The applications listed are meant as a guide only. Be sure to measure original valve and compare dimensions before purchasing.
Vehicles with Mazda F4A-EL, F4EAT or GF4A-EL transmissions may have problems with low line rise or low Reverse boost. These problems can be caused by worn boost valve sleeves that allow EPC, TV boost or Reverse pressures to cross-leak or leak to exhaust. Sonnax boost valve kit 74846-01K restores hydraulic integrity.
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.