Fleece FPE-CUMM-LHCL-0312 Lower Heater Return Hose | 2003-2012 Dodge Ram 2500/3500 5.9L/6.7L Cummins

Features:

• Replaces worn factory heater return hose
• High-temp silicone resists heat and pressure
• Includes durable hose clamps for easy install
• Improves long-term coolant system reliability
• Direct replacement for multiple Mopar part numbers
• Fits 2003–2012 Ram 2500 and 3500 Cummins
• Works with both 5.9L and 6.7L Cummins 24V engines
• Designed to prevent leaks and hose failure
• Easy drop-in installation with basic hand tools
• Compatible with OEM-style hose routing
• Ideal for maintenance or cooling system repairs
• Backed by a 1-year limited parts warranty

Stop Coolant Leaks Before They Become A Bigger Problem

If you're chasing down a coolant leak on your 2003–2012 Ram Cummins, there's a good chance the lower heater return hose is the culprit. These factory hoses get brittle over time, especially after years of heat cycles, and when they go, they can leave you stranded or stuck cleaning up a mess. The Fleece Performance Lower Heater Return Hose is a simple, reliable upgrade that replaces that weak point with high-temp silicone built to last. It holds up to heat, pressure, and the kind of abuse that comes with towing, hauling, or daily driving a high-mileage truck. You get everything you need in the box, including new hose clamps, so you can knock out the job and get back on the road. Whether you're fixing an active leak or replacing hoses as preventative maintenance, this is a smart, low-cost solution that keeps your cooling system tight. It’s one of those upgrades that pays for itself in peace of mind.

Direct Fit Silicone Hose Built For The Long Haul

The Fleece FPE-CUMM-LHCL-0312 Lower Heater Return Hose is designed as a direct replacement for the factory return hose on 2003–2012 Dodge Ram 2500 and 3500 trucks equipped with 5.9L or 6.7L 24V Cummins engines. This hose replaces Mopar part numbers like 68186700AA and 55056673AC and eliminates the failure-prone rubber construction found in the OEM design. Fleece uses high-temperature silicone to resist cracking, dry rot, and pressure-related wear that commonly affects older factory hoses. The kit comes complete with two hose clamps for a tight, leak-free seal and installs easily with standard hand tools. It maintains OEM-style routing for a clean fit and requires no modifications during install. Whether you're chasing down cooling issues or upgrading worn components during a routine service, this hose delivers durability and confidence under the hood. Backed by a one-year limited warranty, it's a quality fix designed to meet the demands of Cummins-powered trucks.

Fitment:

2003, 2004, 2005, 2006, 2007 Dodge Ram 2500/3500 5.9L Cummins

2007.5, 2008, 2009, 2010, 2011, 2012 Dodge Ram/RAM 2500/3500 6.7L Cummins 

Notes:

• Fits 2003–2012 Dodge Ram 2500 and 3500 models.
• Compatible with both 5.9L and 6.7L 24V Cummins engines.
• Replaces factory lower heater return hose only.
• Not a complete kit, only includes return hose and clamps.
• Designed as a direct replacement for OEM hose routing.
• Replaces Mopar part numbers like 68186700AA and 55056673AC.
• Ideal for fixing coolant leaks or aging rubber hoses.
• Pairs well with Fleece’s full heater hose kit (FPE-CUMM-HCL-KIT-0312).
• Installation requires standard hand tools and coolant refill.
• Includes two hose clamps for a secure installation.
• Prop 65 warning label.
• Covered by Fleece’s 1-year limited parts warranty.

Install Instructions