Fits selected model # 31A507, 31A607, 31A677, 31A707, 31C707, 31E577, 31E607,31E677, 31E777, 31G707, 31G777, 31N607, 31N707, 31P607, 31P677, 31P707, 31P777. 1 air filter + 1 pre filter + 2 fuel filter.
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