If your pump is pusation pump, you will need it. If it is rotation pump (very rare), it may work without.
It does not need to be those, but idea is important. They must be between engine and sensor on both input and return lines.
If your pump is pusation pump, you will need it. If it is rotation pump (very rare), it may work without.
It does not need to be those, but idea is important. They must be between engine and sensor on both input and return lines.