aFe Twisted Steel Headers Up-Pipes & Down-Pipe 2011 - 2015 Silverado / Sierra 2500 / 3500 HD V8-6.6L Duramax (Diesel) LML
48-34139
Upgrade or replace your LML’s manifolds, up-pipes, and down-pipe with this all-in-one, bolt-on kit, designed to open up your exhaust flow for maximum performance.
- Includes Heavy-Duty Gauge, .120 Wall Headers, .120 Wall Up-Pipes, and .065 Wall Down-Pipe
- Brushed Finish 304 Stainless Steel Construction
- Optimized Tube Lengths, Smooth Transition Bends, and Mitered Collectors Improve Flow
- Includes 1/8" NPT and M14 Exhaust Gas Temperature Ports
- Factory Style Flanges, Straightforward Connections, and Quality Hardware for a Leak-Free Seal
Stainless Steel Construction:
The headers are constructed out of heavy duty gauge, mandrel-bent 304 stainless steel tubing with a .120" wall for strength and durability. The up-pipes and down-pipe are constructed out of 2" and 3" mandrel-bent 304 brush finished stainless steel tubing.
Optimized Tube Lengths:
Tube lengths and mitered collectors are optimized for true pulse control technology which improves flow and performance across the power band.
Heavy-Duty Flanges:
A CNC-machined v-band inlet flange and heavy-duty outlet flange provide a secure, leak-free seal.
EGT Ports:
Two exhaust gas temperature (EGT) ports are provided with this system. A 1/8” NPT EGT probe port is incorporated into the driver’s side manifold and a M14x1.5 port in the down pipe. This allows for easy installation of sensors, gauges or testing equipment.
4" Interlock Flex Pipes:
The up-pipes utilizes heavy duty 4" flex tubes with internal interlock liners.
Retains EGR Flange:
This system retains the EGR flange.
Factory Mounting Locations:
These headers utilize factory locations making it a true bolt-on system, no cutting or drilling required and includes all necessary hardware for a hassle-free installation.
Fitment Note:
This item will not fit models manufactured after July 2014 equipped with a 3 bolt flanged down-pipe.
Vehicle Applications
Year | Make | Model | Submodel | Fuel | Engine |
---|---|---|---|---|---|
2011-2015 | Chevrolet | Silverado 2500 HD | Duramax | Diesel | V8-6.6L (td) |
2011-2015 | Chevrolet | Silverado 3500 HD | Duramax | Diesel | V8-6.6L (td) |
2011-2015 | GMC | Sierra 2500 HD | Duramax | Diesel | V8-6.6L (td) |
2011-2015 | GMC | Sierra 3500 HD | Duramax | Diesel | V8-6.6L (td) |
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