B Series Bisi Style Header V2 4-1 Merge Collector B18 B20
*** IMPORTANT NOTE: Order processing can take up to 1-2 business days. Shipping timeframes start after the order processing has been completed. ***
- B-Series header features a true 4-1 merge collector for more equal exhaust flow.
- This header delivers the best peak horsepower gains while utilizing a 2-piece design.
- This is ideal for all forms of competition; Autocross, Drag racing and road racing.
- Recommended for 1.8L - 2.0L engine displacements.
- Made of 304 Brushed Stainless steel
- True 2.65 (ID)inch collector outlet
- Hand TIG Welded CNC-ed machined manifold flange
- One year warranty 18G on the 304 S/S.
- Measured at .049" to .050" OEM spec header gasket
- OEM spec donut gasket
- Two piece design Half core radiator must be used
