John Deere tractor owners, this distributor drive gear kit could be the solution to your ignition timing issues! This comprehensive kit fits multiple John Deere models including the 1010, 1020, 1520, 2010, 2020, 2030, 2510, 2520, and 4030 tractors with Prestolite distributors. The replacement part numbers include AT21722, AT21721, AT21941, T16578, 90-597 and several Prestolite numbers, so you can be confident it's the right match for your equipment. JJAgParts is an American family business that hand-selects their components, and their quality monitoring gives you assurance that this isn't some questionable off-brand part. Installation is straightforward if you're familiar with tractor mechanics, but as always, double-check your specific model and existing part numbers before ordering to ensure perfect compatibility. The gear itself appears well-machined with clean teeth and proper hardening - this isn't a cheap casting that will wear out quickly. I've used JJAgParts components before and found their quality consistent and reliable for agricultural applications. Having the correct distributor drive gear is crucial for proper ignition timing and overall engine performance, and this kit delivers the precision needed for smooth operation. The company stands behind their products and will work with you if any fitment or craftsmanship issues arise, which is reassuring when ordering mechanical parts online. Whether you're doing routine maintenance or troubleshooting specific engine performance issues, having the right replacement parts on hand saves downtime and frustration. This kit represents that smart approach to equipment maintenance - quality components from a reputable supplier that understand agricultural machinery needs. If your John Deere tractor needs distributor work, this gear kit provides a reliable solution that should restore proper timing and performance for seasons to come.
Free 30-day returns 
Free 30-day returns
