Magnaflow · New
MagnaFlow Sys CB 66-72 GM CST-10/CST-20
MPN 16643 · Store SKU mag16643
Supplier stock checked 11/7/2026, 6:42:03 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
The MagnaFlow Street Series Crossmember-Back Performance Exhaust System 16643 brings enhanced engine sound and dyno-proven performance to your 3.8L, 4.1L, 4.3L, 4.6L, 4.8L, 5.0L, 5.3L, 5.7L, 6.5L, 6.6L 1960-1972 Chevrolet with a healthy helping of our deep, resonant signature exhaust note at Aggressive exterior and Moderate interior sound levels. Thanks to its durable, corrosion resistant stainless steel design, this Chevrolet exhaust system will handle whatever tarmac you decide to leave your mark on. This performance exhaust kit features a crossmember-back layout designed to replace your Chevrolet's exhaust system from the crossmember on back. With its fast-flowing, mandrel bent 2.5in. main piping and 2 Straight-Through mufflers ending in a Dual Split Rear Behind Rear Tires exit that you can enhance with tips of your choosing, your muscle car will be sounding as awesome as it looks. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 16643 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow's limited lifetime construction warranty. Magnaflow Street Series Stainless Crossmember-Back System Street Series Stainless Crossmember-Back System Street Series System
Manufacturer fitment & guides
Check 16643 against the manufacturer’s application information below.
Part-specific notes
- Emissions acknowledgement required before purchase.
