This genuine Briggs & Stratton 842921 oil filter is designed specifically for Vanguard Big Block engines, ensuring optimal engine protection and performance. It is a direct replacement for superseded part numbers 842921B, 842921GS, 841023, and 5101355X1, offering reliable filtration to extend engine life. Compatible and interchangeable with Briggs & Stratton filters 696854 and 492932s, this filter maintains consistent size and fitment, making it an expert choice for efficient oil filtration in demanding applications.