Yamaha Timberwolf 230 owners, this is for you! This is a pack of 4 replacement oil filters from Road Passion, specifically for the Yamaha YFB250 Timberwolf 230 (models from 1992-1998) and the YFB250FW Timberwolf 4x4 230 (1994-2000). Always good to have a couple spares on hand for your next oil change. The filter itself is made with paper and metal construction, and it has a nitrile rubber gasket to ensure a good seal. The dimensions are: Height 1.9 inches (48.3mm), Outside Diameter 1.47 inches (37.5mm), and Inside Diameter 0.53 inches (13.5mm). It's a high-performance design meant to provide solid filtration to keep your engine running clean. It's compatible with part numbers HF143 and KN143. Road Passion focuses on auto and bike accessories, so these are built to be reliable. Just double-check the years and model of your ATV before ordering to make sure it's the right fit. Doing your own maintenance? Having a pack of these ready to go makes the job quicker and easier. Keep your Timberwolf happy with clean oil and a fresh filter.