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Gates 19523 HVAC Heater Hose - Engine To Heater
| Brand | Gates 19523 |
|---|---|
| Position | Engine To Heater |
| 0 | |
| Yes | |
| Branch Quantity | 0 |
| Centerline Length | 15.2 |
| Centerline Length | 386 |
| Centerline Length (in) | 15.2 |
| Centerline Length (mm) | 386 |
| End 1 Inside Diameter | .62 |
| End 1 Inside Diameter | 16 |
| End 2 Inside Diameter | .75 |
| End 2 Inside Diameter | 19 |
| Material | EPDM |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
| Product line | Molded Heater Hose |
| Fits | Chevrolet, GMC, and Isuzu · 22 vehicles |
OEM-style molded hose. Factory-molded for a precise, ready-to-fit replacement.
EPDM construction. Resists heat and wear in coolant, water, and air service.
Versatile application. Approved for marine use as well.
Cross-references Davico Mfg 19523, 11523 and 14508S for the same application. See all 7.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Gates Molded Heater Hose for Engine Cooling
The Gates 19523 molded heater hose is a factory-shaped coolant hose built for tight engine bays and OE-style routing. It is made from EPDM and is used in coolant, water, and air applications, with marine application approval noted by the manufacturer.
Compatible with 2008-2012 Chevrolet Colorado and 2008-2012 GMC Canyon engine-to-heater routing, this molded hose supports the specific bends needed in compact HVAC and cooling layouts. It also fits 2008 Isuzu i-290 and 2008 Isuzu i-370 engine-to-heater applications.
Key Features
- Gates Molded Heater Hose, part number 19523
- Factory-molded, OE-style shape for tighter engine compartments
- EPDM construction for coolant, water, and air service
- End 1 inside diameter: 0.62 in. (16 mm)
- End 2 inside diameter: 0.75 in. (19 mm)
- Centerline length: 15.2 in. (386 mm)
- Molded design for engine-to-heater routing
Product Details
The Gates 19523 is part of the Molded Heater Hose line, which focuses on shaped hoses that follow original routing in modern vehicles with limited clearance. This hose is formed to match the space constraints found in today’s smaller engine compartments, helping maintain proper hose alignment between the engine and heater circuit. The EPDM material is selected for common cooling-system service, and the hose is also approved for marine applications according to Gates.
This part cross-references Davico Mfg 19523 for the same application.
Common Uses
- Replacing a worn or cracked engine-to-heater hose
- Restoring coolant flow in the heater circuit
- Addressing leaks at a molded hose section
- Correcting hose routing in a tight engine bay
- Servicing cooling-system hoses on Chevrolet Colorado, GMC Canyon, and Isuzu i-290/i-370 applications
Installation Notes and Quality Assurance
Verify end diameters, centerline length, and molded shape against the original hose before installation. Confirm routing on the vehicle to ensure the hose follows the factory path without twist or interference. For best results, inspect adjoining clamps, fittings, and nearby cooling-system components during replacement.
Gates manufactures this molded heater hose as an OE-style replacement part for the listed applications. Part number 19523 is identified for the fitments shown above.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2012 | Chevrolet | Colorado | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2012 | Chevrolet | Colorado | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2012 | GMC | Canyon | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2012 | GMC | Canyon | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2011 | Chevrolet | Colorado | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2011 | Chevrolet | Colorado | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2011 | GMC | Canyon | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2011 | GMC | Canyon | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2010 | Chevrolet | Colorado | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2010 | Chevrolet | Colorado | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2010 | GMC | Canyon | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2010 | GMC | Canyon | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2009 | Chevrolet | Colorado | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2009 | Chevrolet | Colorado | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2009 | GMC | Canyon | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2009 | GMC | Canyon | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2008 | Chevrolet | Colorado | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2008 | Chevrolet | Colorado | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2008 | GMC | Canyon | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2008 | GMC | Canyon | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
| 2008 | Isuzu | i-290 | 2.9L | L4 | GAS | Engine To Heater | Molded Heater Hose |
| 2008 | Isuzu | i-370 | 3.7L | L5 | GAS | Engine To Heater | Molded Heater Hose |
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