MAP Subaru 4-1 Equal Length Header (04 - 18 STi)
New equal length turbo manifold for your EJ25 series Subaru! Made from top quality 304 stainless this header will be the last one you will ever need to buy. Efficient and proven on power, and with a lifetime warranty... How can you go wrong?
Ceramic Coating: Our advanced ceramic coating option helps control heat soak. The piece is coated in a thermal barrier (available in black only) that looks great and protect wires and hoses from heat. Please note the coating may need some extra "curing" to prevent flaking after installation. Please allow the part to heat up during normal driving or idling and then completely cool before putting it through it's paces.
Features
- 100% Made In The USA
- 4-1 design for increased efficiency
- Crafted from 304 USA-Made stainless steel
- Utilizes a merge collector center cone to improve flow
- 1/2 inch thick up-pipe flange to prevent warping
- Flat sanded flanges to ensure a leak free design
- Four 1.750 inch runners merge to a 2.250 up tube
- MAP Header vs AP EL results provided by Junior2JZ