Boyesen Supercooler water pump cover and impeller kit — Yamaha WR 426 F 2001–2002, Yamaha WR 450 F 2003–2015 and more

Description

Boyesen Supercooler water pump cover and impeller kit for Yamaha WR 426 F 2001–2002, Yamaha WR 450 F 2003–2015, Yamaha YFZ 450 2004–2013, Yamaha YFZ 450 BB 2006–2007, Yamaha YFZ 450 LE 2004, Yamaha YFZ 450 RSE 2009–2013, Yamaha YFZ 450 SE 2005–2007, Yamaha YFZ 450 SP 2006–2008, Yamaha YFZ 450 SP2 2008, Yamaha YFZ 450 SPE2 2007, Yamaha YZ 426 F 2000–2002, Yamaha YZ 450 F 2003–2009. Investment-cast aluminium water pump cover with a larger, patented nautilus-style impeller — the pump moves more coolant at all rpm, so the engine runs cooler and at a steadier temperature. Most useful for enduro riders in slow terrain where engines overheat easily.