If you've noticed your tractor losing power in dusty conditions or your inner air filter needing replacement too often, there's a good chance your outer filter element isn't doing its job anymore. This outer air filter catches the big stuff—dirt clods, chaff, and debris—before it ever reaches your inner filter, helping both parts do their job better and keeping your engine running strong through the long haul. What You're Getting Primary filtration that traps large particles while maintaining proper airflow to your engine Two-stage system design works with inner filter 10237 for complete engine protection Heavy-duty pleated construction maximizes dirt-holding capacity without restricting breathing Direct replacement that fits properly with existing air cleaner housing and seals Quality filter media that handles the punishment of agricultural and industrial work Built for Real Farm Work This outer filter works across vintage Massey Ferguson 100 series tractors like the 135, 165, 168, 175, 178, 185, and 188—machines that are still earning their keep on farms today. It also fits a wide range of Leyland industrial tractors and equipment powered by Perkins engines. Whether you're running hay equipment, doing loader work, or handling general farm chores, these tractors work in conditions that would choke most engines without proper filtration. Made to Last Farm work means dust, and this filter is built to handle it. The pleated media provides maximum surface area in the space available, holding more dirt before airflow becomes restricted. Construction is tough enough to resist collapse from engine vacuum while maintaining filtration efficiency even when the outer surface gets loaded with dirt. Installation Notes This outer filter works as part of a two-stage system—always pair it with the inner filter for complete protection. Don't try to clean and reuse paper filters, as washing or compressed air usually damages the media. Check both filters more frequently during dusty seasons like harvest or cultivation when your filtration system really earns its keep.