Add to Favorite Sellers. Piston Ring Set 4-Cylinder 3-1/4 Bore fits Minneapolis Moline BF BG Tractors. Quality Aftermarket Piston Ring Set Fits Minneapolis Moline BF, BG Tractors with 3-1/4 bore, (3) 0.125 compression rings, (1) 0.187 oil ring. On 3 ring pistons, discard one compression ring. Some with IXB3 Hercules Specifications 3-1/4 bore, (3) 0.125 compression rings, (1) 0.187 oil ring. 3-1/4 bore, (3) 0.125 compression rings, (1) 0.187 oil ring. Measure old rings before purchasing. Do not order by tractor model only. Due to the many different piston manufacturers, there can be as many as 8 different ring set available for one particular engine. To ensure you order the correct rings, we will need the following information: 1. Thickness of each ring 3. How many of each ring thickness per piston. We recommend verifying the proper fit for your application with a parts catalog or other reference documents. All aftermarket items have been hand selected by our team and are continuously monitored by a quality control department. Should a craftsmanship or fitment concern be identified, JJAgParts will be sure to work with our customers to stand behind our products. Be sure to check out our other listings for great aftermarket and NOS items! Don’t forget to leave us feedback and we will be sure to do the same! . Thank you for this opportunity to earn your business! Thank you for looking! We appreciate the opportunity to earn your business. Feel free to ask any questions you may have.