[REPLACEMENT RADIATOR CAP ] The radiator cap holds the coolant inside the radiator, but it also works as a two-way valve that keeps the right pressure inside so the radiator does it work correctly. Symptoms of a Bad Radiator Cap: air enters the system, low coolant level, coolant leaks, overflowing reservoir, overheating engine.[FITS THESE VEHICLES ] Honda, Acura - Accord, Civic, CRV, Elements, Fit, Odyssey, Pilot, Ridgeline, S2000, MDX, TL, RDX, RL, RLX, TLX, TSX, ZDX[REPLACES PART ] 19045-RAA-003, 19045RAA003, 19045 RAA 003 radiator cap.Professional, high quality style and meet or exceed all equipment performance replacement radiator cap. Constructed with premium materials for durability.[FRIENDLY NOTE ] It is extremely important to always make sure to allow the engine to cool down before removing the radiator cap, as removing the cap from a hot system can cause sudden coolant spray and severe burns.Manufacturer Part Number: 19045-RAA-003Compatible with the Following Vehicles for:Acura2013-2014 Acura ILX2007-2019 Acura MDX2007-2018 Acura RDX2006-2012 Acura RL2014-2019 Acura RLX2006-2014 Acura TL2015-2019 Acura TLX2005-2014 Acura TSX2010-2013 Acura ZDXHonda2005-2019 Honda Accord2010-2011 Honda Accord Crosstour2006-2015 Honda Civic2012-2015 Honda Crosstour2006-2018 Honda CR-V2007-2011 Honda Elements2015-2019 Honda Fit2016-2019 Honda HR-V2008-2019 Honda Odyssey2009-2019 Honda Pilot2009-2014 Honda Ridgeline2017-2019 Honda Ridgeline2006-2009 Honda S2000Material:metalcolour:SilverPackage Contents:2 x Radiator CapOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.