Rywire B/D-Series Mil-Spec Engine Harness w/Chassis Adapter — Fits 1988-1991 Honda Civic/CRX EF

SKU: RYWRY-B1-MILSPEC-EF
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Sale price$955.19
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Rywire

Rywire engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Rywire lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your EF Chassis with Rywire Mil-Spec Wiring

Transform your 1988-1991 Honda Civic or CRX EF chassis with the Rywire B/D-Series Mil-Spec Engine Harness. This premium wiring solution is engineered for enthusiasts performing B-series or D-series engine swaps, providing unparalleled reliability and performance. Designed with military-grade precision, it ensures every sensor and component receives clean, consistent power and signal, crucial for maximizing your engine's potential.

Robust & Reliable for Honda EF Builds

The Rywire Mil-Spec harness is constructed using high-temperature resistant wiring and sealed, robust connectors, guaranteeing exceptional durability in demanding environments. Its chassis-specific adapter simplifies the installation process, making it a true plug-and-play upgrade for your EF. Eliminate common electrical gremlins and achieve a professional, clutter-free engine bay. This harness is a vital component for any serious performance build, offering peace of mind and superior functionality.

  • Direct fit for 1988-1991 Honda Civic/CRX EF chassis
  • Compatible with Honda B-series and D-series engine swaps
  • Mil-spec (military specification) construction for extreme durability
  • High-temperature resistant, shielded wiring
  • Integrated chassis adapter for simplified installation
  • Improved signal integrity and electrical reliability
  • Enhances engine bay aesthetics and organization

Ensure your EF build performs flawlessly. Get your Rywire Mil-Spec Engine Harness today at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Rywire

Rywire engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Rywire lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your EF Chassis with Rywire Mil-Spec Wiring

Transform your 1988-1991 Honda Civic or CRX EF chassis with the Rywire B/D-Series Mil-Spec Engine Harness. This premium wiring solution is engineered for enthusiasts performing B-series or D-series engine swaps, providing unparalleled reliability and performance. Designed with military-grade precision, it ensures every sensor and component receives clean, consistent power and signal, crucial for maximizing your engine's potential.

Robust & Reliable for Honda EF Builds

The Rywire Mil-Spec harness is constructed using high-temperature resistant wiring and sealed, robust connectors, guaranteeing exceptional durability in demanding environments. Its chassis-specific adapter simplifies the installation process, making it a true plug-and-play upgrade for your EF. Eliminate common electrical gremlins and achieve a professional, clutter-free engine bay. This harness is a vital component for any serious performance build, offering peace of mind and superior functionality.

  • Direct fit for 1988-1991 Honda Civic/CRX EF chassis
  • Compatible with Honda B-series and D-series engine swaps
  • Mil-spec (military specification) construction for extreme durability
  • High-temperature resistant, shielded wiring
  • Integrated chassis adapter for simplified installation
  • Improved signal integrity and electrical reliability
  • Enhances engine bay aesthetics and organization

Ensure your EF build performs flawlessly. Get your Rywire Mil-Spec Engine Harness today at GGCRACING.

Product Details

Product Description

About Rywire

Rywire engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Rywire lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Optimize Your EF Chassis with Rywire Mil-Spec Wiring

Transform your 1988-1991 Honda Civic or CRX EF chassis with the Rywire B/D-Series Mil-Spec Engine Harness. This premium wiring solution is engineered for enthusiasts performing B-series or D-series engine swaps, providing unparalleled reliability and performance. Designed with military-grade precision, it ensures every sensor and component receives clean, consistent power and signal, crucial for maximizing your engine's potential.

Robust & Reliable for Honda EF Builds

The Rywire Mil-Spec harness is constructed using high-temperature resistant wiring and sealed, robust connectors, guaranteeing exceptional durability in demanding environments. Its chassis-specific adapter simplifies the installation process, making it a true plug-and-play upgrade for your EF. Eliminate common electrical gremlins and achieve a professional, clutter-free engine bay. This harness is a vital component for any serious performance build, offering peace of mind and superior functionality.

  • Direct fit for 1988-1991 Honda Civic/CRX EF chassis
  • Compatible with Honda B-series and D-series engine swaps
  • Mil-spec (military specification) construction for extreme durability
  • High-temperature resistant, shielded wiring
  • Integrated chassis adapter for simplified installation
  • Improved signal integrity and electrical reliability
  • Enhances engine bay aesthetics and organization

Ensure your EF build performs flawlessly. Get your Rywire Mil-Spec Engine Harness today at GGCRACING.

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