RIDEX Engine Water Pump – Mazda 121 / 323 / Demio / MX-3 / Xedos • 1260W0122

RIDEX 1260W0122 Engine Water Pump – Mazda 121 / 323 / Demio / MX-3 / Xedos

Replacement RIDEX mechanical engine coolant water pump for a wide range of Mazda 121, 323, Demio, MX-3 and Xedos petrol applications.

MX-5 fitment warning: Although some broad aftermarket catalogues cross-reference 1260W0122 to Mazda MX-5 NA and NB models, this product is not being listed for MX-5 fitment. MazSpec's product-specific catalogue assigns this pump to other Mazda models, and there is documented evidence of an MX-5 installation issue involving missing timing-belt idler/tensioner mounting provisions.

The engine water pump circulates coolant through the cylinder block, cylinder head, radiator and associated cooling circuit. Correct coolant circulation is essential for controlling engine temperature and preventing localised overheating.

Common signs of water-pump deterioration can include coolant leakage, bearing noise, excessive pulley or shaft movement, overheating, poor coolant circulation or visible corrosion around the pump assembly.

• Part type: Mechanical engine coolant water pump
• Material: Cast aluminium
• Impeller diameter: 71 mm
• Overall height: 103 mm
• Number of mounting bores: 3
• Number of impeller blades / vanes: 7
• Number of supplied gaskets / seals / seal rings: 3
• Pulley: Without belt pulley
• Operating mode: Mechanical
• Approximate weight: 1.07 kg
• EAN: 4059191232000
• Quantity supplied: 1 water pump with associated sealing components
• Brand: RIDEX
• Part No.: 1260W0122

Confirmed Mazda applications: MazSpec lists this pump across selected Mazda 121 I/II, multiple 323 BF/BG/BA/BJ variants, Demio DW, MX-3 EC and Xedos 6 CA petrol models. Exact engine, production-date and chassis-code fitment should be checked against the vehicle compatibility table and original pump before installation.

Common replacement reasons: Coolant leakage from the pump or sealing surfaces, noisy or rough pump bearings, excessive shaft movement, corrosion, damaged impeller blades or replacement during wider timing-belt or cooling-system servicing.

Related parts to inspect: Timing belt where applicable, timing-belt tensioner and guide pulleys, thermostat, coolant hoses, radiator, expansion tank, auxiliary belts and coolant condition. Replace contaminated or degraded coolant when carrying out cooling-system repairs.

Useful tools / consumables: Socket and spanner set, torque wrench, coolant drain container, gasket-surface cleaning equipment, correct-specification coolant and timing tools where the pump forms part of the engine timing-belt service procedure.

Difficulty guide: DIY Difficulty: Advanced on timing-belt-driven applications. Water-pump replacement may require removal and correct refitting of timing components, so the applicable workshop procedure and timing marks must be followed exactly.

Why RIDEX? RIDEX cooling-system components provide a cost-effective aftermarket servicing option manufactured to application-specific dimensions. This pump uses a cast-aluminium body, 71 mm impeller and seven-vane design and is supplied with three sealing components.

What’s in the box: One RIDEX 1260W0122 mechanical water pump with three gaskets / seals / sealing rings. Belt pulley, timing belt, tensioner, guide pulleys, coolant and installation tools are not included unless physically supplied.

Installation notes: Allow the engine to cool fully and drain the cooling system before dismantling. Where the pump is located within the timing drive, establish the correct engine timing position before removing timing components. Compare the replacement pump with the original, including all mounting bosses and accessory/tensioner mounting provisions. Clean the mating surface carefully, install the supplied sealing components correctly and tighten fasteners evenly to the applicable specifications. Refit and tension timing components correctly, refill with the specified coolant and bleed the cooling system thoroughly before checking for leakage and correct operating temperature.