If you’ve been working Allis Chalmers equipment for any length of time, you know how important it is to keep clean oil flowing through that engine. Dirty oil is the fastest way to turn a reliable workhorse into an expensive paperweight. This Baldwin BT440 lube filter is what stands between your engine and all the dirt, metal particles, and combustion byproducts that want to destroy those moving parts from the inside out.
What You’re Getting
- Full-flow spin-on design with 4.25-inch diameter and 7.34-inch length for maximum filtration capacity
- 1-16 thread size threads on smoothly for a secure, leak-free seal
- High-efficiency filter media captures contaminants down to microscopic levels
- Heavy-duty construction handles engine oil pressure and temperature swings
- Direct Baldwin replacement – same quality as what came on your machine originally
Built for Real Farm Work
This filter is engineered specifically for Allis Chalmers engines and equipment where reliable lubrication is critical. Whether you’re running an older D-series tractor through long days of fieldwork, operating industrial equipment that can’t afford downtime, or maintaining vintage machines that need proper filtration to keep running strong, this is the filter that keeps your engine protected.
Made to Last
Baldwin has been making filters for farm equipment since before most of us were born, and they know what it takes to handle the demands of agricultural work. This filter uses quality materials and construction that won’t fail when your engine needs protection most – during those long days when you’re pushing hard to get crops in or equipment maintained.
Good to Know
Installation is straightforward – just spin off the old filter and spin on the new one, making sure to hand-tighten plus another 3/4 turn once the gasket contacts the mounting surface. Always fill the new filter about halfway with clean oil before installing to reduce dry-start time, and remember to reset your service hour meter after the oil change.








