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Dayco 88451 HVAC Heater Hose
Overview of Dayco Small I.D. Heater Hose 88451
The Dayco Small I.D. Heater Hose 88451 is designed for reliable HVAC system performance in select Ford, Mazda, Mercury, and Suzuki vehicles. Engineered with durable EPDM material, this hose ensures consistent heat transfer and resistance to automotive fluids.
- Constructed from high-quality EPDM for heat and chemical resistance
- Black single inside diameter hose with 3/4 inch ID on both ends
- Meets SAE J20R3 Class D-1 and SAE J1684 Type EC specifications
- Compatible with multiple Ford, Mazda, Mercury, and Suzuki models
- Part of Dayco's Small I.D. Heater Hose product line for HVAC applications
Detailed Product Description
The Dayco Small I.D. Heater Hose 88451 is a single inside diameter hose measuring 3/4 inch on both ends, designed specifically for HVAC heater systems. Made from EPDM (ethylene propylene diene monomer) rubber, it offers excellent resistance to heat, ozone, and automotive fluids, ensuring durability and long service life. This hose does not include a heat shield or protective sleeve, making it suitable for applications where such features are not required. It complies with SAE J20R3 Class D-1 and SAE J1684 Type EC standards, confirming its suitability for automotive heating and cooling systems.
The Small I.D. Heater Hose product line by Dayco focuses on providing precise fitment and reliable performance for smaller diameter heater hoses used in vehicle HVAC systems. This line is engineered to meet OEM specifications, ensuring compatibility and durability in demanding automotive environments.
Compatible Vehicles and Applications
This heater hose is compatible with a range of vehicles including Ford Escape, Ford Taurus, Ford Sable, Mazda 3 and 3 Sport, Mercury Mariner, Suzuki Forenza, and Tribute models. The Dayco 88451 heater hose is designed to maintain proper coolant flow within the HVAC system, supporting effective cabin heating and defrosting functions.
- Replacement for worn or cracked heater hoses in HVAC systems
- Resolves coolant leaks causing heater core inefficiency
- Prevents overheating issues related to restricted coolant flow
- Addresses hose swelling or softening due to age or chemical exposure
- Restores proper heater core performance in compatible Ford, Mazda, Mercury, and Suzuki models
Installation Notes and Tips
When installing the Dayco Small I.D. Heater Hose 88451, ensure the engine is cool and the cooling system is depressurized. Verify the hose diameter matches the vehicle’s specifications (3/4 inch ID). Inspect hose connections and clamps for wear and replace if necessary to prevent leaks. Proper routing without kinks or sharp bends will maintain optimal coolant flow and heater performance.
Quality Assurance and Warranty
Dayco manufactures the Small I.D. Heater Hose 88451 to meet stringent SAE standards, ensuring consistent quality and durability. While specific warranty details are not provided, Dayco products typically adhere to industry quality controls and are backed by the brand’s commitment to automotive component reliability.
| Brand | Dayco |
| Part Number | 88451 |
| Position | Small I.D. Heater Hose, Tee To Reservoir |
| Color | Black |
| End 1 Inside Diameter | 3/4 |
| End 2 Inside Diameter | 3/4 |
| Hose Type | Single I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R3 Class D-1, SAE J1684 Type EC |
| Trunk Height | 17 |
This part fits 49 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2013 | Mazda | 3 | 2.5L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2013 | Mazda | 3 | 2.3L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2013 | Mazda | 3 Sport | 2.5L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2012 | Ford | Escape | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2012 | Mazda | 3 | 2.5L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2012 | Mazda | 3 | 2.3L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2012 | Mazda | 3 Sport | 2.5L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2011 | Mazda | 3 | 2.5L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2011 | Mazda | 3 | 2.3L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2010 | Ford | Escape | 2.5L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2010 | Mazda | 3 | 2.3L | L4 | Tee To Reservoir | Small I.D. Heater Hose | |
| 2010 | Mazda | Tribute | 2.5L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2010 | Mercury | Mariner | 2.5L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2009 | Ford | Escape | 2.5L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2009 | Mazda | Tribute | 2.5L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2009 | Mercury | Mariner | 2.5L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2008 | Ford | Escape | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2008 | Ford | Escape | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2008 | Mazda | Tribute | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2008 | Mazda | Tribute | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2008 | Mercury | Mariner | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2008 | Mercury | Mariner | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2008 | Suzuki | Forenza | Tee To Engine | Small I.D. Heater Hose | |||
| 2007 | Ford | Escape | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2007 | Ford | Escape | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2007 | Mercury | Mariner | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2007 | Mercury | Mariner | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2007 | Suzuki | Forenza | Tee To Engine | Small I.D. Heater Hose | |||
| 2006 | Ford | Escape | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2006 | Ford | Escape | 3.0L | V6 | Reservoir To Upper Radiator | Small I.D. Heater Hose | |
| 2006 | Mazda | Tribute | 2.3L | L4 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2006 | Mazda | Tribute | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2006 | Mercury | Mariner | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2006 | Mercury | Mariner | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2006 | Suzuki | Forenza | Tee To Engine | Small I.D. Heater Hose | |||
| 2005 | Ford | Escape | 2.3L | L4 | GAS | Coolant Reservoir | Small I.D. Heater Hose |
| 2005 | Ford | Escape | 3.0L | V6 | Reservoir To Upper Radiator | Small I.D. Heater Hose | |
| 2005 | Mazda | Tribute | 2.3L | L4 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2005 | Mazda | Tribute | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2005 | Mercury | Mariner | 2.3L | L4 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2005 | Mercury | Mariner | 3.0L | V6 | Coolant Reservoir | Small I.D. Heater Hose | |
| 2005 | Suzuki | Forenza | Tee To Engine | Small I.D. Heater Hose | |||
| 2004 | Suzuki | Forenza | Tee To Engine | Small I.D. Heater Hose | |||
| 2002 | Ford | Taurus | 3.0L | V6 | Pipe To Water Pump | Small I.D. Heater Hose | |
| 2002 | Mercury | Sable | 3.0L | V6 | Pipe To Water Pump | Small I.D. Heater Hose | |
| 2001 | Ford | Taurus | 3.0L | V6 | Pipe To Water Pump | Small I.D. Heater Hose | |
| 2001 | Mercury | Sable | 3.0L | V6 | Pipe To Water Pump | Small I.D. Heater Hose | |
| 2000 | Ford | Taurus | 3.0L | V6 | Pipe To Water Pump | Small I.D. Heater Hose | |
| 2000 | Mercury | Sable | 3.0L | V6 | Pipe To Water Pump | Small I.D. 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.