Match your camshaft with Procomp Electronics iron distributor gears. These small gears have a big impact on your engine's performance. Best suited for hydraulic or solid flat tappet camshafts, our iron distributor gears are the perfect mates for your cast iron cams. The right choice is critical for your engine and your wallet--choose Procomp Electronics iron distributor gears. They are manufactured from top-quality cast iron, and then nitrided for durability.