Fleece FPE-CLNTBYPS-CUMMINS-SER-Kit Coolant Bypass Service Kit | 1994-2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Features:

• Services Fleece Performance Coolant Bypass systems
• Compatible with 1994–2018 5.9L and 6.7L Cummins engines
• Includes two thermostats to cover all model years
• Only one thermostat used during installation
• Kit includes all necessary O-rings and seals
• O-rings provided for AN fitting service
• Fasteners included for complete installation
• Supports long-term bypass system maintenance
• Does not include primary Cummins engine thermostat
• Some O-rings not used in 1994–2002 applications
• Designed specifically for Fleece coolant bypass kits

Keep Your Coolant Bypass System Performing Like New

When you're running a Cummins that’s been upgraded with a Fleece Performance Coolant Bypass, routine maintenance matters more than you think. The Fleece FPE-CLNTBYPS-CUMMINS-SER-Kit gives you everything you need to service your bypass system and keep it working reliably for the long haul. Whether you're hauling, towing, or just keeping temps in check under heavy load, this kit ensures your system stays leak-free and running smooth. It includes all the O-rings, fasteners, and even a new thermostat, making it a one-stop solution to refresh your setup. No need to chase down part numbers or guess what fits, this kit is made specifically for the bypass you already trust. And with thermostats included to match all Cummins production years, you’ll have the right part ready no matter what truck you’re working on. If you’re serious about keeping your cooling system dialed in, this is the service kit you don’t want to skip.

Complete Factory Matched Kit For Precision Bypass Maintenance

The Fleece Performance Coolant Bypass Service Kit (FPE-CLNTBYPS-CUMMINS-SER-Kit) is specifically engineered to support long-term performance of Fleece’s bypass systems on 1994–2018 Dodge RAM 2500 and 3500 models with 5.9L or 6.7L Cummins engines. The kit includes two thermostats to ensure compatibility with all model years, although only one will be used depending on the specific application. It also features a full set of O-rings, including three square-cut, one standard, and two AN fitting O-rings, offering full coverage for a complete seal refresh. When servicing 1994–2002 systems, not all O-rings will be needed, but the inclusion of all options makes this a universal fit across production ranges. The provided fasteners ensure a secure and leak-free reassembly, maintaining the integrity of the bypass system under demanding conditions. This kit does not include the Cummins engine thermostat but focuses entirely on the components related to the Fleece bypass itself. By using this service kit, owners can restore factory-like precision and dependability to their coolant bypass system. It's the most efficient way to maintain performance and extend the life of one of the most critical upgrades on a modified diesel.

Fits: 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 Dodge RAM 5.9L/6.7L 2500/3500 Cummins

Notes:

• Designed to service Fleece Performance Coolant Bypass systems
• Compatible with 1994–2018 Dodge RAM 2500/3500 5.9L and 6.7L Cummins
• Includes two thermostats for full model year coverage
• Only one thermostat will be used during installation
• Kit does not include the main Cummins engine thermostat
• Includes all O-rings required for a complete reseal
• Some O-rings may not be used on 1994–2002 model trucks
• Includes O-rings specifically for AN fittings
• Comes with new fasteners for proper reassembly
• Ideal for preventative maintenance and leak prevention