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Available as
Genuine (OEM)
New original part from the vehicle maker
- Toyota GenuineMaker's part number16100-3959540.6 USD
Aftermarket
New part from an independent brand
Equivalent parts from other brands, each shown with that brand's own part number. The expert confirms the fit for your car.
- AisinAisin part numberWPT203V43.3 USD
- Brand confirmed on quote43.6 USD
- GMBGMB part numberGWT163A49.1 USD
- GMBGMB part numberGWT163AJ50.7 USD
Reference prices as of Oct 18, 2026.
Part numbers
The maker's number, and the numbers other brands give their equivalent of this part. You can search by any of them.
OEMLexus16100-39595InterchangeGWT-163AEquivalentAisinWPT203VEquivalentGMBGWT163AJ
Fits these vehicles
LexusIS2014–8AR-FTSGCC
LexusNX AZ102015–20218AR-FTSGCC
LexusRX AL202016–20228AR-FTSGCC
Variants differ by market, trim and year: send your VIN with the request and the expert matches the exact part.
About this part
Water pump for the Lexus NX AZ10 (2015–2021) — part of the engine cooling system. Listed fitment: Lexus NX AZ10 (2015–2021); Lexus RX AL20 (2016–2022). Part number 16100-39595.






