4243, 5421, 5428, 5428K, 590825, 591334, 594201, 796031, GY21435, MIU13038, MIU13963. For Briggs & Stratton Engines model 31A507, 31A607, 31A677, 31A707, 31A807, 31C707, 31E577, 31E607, 31E677, 31E777 and 31G777.
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