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Gates 18641 HVAC Heater Hose - Heater Outlet
| Brand | Gates 18641 |
|---|---|
| Position | Heater Outlet |
| 0 | |
| Yes | |
| Branch Quantity | 0 |
| Centerline Length | 10 |
| Centerline Length | 254 |
| Centerline Length (in) | 10 |
| Centerline Length (mm) | 254 |
| End 1 Inside Diameter | .63 |
| End 1 Inside Diameter | 16 |
| End 2 Inside Diameter | .63 |
| End 2 Inside Diameter | 16 |
| Material | EPDM |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
| Product line | Molded Heater Hose |
| Fits | Ram · 4 vehicles |
OEM-style molded hose. Factory-molded for a precise, ready-to-fit replacement.
EPDM construction. Resists heat and coolant for dependable fluid transfer.
Versatile application. Suitable for coolant, water, air, and marine use.
Cross-references Gates 18641, 10641 and 14764S for the same application. See all 4.
Gates Molded Heater Hose for Ram 2500/3500
The Gates 18641 molded heater hose is an OEM-style coolant hose built for tight engine bays and factory routing. It is formed to match the application and is suitable for coolant, water, and air transfer, with marine application approval.
Key Features
- Factory-molded design for a precise OE-style fit
- EPDM construction for heater and coolant service
- 3/4 in. inside diameter at both ends for consistent flow
- 10 in. centerline length for compact routing
- Built for smaller, tighter-fitting engine compartments
- Gates Molded Heater Hose line for application-specific replacement needs
Detailed Description
Gates part number 18641 is a molded HVAC heater hose designed for 2011-2012 Ram 2500 heater outlet and 2011-2012 Ram 3500 heater outlet applications. Its factory-molded shape helps follow the original hose path, which is important in compact engine bays where straight hose sections can create routing issues. The EPDM material is commonly used in cooling-system service for its durability in heat and fluid exposure. This part cross-references 10641 and 14764S for the same application.
As part of the Gates Molded Heater Hose product line, this hose is built as an OE-style replacement for vehicles that require a formed coolant hose rather than a universal cut-to-fit piece. The Gates 18641 is a direct-fit option for Ram 2500 and Ram 3500 heater outlet service where correct bend shape and end sizing matter.
Common Problems This Hose Can Help Address
- Cracked or deteriorated heater hose material
- Coolant leaks at a molded hose section
- Poor hose routing in tight engine compartments
- Restricted heater circuit flow from a damaged hose
- Replacement needs after hose swelling or hardening
Installation Notes and Tips
Verify the hose routing, end inside diameter, and centerline length before installation. Confirm the vehicle is a 2011-2012 Ram 2500 or 2011-2012 Ram 3500 with a heater outlet application. Inspect adjoining fittings and clamps for wear, and replace any damaged sealing surfaces before installing the new hose.
Quality Assurance
Gates is a recognized supplier of automotive hose products, and this molded heater hose is built to OE-style dimensions for application-specific replacement on Ram cooling and heater systems.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2012 | Ram | 2500 | 6.7L | L6 | DIESEL | Heater Outlet | Molded Heater Hose |
| 2012 | Ram | 3500 | 6.7L | L6 | DIESEL | Heater Outlet | Molded Heater Hose |
| 2011 | Ram | 2500 | 6.7L | L6 | DIESEL | Heater Outlet | Molded Heater Hose |
| 2011 | Ram | 3500 | 6.7L | L6 | DIESEL | Heater Outlet | Molded Heater Hose |
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