Cómo comprar la bomba auxiliar de refrigerante 21581-5MP0A para Ariya y E-Tech

What Is the 21581-5MP0A Auxiliary Coolant Pump and Which Cars Use It?

The auxiliary (secondary) coolant pump circulates coolant independently of the main mechanical water pump — a function that becomes especially critical in hybrid and electric drivetrains where the internal combustion engine is not always running. The GMB 21581-5MP0A is an electrically driven pump supplied as a new unit and sold under Nissan's own part number.

Confirmed fitments include:

• Renault Megane E-Tech (BA0/1) 96–162 kW, 2022–2024
• Renault Scenic E-Tech (V) 162 kW
• Nissan Ariya (FE0) 66 kW, 2023–2025
• Nissan Qashqai J11 (2014–2021) 1.2 DIG-T / 2.0 petrol
• Nissan X-Trail T32 (2014–2022) 2.0 MR20DD / 2.5 QR25DE

Always verify by VIN before ordering, particularly for Renault Scenic E-Tech and Ariya variants, as trim and powertrain combinations can affect part compatibility.

You can view the listing and check current availability directly here: GMB 21581-5MP0A Auxiliary Coolant Pump at AutoParts EU.

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How to Identify the Part by OEM Number and Label Markings

When the pump arrives, confirm the following before installation:

• Primary OEM number stamped or printed on the unit: 21581-5MP0A
• GMB internal reference on the label: GEWP62A00
• The housing should carry the GMB logo and country-of-origin marking.
• Check that connector pin count and orientation match your vehicle's wiring harness before removing the old pump.

If your existing pump shows a different suffix (e.g., 21581-5MP0B), cross-reference carefully or contact the supplier — suffix revisions sometimes indicate a revised seal or connector design.

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Cross-Reference Numbers

No independent aftermarket cross-references have been confirmed for this specific number at the time of writing. The two known references for this part are:

| Reference Type | Number | |---|---| | Nissan OEM | 21581-5MP0A | | GMB part number | GEWP62A00 |

If you find a third-party number on a competitor listing, verify it maps back to both codes above before assuming compatibility.

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What to Check Before Buying

1. VIN confirmation — Ariya and Scenic E-Tech come in multiple powertrain variants; the pump may not be universal across all.
2. Coolant system condition — A failed auxiliary pump is sometimes a symptom of a contaminated or low coolant system. Flush and refill if in doubt. Browse the full cooling system parts range if you need hoses, thermostats, or coolant alongside the pump.
3. Connector and bracket compatibility — Compare the electrical connector and mounting bracket against your original unit before discarding it.
4. Part condition — This part is listed as new, not remanufactured. Confirm this on the product page if you have any doubt about the unit you receive.
5. Warranty and return policy — Confirm the supplier's return window in case a pre-installation inspection reveals a mismatch.

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FAQ

Is the 21581-5MP0A the same pump used in Renault and Nissan vehicles?

Yes. Renault and Nissan share platform and powertrain components across the Alliance, so this pump carries a Nissan OEM number but fits both brands' applicable models. Always verify with your VIN.

Can I install this pump myself, or does it need a specialist?

The pump is electrically driven and typically accessible, but bleeding the cooling system correctly after replacement usually requires a scan tool to activate the pump in service mode. Most home mechanics with intermediate experience can handle the physical swap; bleeding may need a workshop.

How do I know if my auxiliary coolant pump has failed?

Common signs include a coolant warning light, overheating during low-speed or stationary operation (more noticeable in E-Tech hybrids), or a fault code pointing to the auxiliary pump circuit. Confirm with a diagnostic scan before ordering.