Radiator Cap for HB - Toyota Yaris Forums

paultyler_82 · 12-14-2006, 10:59 PM

"Performance" Radiator caps actually do put the radiator under a higher pressure, allowing for the coolant to do it's job more efficiently and allow the engine to run a bit cooler, depending on other mods, this can make a difference, but only if you're trying to squeeze as much as you possibly can out, and they're what... like 20-30 bucks?

Now for the original question, the TRD Japan part number for the radiator cap that fits the Vitz is P/N:16401-SP030 which is the same as the TRD US part number that you listed second, this is the one that most Toyotas and Lexuses use, the part number for the one you have is TRD JP P/N: 16401-SP002 which is used in some V6 and V8 Toyotas and Lexuses, you need the 18.5psi cap.

12-14-2006, 10:59 PM	#6
paultyler_82 View User's Garage Drives: 07 Meteorite Metallic Yaris LB Join Date: Jul 2006 Location: USA Posts: 441	"Performance" Radiator caps actually do put the radiator under a higher pressure, allowing for the coolant to do it's job more efficiently and allow the engine to run a bit cooler, depending on other mods, this can make a difference, but only if you're trying to squeeze as much as you possibly can out, and they're what... like 20-30 bucks? Now for the original question, the TRD Japan part number for the radiator cap that fits the Vitz is P/N:16401-SP030 which is the same as the TRD US part number that you listed second, this is the one that most Toyotas and Lexuses use, the part number for the one you have is TRD JP P/N: 16401-SP002 which is used in some V6 and V8 Toyotas and Lexuses, you need the 18.5psi cap.