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Upgrade your Miata’s heater system with the Gates 18937 Small-ID Molded Heater Hose, designed precisely for 1990–1997 Mazda MX-5 Miata 1.6L (NA chassis) yet also shared across applications like the Ford Explorer and Suzuki Grand Vitara. Built to OEM standards, this molded coolant hose offers form-fit accuracy and reliable performance. FinditParts+1
Constructed from premium EPDM rubber, reinforced with synthetic fiber knit, and covered by an EPDM outer layer, the 18937 resists heat, ozone, and electrochemical degradation—common causes of hose failure. Rated to withstand temperatures from -40°F to +275°F (-40°C to +135°C), it delivers durability under street and track use.
Key specs include a centerline length of ~10.2 in (259 mm) and uniform inside diameters of 0.62 in (16 mm) for both hose ends—providing a secure, leak-free seal across connections.
This molded heater hose meets or exceeds SAE 20R3 Type EC Class D-1/D-2 specifications, ensuring trusted performance and longevity.
Whether you're repairing a worn-out heater hose on a daily-driven NA Miata or preparing for a rigorous track session, the Gates 18937 delivers peace of mind. Trust in Gates' heritage of quality and precision for a reliable, OEM-style solution.
This Part Fits:
Year | Make | Model | Submodel |
---|---|---|---|
1990-1997 | Mazda | Miata | Base |
1993 | Mazda | Miata | LE |
1994-1997 | Mazda | Miata | M Edition |
1991 | Mazda | Miata | SE |
1997 | Mazda | Miata | STO |
Garage 56 believes so strongly in the products we sell that every item comes with a full 365-day replacement gurantee - regardless of the manufacturer warranty timeline.
In-stock orders placed before 1pm EST ship same day. All qualifying orders of $56 or more ship free. Flat-rate and expedited shipping options are available at checkout.
Items marked as "Special Order" are available for shipment direct from the manufacturer - also known as "drop shipping". In most instances we are able to ship directly to you however, in limited circumstances we will need to order the item into our warehouse before we are able to dispatch to you. In all cases, your form of payment will not be finalized until we confirm availability of all Special Order items - place your order with confidence!