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GatesPart #: 19700
Gates 19700 HVAC Heater Hose - Auxiliary Water Pump Outlet, Engine To Auxiliary Heater or Engine To Heater
⚙️ 77 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦Molded Heater Hose, Engine To Heater, Auxiliary Water Pump Outlet, and Engine To Auxiliary Heater
🚗Fitment: Buick, Cadillac, Chevrolet, GMC, Isuzu, and Oldsmobile, Ascender, Bravada, Catera, Envoy, Envoy XL, Envoy XUV, Express 1500, Express 2500, Express 3500, G30, Rainier, Savana 1500, Savana 2500, Savana 3500, Trailblazer, and Trailblazer EXT
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Gates Molded Heater Hose 19700
The Gates Molded Heater Hose 19700 is engineered for reliable HVAC system performance in select GM and Isuzu vehicles. Designed with durable EPDM material, this molded heater hose ensures consistent heat transfer and long-lasting service in Buick, Cadillac, Chevrolet, GMC, Isuzu, and Oldsmobile models.
- Constructed from high-quality EPDM for heat and chemical resistance
- Molded design for precise fit and leak prevention
- Centerline length of 11.6 inches (295 mm) for accurate replacement
- Consistent inside diameter of 0.77 inches (20 mm) on both ends
- Compatible with multiple GM and Isuzu vehicles including Trailblazer and Envoy
Detailed Product Description
The Gates Molded Heater Hose 19700 is part of the Molded Heater Hose product line, which focuses on delivering pre-formed hoses that match original equipment specifications. This hose is molded to exact dimensions, providing a secure and leak-free connection within the HVAC system. Made from EPDM, it offers resistance to heat, ozone, and coolant chemicals, making it suitable for the demanding environment of automotive heating systems. The hose features a centerline length of 11.6 inches (295 mm) and an inside diameter of 0.77 inches (20 mm) on both ends, ensuring compatibility with the heater core and engine connections.
Compatible Vehicles and Applications
This HVAC heater hose is compatible with a range of vehicles, including Buick Ascender, Cadillac Catera, Chevrolet Trailblazer and Express series, GMC Envoy and Savana models, Isuzu Bravada, and Oldsmobile models. It is designed to replace worn or damaged heater hoses in these vehicles, restoring proper coolant flow and heating system function.
- Heater core hose leaks or cracks
- Coolant loss due to hose deterioration
- HVAC system overheating or insufficient cabin heat
- Swollen or collapsed heater hoses affecting coolant flow
- Replacement during routine cooling system maintenance
Installation Notes and Tips
When installing the Gates Molded Heater Hose 19700, ensure the vehicle is cool and the cooling system is depressurized. Verify the hose orientation matches the molded shape for proper fit. Inspect hose clamps and replace if necessary to maintain a secure seal. Proper installation helps prevent leaks and ensures optimal heater performance.
Quality Assurance and Warranty
Gates Molded Heater Hose 19700 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded construction provide reliable service life under normal operating conditions. While specific warranty details are not provided, Gates products typically come with a limited warranty against defects in material and workmanship.
| Brand | Gates |
| Part Number | 19700 |
| Position | Molded Heater Hose, Engine To Heater, Auxiliary Water Pump Outlet, and Engine To Auxiliary Heater |
| Material | Epdm |
| End 1 Inside Diameter | .77 |
| End 1 Inside Diameter | 20 |
| End 2 Inside Diameter | .77 |
| End 2 Inside Diameter | 20 |
| Centerline Length | 11.6 |
| Centerline Length | 295 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| Centerline Length (in) | 11.6 |
| Centerline Length (mm) | 295 |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 77 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2005 | Buick | Rainier | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2005 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2005 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2005 | GMC | Envoy | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2005 | GMC | Envoy XL | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2005 | GMC | Envoy XUV | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2005 | Isuzu | Ascender | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | Buick | Rainier | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | Chevrolet | Express 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2004 | Chevrolet | Express 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2004 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | GMC | Envoy | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | GMC | Envoy XL | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | GMC | Envoy XUV | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | GMC | Savana 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2004 | GMC | Savana 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2004 | Isuzu | Ascender | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2004 | Oldsmobile | Bravada | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2003 | Chevrolet | Express 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2003 | Chevrolet | Express 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2003 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2003 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2003 | GMC | Envoy | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2003 | GMC | Envoy XL | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2003 | GMC | Savana 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2003 | GMC | Savana 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2003 | Isuzu | Ascender | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2003 | Oldsmobile | Bravada | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2002 | Chevrolet | Express 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 1500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 1500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 2500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 2500 | 5.7L | V8 | BI-FUEL | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 2500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 3500 | 5.7L | V8 | BI-FUEL | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Express 3500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | G30 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Chevrolet | Trailblazer | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2002 | Chevrolet | Trailblazer EXT | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2002 | GMC | Envoy | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2002 | GMC | Envoy XL | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2002 | GMC | Savana 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 1500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 1500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 2500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 2500 | 5.7L | V8 | BI-FUEL | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 2500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 3500 | 5.7L | V8 | BI-FUEL | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | GMC | Savana 3500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2002 | Oldsmobile | Bravada | 4.2L | L6 | GAS | Engine To Heater | Cut to fit for vehicles without auxiliary heater; Molded Heater Hose |
| 2001 | Cadillac | Catera | 3.0L | V6 | GAS | Auxiliary Water Pump Outlet | Molded Heater Hose |
| 2001 | Chevrolet | Express 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 1500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 1500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 2500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 2500 | 5.7L | V8 | CNG | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 2500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 3500 | 5.7L | V8 | CNG | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | Chevrolet | Express 3500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 1500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 1500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 1500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 2500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 2500 | 5.0L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 2500 | 5.7L | V8 | BI-FUEL | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 2500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 3500 | 4.3L | V6 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 3500 | 5.7L | V8 | BI-FUEL | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2001 | GMC | Savana 3500 | 5.7L | V8 | GAS | Engine To Auxiliary Heater | Radiator and HVAC compatible coolant and heater hose.; Molded Heater Hose |
| 2000 | Cadillac | Catera | 3.0L | V6 | GAS | Auxiliary Water Pump Outlet | Molded Heater Hose |
| 1999 | Cadillac | Catera | 3.0L | V6 | GAS | Auxiliary Water Pump Outlet | Molded Heater Hose |
| 1998 | Cadillac | Catera | 3.0L | V6 | GAS | Auxiliary Water Pump Outlet | Molded Heater Hose |
| 1997 | Cadillac | Catera | 3.0L | V6 | GAS | Auxiliary Water Pump Outlet | Molded Heater Hose |
* 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:
1170014196S15009398159639561970090529645
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.