New SeaDoo Voltage Regulator Rectifier 4-TEC 4-Stroke 278001969 278001581 Aftermarket regulator replacement, Plugs into existing wiring harness. Replaces Seadoo part numbers 278001581 and 278001969. Fits: 2005-2007 3D, 2006-2007, GTI 4-TEC 2005 GTI LE & 2005 GTI LE RFI Also fits: 2006 GTI SE, 2002-2007 GTX 4-Tec (All Versions), 2004-2007 RXP & 2005-2007 RXT Note: The stock OEM seadoo regulator is partially recessed mounted into the air intake. This after market replacement mounts on the outside of the air intake utilizing the exact same bolt hole centers. No modifications required, just apply silicone to the bottom of the regulator to seal the surface.