AEM 25-109BK High Volume Black Fuel Rail for Honda D16Y7 and D16Y8 Engines

AEM High Volume fuel rails feature a 1/2-inch fuel bore to support fuel flow for applications up to 1,000 horsepower. This large bore also dampens backpressure pulses created by larger injectors and works perfectly with stock injector sizes. An additional 1/8th NPT port is included to accommodate a nitrous set up or fuel pressure gauge. A custom fuel line fitting is included for the factory fuel line, and in most cases the ends of each rail are pre tapped to accept -6 AN or 9/16"x18 fittings for users who want to use custom fuel lines. High Volume Fuel Rail, Black Anodized, Fits Honda D16Y7 and D16Y8 engines

• No additional parts required for installation - installs with factory fuel line using supplied fitting
• Comprehensive installation instructions, hardware, fittings and injector O-rings included
• 1/2 inch bore dampens backpressure pulses from larger fuel injectors
• 1/8 NPT port included for nitrous pick up or fuel pressure gauge
• Complete hardware, fittings and injector O-rings included
• Works with factory fuel line or custom fuel lines
• Specifically engineered for each application
• Pre-tapped for -6 AN or 9/16"x 18 fittings
• Supports fuel flow up to 1,000 horsepower
• Black anodizing with laser engraving
• CNC Machined from billet aluminum

Upgrade fuel delivery on compatible Honda applications with the AEM 25-109BK High Volume Fuel Rail. CNC-machined from billet aluminum and finished with durable black anodizing and laser engraving, this fuel rail is engineered for reliable performance in modified street, competition, and forced-induction fuel systems. Its large 1/2-inch fuel bore supports fuel flow for applications producing up to 1,000 horsepower while helping dampen pressure pulses created by larger fuel injectors.

The AEM 25-109BK is designed for Honda D16Y7 and D16Y8 engines and installs using the factory fuel line with the supplied custom fitting, so additional installation parts are generally not required. The rail also accommodates custom fuel systems, with pre-tapped ends designed for -6 AN or 9/16-inch by 18 fittings where applicable. An additional 1/8-inch NPT port provides a convenient connection point for a fuel pressure gauge or nitrous system pickup.

Comprehensive installation instructions, mounting hardware, fuel fittings, and injector O-rings are included. The fuel rail is intended for automotive applications and is not CARB approved. Verify engine configuration, injector compatibility, and local emissions requirements before installation. Fitment includes select 1996–1998 Honda Civic models and 1996–1997 Honda Del Sol applications equipped with compatible D16Y7 or D16Y8 engines.

Key Product Specifications & Technical Data

• Brand: AEM
• Part Number: 25-109BK
• Product Type: High volume fuel rail
• Finish: Black anodized aluminum
• Fuel Bore: 1/2 inch
• Auxiliary Port: 1/8-inch NPT
• Fitting Compatibility: -6 AN or 9/16-inch by 18 fittings
• Application Capacity: Supports fuel flow for applications up to 1,000 horsepower

What's Included

• AEM 25-109BK fuel rail
• Factory fuel line fitting
• Mounting hardware
• Fuel fittings
• Injector O-rings
• Installation instructions

Features:

• High-volume fuel delivery: The 1/2-inch fuel bore supports fuel flow for applications up to 1,000 horsepower.
• Pressure pulse control: The large internal bore helps dampen backpressure pulses associated with larger fuel injectors while remaining compatible with stock injector sizes.
• Flexible fuel system connections: Use the supplied fitting with the factory fuel line or configure custom fuel lines through the pre-tapped rail ends.
• Integrated accessory port: The 1/8-inch NPT port supports installation of a fuel pressure gauge or nitrous system pickup.

Fitments:
1996 Honda Civic CX
1996 Honda Civic DX
1996 Honda Civic EX
1996 Honda Civic HX
1996 Honda Civic LX
1996 Honda Civic del Sol S
1996 Honda Civic del Sol Si
1997 Honda Civic CX
1997 Honda Civic DX
1997 Honda Civic EX
1997 Honda Civic HX
1997 Honda Civic LX
1997 Honda Civic del Sol S
1997 Honda Civic del Sol Si
1998 Honda Civic CX
1998 Honda Civic DX
1998 Honda Civic EX
1998 Honda Civic HX
1998 Honda Civic LX
1999 Honda Civic CX
1999 Honda Civic DX
1999 Honda Civic EX
1999 Honda Civic HX
1999 Honda Civic LX
1999 Honda Civic Value Package
2000 Honda Civic CX
2000 Honda Civic DX
2000 Honda Civic EX
2000 Honda Civic HX
2000 Honda Civic LX

Air Freight Prohibited: false
Not Carb Approved: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: true
Regular Stock: t
Units Per Sku: 1