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Twisted Steel Tri-Y Long Tube Header & Mid Pipe 304 Stainless Steel w/ Cat

Cadillac CTS-V 09-15 V8-6.2L (sc)
Part Number: 48-34125-YC

MSRP: $3,155.25


  • Dyno-Proven Gains up to +23 HP and +31 Lbs. x Ft. TQ (Street Version Tested on 2009 Cadillac CTS-V V8-6.2L with aFe Exhaust PN: 49-34063)
  • 4-2-1 Tri-Y Designed Headers w/ 1-7/8 IN Primary Tubing, 2-1/8 IN Secondary Tubes, and 3 IN Collector
  • Optimized Tube Lengths Improve Flow and Performance
  • Includes Dual High-Flow, Metallic, 400 CPSI, Stainless-Steel Catalytic Converters
  • 3 IN Inlet/2-1/2 IN Outlet Connection Pipes Mount Directly to OE Mounting Locations
  • 3 IN Inlet/3 IN Outlet Connection Pipes Mount Directly to aFe Exhaust (PN: 49-34063)
Read More

Tri-Y Design:
Paired opposite firing cylinders with equal, specifically tuned primary lengths maximizes scavenging and increases torque throughout the power band.

High-Flow Cats:
This system includes dual, hi-flow, metallic, 400 cell per square inch, stainless steel catalytic converters for maximum flow and performance.

304 Stainless Steel Laser Cut Header Flanges:
High quality laser cut 304 stainless steel header flanges provides superior sealing at the head surface.

O2 Sensor:
Includes an additional bung for either a wide-band O2 gauge or auxiliary instrumentation.

304 Stainless Steel Tubing:
High grade stainless tubing with a uniform brushed finish provides a beautiful look and high resistance to corrosion.

100% TIG-Welded by certified craftsmen for race proven strength and durability. TIG-Welding provides the strongest welds reducing stress cracks.

V-Band Connection:
Machined flanges and USA made stainless v-band clamps provide simple to install leak-free joints.

Factory Mounting Locations:
3 IN Inlet/2-1/2 IN Outlet connection pipes mount directly to OE mounting locations.

Full 3 IN Systems:
3 IN Inlet/3 IN Outlet connection pipes mount directly to the aFe POWER performance Cat-Back P/N: 49-34063 for a full 3 IN system.

Mandrel Bent Tubing:
This system is constructed of mandrel bent, stainless steel brushed tubing for maximum performance, corrosion resistance and strength eliminating cracking.

Race Disclaimer:
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. To complete the purchase of this item, aFe POWER competition acknowledgement/liability release form must be filled out and submitted.

All aFe POWER headers and connection pipes are engineered and manufactured in our Corona, California facility.


Vehicle Applications

Year Make Model SubModel Engine Fuel
2009-2015Cadillac CTS-V V8 6.2L (sc) Gas
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MSRP: $3,155.25

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