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Buy Nissan 21430AX30A — auto part
5 offers · from 21,16 $

Nissan21430AX30A

Cap-Reservoir Tank

Best offer4.9
21 $per item
In stock
Delivery to —13–15 days
Selling auto parts since 20092 own warehouses · Dubai and EuropeMore about Partoza
RatingStockDeliveryPrice
Cap-Reservoir Tank
4.8
224 pcs.
20–22 days
21 $
4.9
18 pcs.
13–15 days
21 $
4.8
76 pcs.
15–17 days
23 $

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15 $
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30–32 days
15 $

Fitment

1 make · 29 models · 245 trims

Reference list only. Before ordering, verify the article number by VIN or contact a manager.

Direct from suppliers and manufacturersDelivery to 60+ countriesAbout company and warehouses

Nissan 21430AX30A — Cap-Reservoir Tank

Overview

Coolant expansion tank cap Nissan 21430AX30A regulates operational pressure within the engine cooling system. The pressure relief valve opens at 0.9 bar (88 kPa) to discharge excess coolant into the expansion tank, protecting radiator cores, hoses, and water pump seals from over-pressurisation. An internal vacuum valve allows air return during coolant contraction, preventing hose collapse. Constructed from heat-resistant thermoplastic with a stainless steel spring assembly, the cap incorporates EPDM rubber seals resistant to ethylene glycol and temperatures up to 130 °C. Key dimensions include a 45 mm outer thread diameter and 28 mm valve plunge depth. OEM cross-reference numbers include 21430-AX30A, 21430-AX600, and 21430-AX300.

This part fits Nissan Micra K12 (2002–2010), Nissan Note E11 (2006–2013), Nissan Tiida C11 (2004–2012), and Nissan Cube Z11 (2002–2008) fitted with 1.2, 1.4, 1.5, and 1.6 litre petrol engines. Replacement is required when experiencing coolant loss, system over-pressurisation, stuck internal relief valves, perishing EPDM rubber seals, or cracked plastic threads. Faulty cap operation causes premature coolant boiling, overheating, and air lock formation inside the cylinder block. The genuine factory cap guarantees precise fitment to the original expansion tank neck without coolant leakage or thread binding.

Nissan 21430AX30A — cap-reservoir tank. 5 offers available, starting from 21.16 USD.

Specifications

Manufacturer — Nissan. Article number — 21430AX30A. Name — Cap-Reservoir Tank. Offers — 5. From — 21.16 USD.

Compatible cross-references

Replacements and analogues: DAYCO DRC051, MOTORAD T63, STC T403563, TRISCAN 861020, VAICO V460436.

How to order on Partoza

Enter brand Nissan and article 21430AX30A in search — you'll see every available offer from verified suppliers with prices and delivery time to your city. Pick one and place the order. Not sure about fitment? Check applicability by VIN in the section above or contact our support.