Air Filter used on Briggs & Stratton engine models: 283702, 283707, 284702, 284707, 286702, 286707, 287707, 287777, 289707, 28M707, 28N707, 28N777, 28P777, 28Q777, 28R707, 28S777, 28T707, 28U707, 28V707, 310707, 311777, 312777 and 313777.