The MagnaFlow 16842 is a Street Series crossmember-back exhaust kit for the C3 Corvette small-block. It covers the 1968 Corvette with the 5.3L engine and the 1969-1973 Corvette with the 5.7L engine. The factory builds it with robotic CNC fabrication, and the company stands behind its construction under a limited lifetime warranty. The kit also ships with two 2.5-inch round turndown tips, and the manufacturer notes that the parts are made in the USA.
The reason to pick this kit over a stock system or a bargain generic is the combination of build quality and sound tuning. The manufacturer rates the tone at Moderate exterior and Mild interior sound levels, so the goal is a deeper note under throttle without a harsh cabin drone. The tips are unresonated, which keeps the tailpipe sound clean. The manufacturer describes the kit as dyno-proven, but I could not find published horsepower or torque figures, so buyers should expect a sound and flow upgrade rather than a quoted gain. Owners searching for a 68 Corvette 327 crossmember-back exhaust or a C3 350 satin turndown setup should note the warranty as a real long-term value point.
Confirm the fit before ordering, because the listed application depends on both model year and engine. Since this is a crossmember-back design, the install begins at the crossmember and runs rearward, which means the front portion of the factory system stays in place. Hanger placement and clamp hardware details could not be confirmed directly from the manufacturer during research, so review the included instructions before you start. Plan for safe lift or jack-stand support when working under the car.
The manufacturer lists the 1968 Corvette with the 5.3L engine and the 1969-1973 Corvette with the 5.7L engine. Product titles in the market use a 68-69 shorthand, but the manufacturer's own listing covers the wider range.
The manufacturer rates it at Moderate exterior and Mild interior sound levels, which points to a deeper tone that stays tolerable on highway trips.
The manufacturer backs the kit with a limited lifetime construction warranty.