PLM Power Driven H-Series Hood Exit Race Header 4-1 Megaphone – H22 / H22A / F20B / H2B

PLM Power Driven H-Series Hood Exit Race Header 4-1 Megaphone – H22 / H22A / F20B / H2B

SKU: PLM-HH-HOOD-HEADER-SHIELD

Built for all-out performance and aggressive track presence, the PLM Power Driven H-Series Hood Exit Race Header is engineered for serious racers and H-series enthusiasts who demand maximum exhaust flow and uncompromising power delivery.

Featuring a true 4-1 merge collector paired with a megaphone-style reverse cone outlet, this header is designed to optimize scavenging, increase high-RPM efficiency, and deliver the raw sound and performance expected from a dedicated race setup. The hood-exit configuration eliminates exhaust routing restrictions, creating the most direct path possible for exhaust gases.

This is a purpose-built motorsport component designed for off-road and competition use.

Performance Engineering

• True 4-1 merge collector design

• Reverse cone megaphone outlet for improved scavenging

• Maximized high-RPM power potential

• Direct hood-exit layout for unrestricted exhaust flow

• Two-piece design for easier installation

Premium Construction

• 304 brushed stainless steel

• 18-gauge stainless steel tubing

• Hand TIG welded for strength and durability

• Precision CNC-machined manifold flange

• Includes OEM-spec header gasket

• Includes exhaust heat shield trim

Engine Compatibility

• H22

• H22A

• F20B

• H-Series swaps

• H2B swaps

Vehicle Applications

• 1992–2000 Honda Civic (H-Series swap)

• 1993–1997 Honda Del Sol

• 1994–2001 Acura Integra

• 1988–1991 Honda CRX (aftermarket traction bar required)

• 1990–1993 Acura Integra (aftermarket traction bar required)

Installation Notes

• Half-core radiator with slim fan required

• Modification needed to retain A/C and power steering

• O2 sensor extension required

• Older EF and DA chassis require aftermarket traction bars

• Professional installation strongly recommended

Important Notice

• Off-road / race use only

• Not CARB legal

• Not intended for street use in emissions-regulated areas

If you’re building a serious H-series race car and want maximum airflow, aggressive styling, and true track-ready performance, the PLM Hood Exit 4-1 Megaphone Header delivers uncompromised results.