1. Simplicity Parts: Simplicity, LLC is the original manufacturer of Simplicity tractors and may have new or rebuilt gear box assemblies available for your model. You can contact them directly through their website or your local Simplicity dealer.
2. Online Marketplaces: Online marketplaces like eBay, Craigslist, and TractorHouse often have used or rebuilt gearboxes listed for various tractor models.
3. Salvage Yards: Check local salvage yards and agricultural equipment salvage companies that specialize in used tractor parts.
4. Used Parts Dealers: Some businesses specialize in selling used parts for tractors and other agricultural machinery. You can find these parts dealers online or through word-of-mouth recommendations.
5. Forums: Participate in tractor forums or online groups dedicated to Simplicity tractors or older farm equipment. Other enthusiasts might have information or leads on where to find the gear box assembly you need.
6. Local Tractor Clubs: Connect with local tractor clubs or associations. Members may have old stock parts or can recommend resources for finding the necessary gear box assembly.
Remember to ensure compatibility by confirming that the gear box assembly you find matches the specific model and year of your Simplicity 7111 tractor.