Suburban 2500	Rear	10.5"
2009	GMC	Savana 2500	Rear	10.5"
2009	GMC	Savana 3500	Rear	10.5"
2009	GMC	Sierra 2500 HD	Rear	10.5"
2009	GMC	Yukon XL 2500	Rear	10.5"
2008	Chevrolet	Express 2500	Rear	10.5"
2008	Chevrolet	Express 3500	Rear	10.5"
2008	Chevrolet	Silverado 2500 HD	Rear	10.5"
2008	Chevrolet	Suburban 2500	Rear	10.5"
2008	GMC	Savana 2500	Rear	10.5"
2008	GMC	Savana 3500	Rear	10.5"
2008	GMC	Sierra 2500 HD	Rear	10.5"
2008	GMC	Yukon XL 2500	Rear	10.5"
2007	Chevrolet	Express 2500	Rear	10.5"
2007	Chevrolet	Express 3500	Rear	10.5"
2007	Chevrolet	Silverado 2500 HD	Rear	10.5"
2007	GMC	Savana 2500	Rear	10.5"
2007	GMC	Savana 3500	Rear	10.5"
2007	GMC	Sierra 2500 HD	Rear	10.5"
2006	Chevrolet	Avalanche 2500	Rear	10.5"
2006	Chevrolet	Express 2500	Rear	10.5"
2006	Chevrolet	Express 3500	Rear	10.5"
2006	Chevrolet	Silverado 2500 HD	Rear	10.5"
2006	GMC	Savana 2500	Rear	10.5"
2006	GMC	Savana 3500	Rear	10.5"
2006	GMC	Sierra 2500 HD	Rear	10.5"
2005	Chevrolet	Avalanche 2500	Rear	10.5"
2005	Chevrolet	Express 2500	Rear	10.5"
2005	Chevrolet	Express 3500	Rear	10.5"
2005	Chevrolet	Silverado 2500 HD	Rear	10.5"
2005	GMC	Savana 2500	Rear	10.5"
2005	GMC	Savana 3500	Rear	10.5"
2005	GMC	Sierra 2500 HD	Rear	10.5"
2004	Chevrolet	Avalanche 2500	Rear	10.5"
2004	Chevrolet	Express 2500	Rear	10.5"
2004	Chevrolet	Express 3500	Rear	10.5"
2004	Chevrolet	Silverado 2500	Rear	10.5"
2004	Chevrolet	Silverado 2500 HD	Rear	10.5"
2004	GMC	Savana 2500	Rear	10.5"
2004	GMC	Savana 3500	Rear	10.5"
2004	GMC	Sierra 2500	Rear	10.5"
2004	GMC	Sierra 2500 HD	Rear	10.5"
2003	Chevrolet	Avalanche 2500	Rear	10.5"
2003	Chevrolet	Express 2500	Rear	10.5"
2003	Chevrolet	Express 3500	Rear	10.5"
2003	Chevrolet	Silverado 2500	Rear	10.5"
2003	Chevrolet	Silverado 2500 HD	Rear	10.5"
2003	GMC	Savana 2500	Rear	10.5"
2003	GMC	Savana 3500	Rear	10.5"
2003	GMC	Sierra 2500	Rear	10.5"
2003	GMC	Sierra 2500 HD	Rear	10.5"
2002	Chevrolet	Avalanche 2500	Rear	10.5"
2002	Chevrolet	Express 2500	Rear	10.5"
2002	Chevrolet	Express 3500	Rear	10.5"
2002	Chevrolet	Silverado 2500	Rear	10.5"
2002	Chevrolet	Silverado 2500 HD	Rear	10.5"
2002	GMC	Savana 2500	Rear	10.5"
2002	GMC	Savana 3500	Rear	10.5"
2002	GMC	Sierra 2500	Rear	10.5"
2002	GMC	Sierra 2500 HD	Rear	10.5"
2001	Chevrolet	Express 2500	Rear	10.5"
2001	Chevrolet	Express 3500	Rear	10.5"
2001	Chevrolet	Silverado 2500	Rear	10.5"
2001	Chevrolet	Silverado 2500 HD	Rear	10.5"
2001	GMC	Savana 2500	Rear	10.5"
2001	GMC	Savana 3500	Rear	10.5"
2001	GMC	Sierra 2500	Rear	10.5"
2001	GMC	Sierra 2500 HD	Rear	10.5"
2000	Chevrolet	C2500	Rear	10.5"
2000	Chevrolet	C3500	Rear	10.5"
2000	Chevrolet	Express 2500	Rear	10.5"
2000	Chevrolet	Express 3500	Rear	10.5"
2000	Chevrolet	K2500	Rear	10.5"
2000	Chevrolet	K3500	Rear	10.5"
2000	Chevrolet	Silverado 2500	Rear	10.5"
2000	GMC	C2500	Rear	10.5"
2000	GMC	C3500	Rear	10.5"
2000	GMC	K2500	Rear	10.5"
2000	GMC	K3500	Rear	10.5"
2000	GMC	Savana 2500	Rear	10.5"
2000	GMC	Savana 3500	Rear	10.5"
2000	GMC	Sierra 2500	Rear	10.5"
1999	Chevrolet	C2500	Rear	10.5"
1999	Chevrolet	C3500	Rear	10.5"
1999	Chevrolet	Express 2500	Rear	10.5"
1999	Chevrolet	Express 3500	Rear	10.5"
1999	Chevrolet	K2500	Rear	10.5"
1999	Chevrolet	K3500	Rear	10.5"
1999	Chevrolet	P30	Rear	10.5"
1999	Chevrolet	Silverado 2500	Rear	10.5"
1999	GMC	C2500	Rear	10.5"
1999	GMC	C3500	Rear	10.5"
1999	GMC	K2500	Rear	10.5"
1999	GMC	K3500	Rear	10.5"
1999	GMC	P3500	Rear	10.5"
1999	GMC	Savana 2500	Rear	10.5"
1999	GMC	Savana 3500	Rear	10.5"
1999	GMC	Sierra 2500	Rear	10.5"
1998	Chevrolet	C2500	Rear	10.5"
1998	Chevrolet	C3500	Rear	10.5"
1998	Chevrolet	Express 2500	Rear	10.5"
1998	Chevrolet	Express 3500	Rear	10.5"
1998	Chevrolet	K2500	Rear	10.5"
1998	Chevrolet	K3500	Rear	10.5"
1998	Chevrolet	P30	Rear	10.5"
1998	GMC	C2500	Rear	10.5"
1998	GMC	C3500	Rear	10.5"
1998	GMC	K2500	Rear	10.5"
1998	GMC	K3500	Rear	10.5"
1998	GMC	P3500	Rear	10.5"
1998	GMC	Savana 2500	Rear	10.5"
1998	GMC	Savana 3500	Rear	10.5"

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

4620042100DRK325BMKSDK325-BMK

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.