Is your Holley 4150 carburetor running rough, leaking, or just not performing like it used to? Instead of buying a whole new carb, give it a new lease on life with this complete rebuild kit. This kit is designed to replace the common wear parts in Holley 4150 models, specifically those with list numbers 4776, 4777, 4779, 4780, and 4781 (and works with many HP versions too). What's inside? You get the essentials: a 6.5 power valve, needle and seat assemblies, both a 30cc and 50cc accelerator pump (so you can choose), pump diaphragms, and a full set of quick-release, non-stick gaskets and O-rings. Everything you need for a thorough refresh to improve fuel flow, fix idle issues, and stop leaks. It's a direct replacement, making installation straightforward for anyone with some mechanical know-how. A cost-effective way to restore your carburetor's performance.
