Summit Racing Equipment is online and sells remanufactured 4.3 engines. Its selection includes various Chevrolet performance 4.3 engines, as well as ATK and First Mate marine engines. KARL Chevrolet is an online source, selling versions of the 4.3 engine for cars and trucks from 1987 to 2013 models.
Chevrolet Engines & Motors sells rebuilt 4.3 engines. It advertises on its site that it is the largest Chevy crate engine re-manufacturer in North America. The site has a search tool for year and model of vehicle, which returns a list of available engines, including the 4.3 liter.
Ebay lists rebuilt 4.3 engines, though availability can vary due to listing/auction format of the site. Another source is local auto parts stores. Advance Auto Parts sells rebuilt Spartan/ATK 4.3 Chevrolet engines. They are advertised as original equipment manufacturer quality. The Advance website notes that the engine is not available for online ordering and urges buyers to visit their local store. O'Reilly Auto Parts stores sell PowerTorque remanufactured 4.3 liter engines. AutoZone is a reseller of rebuilt 4.3 engines built by Surefire Engines.Learn more about Engine