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Gates 42138 Engine Water Pump
| Brand | Gates 42138 |
|---|---|
| Housing Material | Cast aluminum |
| Impeller Material | Cast iron |
| Impeller Rotation | Standard |
| Includes Back Housing | No |
| Thermostat And Housing Included | No |
| Contents | Water pump, gasket |
| Drive Style | Accessory belt |
| Fan Clutch Included | No |
| Pulley Included | No |
| Timing Belt Driven | No |
| Product line | Water Pump (Standard) |
| Fits | Mazda · 3 vehicles |
OE-quality fit. Built for worry-free operation and a precise replacement experience.
Cast aluminum housing. Lightweight construction helps deliver durable, reliable cooling performance.
Leak-tested assembly. Every pump is tested for seals, bearings, and leakage before it ships.
Cross-references Airtex AW9394, Airtex Fuel Pumps 42138 and Dorman - HELP 20773 for the same application. See all 27.
Gates Water Pump for Mazda MPV
The Gates 42138 engine water pump is a standard replacement for select 1996-1998 Mazda MPV applications with a 19mm shaft. Built with a cast aluminum housing and cast iron impeller, it is engineered for dependable coolant circulation in everyday driving conditions.
Gates Water Pump (Standard) focuses on OE-quality fit and consistent operation for the Mazda MPV cooling system. This part number, 42138, is a direct-fit water pump and gasket assembly for the listed vehicle application.
Key Features
- Engine water pump for accessory belt-driven applications
- Cast aluminum housing for durable construction
- Cast iron impeller with standard rotation
- Includes water pump and gasket
- 100% functional testing of seals and bearings
- 100% leakage testing of the casting and assembled pump
- No back housing, thermostat housing, fan clutch, or pulley included
- Not timing belt driven
Detailed Description
Gates 42138 is built for the cooling system on 1996-1998 Mazda MPV models, with fitment noted for the 19mm shaft configuration. The pump uses an accessory belt drive style and standard impeller rotation, making it a straightforward replacement for the original engine water pump in the specified application. Gates manufactures this water pump with premium alloy materials and verifies seal, bearing, and leakage performance before release.
This part cross-references Airtex AW9394 for the same application. If you are servicing a Mazda MPV cooling system and need a replacement water pump, 42138 provides the correct fitment details for the listed years and configuration.
Common Problems This Part Can Address
- Coolant circulation loss from a worn or leaking water pump
- Overheating caused by reduced coolant flow
- Noise from failing pump bearings or seals
- Coolant seepage at the pump housing or gasket surface
- Cooling system service needs on 1996-1998 Mazda MPV models
Installation Notes and Tips
Verify the 19mm shaft application before installation on your Mazda MPV. Inspect the belt drive components, gasket surface, and surrounding cooling system parts during replacement, and confirm proper coolant fill and bleed procedures after installation. This pump is not timing belt driven and does not include a pulley, thermostat housing, or back housing.
Quality Assurance
Gates water pumps are manufactured with a focus on durability and OE-quality fit. Each unit undergoes functional testing of seals and bearings, along with leakage testing of the casting and assembled pump, to help confirm performance before installation.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1998 | Mazda | MPV | 3.0L | V6 | GAS | N/A | W/19mm Shaft; Water Pump (Standard) |
| 1997 | Mazda | MPV | 3.0L | V6 | GAS | N/A | W/19mm Shaft; Water Pump (Standard) |
| 1996 | Mazda | MPV | 3.0L | V6 | GAS | N/A | W/19mm Shaft; Water Pump (Standard) |
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