The Nissan fan 21481ET000 is a common, high-volume component with a large number of suppliers. It's a relatively popular aftermarket product on both international and domestic auto parts platforms, but it's not a highly sought-after, frequently out-of-stock, blockbuster cooling system.
Applicable Models and Market Share
The 21481-ET000 corresponds to the radiator fan assembly for the Nissan Sentra/Sylphy generation (B16, 2.0L, approximately 2007–2012). It's a part with precise compatibility but a limited range of models. In other words, it's not a universal fan that works across multiple platforms and engine displacements; rather, it's a direct replacement for this generation of Sentra. As long as the model, engine displacement, and year match, the installation compatibility is generally very high.
This generation of Sentra/B16 has a large market share in North America, Latin America, and parts of the Middle East, resulting in stable and long-term demand for related cooling parts in the overseas aftermarket.
Genuine Parts vs. Aftermarket Parts
Genuine Nissan parts are mostly sold on reputable parts websites and through authorized dealerships/4S stores. Reviews primarily focus on "guaranteed quality, higher price," and they are generally considered a hassle-free replacement option.
- Aftermarket parts (Chinese factory brands or unbranded neutral parts) are widely cited advantages by buyers on e-commerce and foreign trade platforms: ready to install upon arrival, plug-and-play functionality, and airflow and water temperature control "closer to the original," justifying the price.
- Several Chinese suppliers (specialized cooling fan manufacturers and comprehensive auto parts trading companies) have specifically listed the 21481-ET000 separately, usually with a 1-year warranty and neutral packaging available. This configuration also indicates that they expect a certain order volume, rather than considering it a slow-moving or unpopular component. - These suppliers also emphasize that they develop according to original factory dimensions and hole positions, and conduct road tests, vibration tests, and thermal shock tests to ensure the accuracy of installation and signal connection. This makes their compatibility rate relatively reliable compared to similar parts.
Aftermarket Demand Characteristics
- Cooling fans are consumable parts; collisions, aging, and high-temperature environments will all lead to replacement needs. The Sentra 07–12 batch of vehicles is currently in a concentrated repair period, so demand in the overseas independent aftermarket is relatively stable.
- However, compared to "legendary" vehicles (such as some Corollas and pickup trucks with larger global sales volumes), the 21481ET000 is considered a "good-selling, regular part," not a top-selling, high-volume model. Its price is relatively transparent, and competition is quite fierce.
- You can view 21481-ET000 as a specialized model with high compatibility with the Sentra B16 and manageable complaint points. The key is to choose a supplier with system certifications (such as ISO/TS), a clear one-year warranty, and actual export records to reduce risks related to noise and lifespan.
- When selecting a supplier, focus on: whether they have a long history of supplying Nissan cooling/condenser fans, whether they can also provide other related fan models in the B16 series, and whether they can meet the packaging and certification requirements of your target market (such as the Americas).
Reference：
(https://www.autopartsprime.com/nissan/motor-fan-assy-with-shroud/oe-21481et000)
(https://www.nissanpartsdeal.com/parts/nissan-motor-fan-ass~21481-et000.html)
(https://www.alibaba.com/product-detail/21481-ET000-21481ET000-High-Qual ity-Factory_1601375302266.html)
(https://www.nissanpartsdeal.com/oem-nissan-radiator_fan.html)
(https://eshopi.com/reviews/)
(https://www.torqen.uk/104-radiators-fans)
(https://www.youtube.com/watch?v=ojwjbMn0dlw)
(https://www.hyperdrive.co.nz/pages/fitment)
