aFe · New
aFe Apollo GT Series 4in 409SS Cat-Back 20-21 GM 2500/3500HD V8-6.6L L8T - Black Tip
MPN 49-44123-B · Store SKU afe49-44123-B
Supplier stock checked 11/7/2026, 10:14:21 AM UTC. Adding a part does not reserve it.
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Product details
This cat-back exhaust system is constructed of 4" mandrel-bent 409 stainless steel tubing for maximum strength and durability. This system features a high-flow 409 stainless steel muffler, producing a deep sound. Finishing off this exhaust system is a 5" diameter black 409 stainless steel intercooled clamp-on exhaust tip. The tip features an aFe POWER logo plate riveted on for a unique style. This system produces a deep sound unleashing all available horsepower and torque. Utilizing a factory style flange and hangers this system is a direct bolt-on system, which requires no cutting or modifications for a hassle-free installation. Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment. 100% MIG-Welded for race-proven strength and durability. Apollo GT Series 4 IN 409 Stainless Steel Cat-Back Exhaust System w/ Black Tip GM 2500/3500HD 20-26 V8-6.6L L8T Apollo GT Series 4 IN 409 Stainless Steel Cat-Back Exhaust System w/ Black Tip
Manufacturer fitment & guides
Check 49-44123-B against the manufacturer’s application information below.
Part-specific notes
- Emissions acknowledgement required before purchase.
- California Proposition 65: Y
