XS-POWER Honda Civic CRX Del Sol D15 D16 SOHC 4-2-1 Stainless Exhaust Header 1988-2000

Upgrade the exhaust system on your Honda D-Series with the XS-POWER 4-2-1 Stainless Steel Exhaust Header, designed for applicable D15 and D16 SOHC Honda Civic, CRX and Del Sol models.

The factory exhaust manifold is designed primarily around emissions, noise and mass-production requirements. This performance header uses a 4-2-1 runner configuration engineered to improve exhaust gas flow and reduce restriction as the exhaust exits the cylinder head.

Constructed from T304 stainless steel with TIG-welded joints and CNC-machined flanges, this header provides a durable performance upgrade for street, restoration and naturally aspirated D-Series builds.

The 4-2-1 configuration is particularly well suited for enthusiasts looking for improved mid-range exhaust efficiency, throttle response and a more performance-oriented exhaust system.

• 100% Brand New XS-POWER Exhaust Header
• Designed for Honda SOHC D-Series engines
• D15 / D16 compatible applications
• Performance-oriented 4-2-1 header design
• High-quality T304 stainless steel construction
• TIG-welded construction
• CNC-machined mounting flange
• Two O2 sensor bungs
• Approximately 1.75" inlet / primary collector section
• Approximately 2.00" outlet
• Designed to improve exhaust flow compared with the restrictive factory manifold
• Excellent upgrade for street and naturally aspirated D-Series builds
• Gasket included
• Installation hardware / accessories included as shown
• Designed as a bolt-on style replacement for applicable models

A 4-2-1 exhaust header combines the four cylinder exhaust runners into two secondary runners before merging them into a single outlet.

This layout is commonly used on street-performance Honda applications because it can provide a strong balance of exhaust velocity, scavenging and usable mid-range performance.

For D15 and D16 enthusiasts who want a performance exhaust upgrade without immediately converting to a turbocharger system, a quality 4-2-1 header is one of the most popular starting points.

FOR SOHC D-SERIES ENGINES ONLY.

• 1988-1991 Honda Civic – applicable D-Series SOHC models
• 1988-1991 Honda CRX / CR-X – applicable D-Series SOHC models
• 1992-1995 Honda Civic – applicable D15 / D16 SOHC models
• 1993-1997 Honda Del Sol – applicable D15 / D16 SOHC models
• 1996-2000 Honda Civic – applicable D15 / D16 SOHC models

Common engine families include Honda D15 and D16 SOHC engines.

IMPORTANT: Honda used several different exhaust and catalytic converter configurations throughout these model years. Some applications with the catalytic converter integrated into the original exhaust manifold may require additional exhaust-system changes.

Please compare your factory exhaust configuration and engine before ordering.

• Improved exhaust flow potential
• Reduced factory exhaust-manifold restriction
• Performance-oriented 4-2-1 runner configuration
• Improved exhaust scavenging potential
• Sharper throttle response when combined with appropriate supporting modifications
• Excellent foundation for naturally aspirated D15 / D16 performance builds
• Stainless construction provides excellent corrosion resistance and appearance

Actual horsepower and torque gains vary depending on engine condition, intake, exhaust system, catalytic converter, ECU calibration and other vehicle modifications.

• 1 × XS-POWER 4-2-1 Stainless Steel Exhaust Header
• Header / exhaust gasket
• Installation hardware and accessories shown in product photographs

Professional installation is highly recommended.

No installation instructions are included. Before installation, inspect all exhaust gaskets, oxygen sensors, mounting hardware, exhaust hangers and downstream exhaust components.

Proper alignment of the complete exhaust system is important to prevent unnecessary stress on the header and mounting flange.

Need replacement installation hardware or gaskets?

Honda D15 / D16 SOHC 4-2-1 Header Gasket & Installation Kit

Building a turbocharged D-Series instead?

Shop Honda D15 / D16 Turbo Manifolds

D16 T3/T4 Turbo Manifold & 38mm Wastegate

Will this fit a Honda B16 or B18 engine?
No. This header is intended for applicable Honda D-Series SOHC D15 and D16 engines.

Is this a turbo manifold?
No. This is a naturally aspirated performance exhaust header. If you are building a turbocharged D15 or D16, see our dedicated Honda D-Series turbo manifold collection.

Does it have O2 sensor ports?
Yes. The header is manufactured with two oxygen-sensor bung locations.

Is a gasket included?
Yes. A gasket and the accessories shown in the product photos are included.

Is this a 4-1 or 4-2-1 header?
This listing is for the 4-2-1 configuration.

Will it fit every 1988-2000 Civic?
No. Fitment is based on the D-Series SOHC engine and exhaust configuration. Models using different engines or certain manifold-mounted catalytic converter configurations may not be direct applications.

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