Rotary 2777. FITS BRIGGS & STRATTON MODELS: 290400, 290700, 294400, 294700, 303400, 303700, 350400, 350700, 400400, 401400, 402400, 404400, 422400 HORIZONTAL (L-HEAD) TWIN, HORZ & VERTICAL V-TWIN OHV VANGUARD.  Uses Pre-filter 2797.

BRIGGS & STRATTON 392642
BRIGGS & STRATTON 394018
BRIGGS & STRATTON 394018S
JOHN DEERE LG394018JD
OREGON 30-101
PRIME LINE 7-02228
PRIME LINE 7-02228-1
PRIME LINE 7-02228-10
STENS 100-131
SUNBELT B1SB2777

SR-1*