Thorley Headers Headers - Shorty - Steel - Chrome - Ford - F-100 - F-150 - F-250 Pickup - Big Block - 352 - 360 - 390 - Pair

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Doug Thorley Headers

1180 W. Railroad Street St.
Corona, CA CA

Website: www.dougthorleyheaders.com
Phone: 951.739.5900

We are still a 100% American made product, which is produced at our factory in Corona, California. Our goal, as ever, is the maximizing of torque and horsepower gains and we will continue this time honored tradition as we move into the future. All of us at Doug Thorley Headers thank all of our customers for recognizing that our headers and exhaust systems, dollar for dollar, are the very best value in the industry.

Description for Doug Thorley Headers part# 203

Backed by 40-plus years of knowledge and experience Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. Their design configuration builds the most power across the rpm range which is great for everything from street/strip performance to towing to steep grades. To make these headers last Thorley made them out of durable 14-gauge mild steel with 3/8 in. thick flanges and 5/16 in. collector rings and topped them off with a good looking nickel chrome plated finish. To prevent leaks these headers have an O-ring welded into the flange in addition to the high-temperature gasket provided.