Exhaust› Exhaust Pipes, Systems and Components

aFe

aFe 20-23 GM 2500/3500HD V8 6.6L L8T Apollo GT Series 4in 409 SS Cat-Back Exhaust System

$1,023.34

SKU: A007 49-44123-P

In Stock
In Stock
Ships by Jun 20
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The aFe POWER Apollo GT Series cat-back exhaust system is designed for the GM 2500/3500HD 20-25 V8-6.6L L8T. It features a 4-inch mandrel-bent 409 stainless steel tubing, providing improved exhaust flow and increased horsepower and torque. The system includes a high-flow 409 stainless steel muffler for a deep, aggressive exhaust note and a polished 5-inch diameter 409 stainless steel intercooled clamp-on exhaust tip with an aFe POWER logo plate. It's a direct bolt-on system, utilizing factory-style flanges and hangers, requiring no cutting or modifications for a hassle-free installation. The system is 100% MIG-welded for strength and durability and is designed using computer-aided design technology for custom, high-tolerance factory fitment. This product does not require a CARB EO#.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandaFe
Part NumberA007 49-44123-P

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy