4-1 Long-Tube Header for Honda H-Series Engines
Upgrade the naturally aspirated exhaust side of a compatible Honda H-series setup with this hand-TIG-welded 304 stainless ramhorn-style header. Four mandrel-bent primary tubes merge into a true 2.5-inch collector.
Specifications
- 304 stainless steel construction
- Hand TIG-welded assembly
- Long-tube 4-1 layout
- True 2.5-inch exhaust collector
- 18-gauge mandrel-bent tubing
- CNC-machined cylinder-head flange
- 0.38-inch-thick head flange
Package Includes
- 4-1 long-tube header
- Gasket
- Collector clamp
Listed Fitment
- Honda H22 VTEC engines
- Honda F20B VTEC engines
- Honda Prelude and H-series engine-swap applications with adequate chassis clearance
Important Installation Notes
- This is a naturally aspirated exhaust header, not a turbo manifold.
- Prelude installations require an aftermarket front crossmember or modification/notching of the existing crossmember for clearance.
- H-series swap fitment depends on the chassis, mounts, crossmember, oil pan, steering, transmission, and exhaust routing.
- Confirm cylinder-head flange, collector size, ground clearance, and downstream exhaust connection before ordering.
- Professional fabrication and installation are recommended.