Briggs & Stratton Dipstick/tube Assy 790443 Genuine OEM. This is a Genuine OEM Briggs & Stratton part. This dipstick and tube assembly (part number 790443) is for lawn and garden equipment engines. Dipstick and tube assembly 790443 attaches to the engine block and measures the amount of oil in the engine s... - Briggs & Stratton Dipstick/tube Assy 790443 Genuine OEM.