Description
Product Overview
The Briggs & Stratton 842921 oil filter is a high-performance replacement part engineered for BIG BLOCK engines in lawn mowers. Crafted from durable plastic, it features precise dimensions of 3.38 x 2.78 x 4 inches and a 3/4 inch-16 UNC thread size for secure installation. With an OEM part number of 842921 and a weight of 0.48 ounces, this filter ensures optimal oil flow and filtration efficiency. It is backed by Briggs & Stratton’s reputation for quality, making it a reliable choice for maintaining engine health and performance in outdoor power equipment.

Usage
This oil filter is specifically designed for use with Briggs & Stratton BIG BLOCK engines in residential and commercial lawn mowers. It is ideal for routine oil changes during seasonal maintenance, helping to remove contaminants and extend engine life. Homeowners, landscapers, and equipment technicians will find it essential for keeping mowers running smoothly in various conditions, from small yards to large properties. The vehicle-specific fit ensures compatibility and easy installation, reducing downtime and enhancing operational reliability.
Why Choose Us
Briggs & Stratton’s 842921 oil filter stands out due to its performance-grade materials and exact OEM specifications. The plastic construction resists corrosion and wear, while the precise threading prevents leaks and ensures a tight seal. As a trusted manufacturer, Briggs & Stratton provides rigorous testing and quality control, resulting in a filter that meets industry standards for durability and efficiency. Customers benefit from extended engine protection, reduced maintenance costs, and the assurance of a brand known for reliability in outdoor power equipment.
Key Features
- Durable plastic material for long-lasting performance and corrosion resistance
- Precision 3/4 inch-16 UNC thread size for secure, leak-free installation
- Optimized for BIG BLOCK engines to enhance filtration and engine protection
- Lightweight design at 0.48 ounces for easy handling and reduced strain
- OEM part number 842921 ensures exact fit and compatibility with Briggs & Stratton mowers
FAQ
What engines is this oil filter compatible with?
It is designed for Briggs & Stratton BIG BLOCK engines commonly found in lawn mowers. Check your engine model to ensure compatibility before purchase.
How often should I replace the oil filter?
Replace the oil filter during every oil change, typically every 50 hours of operation or at the start of each mowing season, to maintain optimal engine performance.
Is this filter made of plastic durable enough for outdoor use?
Yes, the performance-grade plastic is engineered to withstand outdoor conditions, including moisture and temperature variations, without degrading or corroding.
Can I use this filter on other small engine equipment?
It is specifically designed for lawn mowers with BIG BLOCK engines. Using it on incompatible equipment may not provide proper filtration and could void warranties.
What is the thread size and why is it important?
The 3/4 inch-16 UNC thread size ensures a tight, secure fit to prevent oil leaks and maintain consistent pressure, which is crucial for effective filtration.





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