Nissan Altima Fuel Pump 255lph In-Tank 1993 1994 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Laboratory testings at our factory indicated that this pump can perform equal or better and at the same time quieter than popular brands, and it is made with the standard measures. These fuel pumps flow very similar to other name brand pumps but they DO NOT have the loud, annoying whine of those pumps, and the performance of these fuel pumps are nearly silent when the vehicle is running, similar to a stock fuel pump. Our Fuel Pumps are improved with quality materials: Instead of carbon pumps we use ceramic pumps. -Instead of copper commutators we use carbon commutators. This way we can guarantee high work pressure and improve life time of our pumps. (Some factories making high free flow rate pumps use materials intended for low pressure fuel pumps. As a result, the pressure can decrease after some time). All our pumps are tested, and if they dont meet the quality requirements; they are not placed into the market. Therefore we can offer our clients a one year warranty. Works with Ethanol 13.5V Operating Pressure: 15 to 115 psi determined by fuel pressure regulator, 3.0 Bar