Honda Civic EF / EG / EK & Acura Integra DC2 Billet Aluminum 0.65" Firewall Wiring Harness Grommet (Engine Swap / K-Swap / Wiring Pass-Through)

Cleanly route your engine wiring harness through the firewall on your Honda Civic or Acura Integra build with this premium billet aluminum 0.65" firewall grommet, precision CNC-machined from 6061-T6 aluminum for permanent durability and clean professional installation. Engine swap projects (K-swap, B-swap, H-swap, F-swap) on Honda EF / EG / EK Civic and DC2 Integra chassis universally require routing the engine harness through the firewall, and the factory rubber grommets are typically too soft, prone to wear, and create the cluttered "racecar wiring through cracked rubber" appearance that ruins otherwise clean engine bay builds. This billet aluminum grommet replaces the factory plastic/rubber pass-through with a clean machined aluminum hole that protects the harness from rubbing while delivering motorsport-grade aesthetics. The 0.65" smooth interior hole accepts standard engine harness diameters with proper clearance, while the anodized finish maintains its appearance over years of engine bay heat exposure.

Features:

• Premium 6061-T6 aluminum construction – CNC machined from aircraft-grade aluminum for exceptional lightness, strength, and durability
• Smooth 0.65" interior hole – allows clean harness pass-through while preventing wire rubbing that damages insulation over time
• Anti-rust anodized finish – delivers superior corrosion resistance for sustained underhood and weather exposure
• Direct firewall installation – fits factory firewall holes between 1.05" and 1.25" diameter
• Black anodized color – clean motorsport-grade aesthetic that complements any engine bay color theme
• Includes mounting hardware – complete kit ready for installation without additional sourcing
• Wide compatibility – fits the most popular Honda chassis platforms for engine swaps and harness routing projects
• Permanent solution – will not crack, deteriorate, or fail like factory rubber alternatives

Specifications:

• Condition: 100% Brand New
• Type: Firewall Wiring Harness Grommet
• Material: 6061-T6 Aircraft-Grade Billet Aluminum
• Construction: CNC Machined
• Surface Finish: Anodized
• Color: Black
• Inner Hole Diameter: 0.65" (16.5mm)
• Fits Factory Firewall Holes: 1.05" – 1.25" (26.7mm – 31.75mm)
• Item Weight: 0.1 kg
• Quantity: 1 grommet per pack
• Position: Firewall Pass-Through
• Purpose: Engine Harness Routing / Engine Swap Component

Fitment:

• Honda Civic EF (1988 – 1991)
• Honda Civic EG (1992 – 1995)
• Honda Civic EK (1996 – 2000)
• Acura Integra DC2 (1994 – 2001) – Including Type R
• Compatible with factory firewall holes between 1.05" and 1.25" diameter
• Suitable for engine swap projects (K-swap, B-swap, H-swap, F-swap, etc.) requiring clean harness firewall routing
• Confirm vehicle model and firewall hole size before ordering

Contents:

• 1x Billet Aluminum Firewall Grommet
• All necessary mounting hardware included

Important Compatibility Notes:

• Firewall hole size: This grommet is designed to cover factory firewall holes between 1.05" and 1.25" diameter. Verify your firewall hole size before ordering
• Larger harness compatibility: If you are using a thicker engine harness with integrated power wire (such as harnesses approximating KTH-ENG-204 specification), you may need to slightly enlarge the inner hole to clear the larger harness diameter
• Engine harness compatibility: Designed specifically for standard 0.65" diameter engine harnesses (such as harnesses approximating KTH-ENG-306 specification) – verify your harness diameter is compatible before installation

Benefits:

• Permanently solves the cluttered firewall harness pass-through problem on engine swap builds – critical for show-quality engine bay builds where clean wire routing matters
• Prevents engine harness damage from rubbing on factory firewall edges – the smooth machined interior protects insulation and prevents long-term wire wear
• 6061-T6 aluminum construction permanently outlasts factory rubber grommets that crack, harden, and fail with sustained heat exposure
• Anodized finish maintains its appearance over years of engine bay heat exposure without fading or corrosion
• Significantly improves engine bay aesthetics – clean machined aluminum replaces the cluttered factory rubber pass-through with motorsport-grade refinement
• Critical engine swap component – essential for any K-swap, B-swap, H-swap, or F-swap build where the engine harness routes through the factory firewall
• CNC machined precision ensures clean, professional installation that aligns properly with factory firewall geometry
• Affordable upgrade with significant aesthetic and functional impact – delivers genuine engine bay refinement at a low price point

Installation Notes:

• Firewall hole verification required: Measure your factory firewall hole diameter before ordering – this grommet covers holes between 1.05" and 1.25"
• Harness diameter verification: Confirm your engine harness fits through the 0.65" interior hole – larger harnesses may require slight enlargement of the grommet hole
• Disconnect the negative battery terminal before beginning installation to prevent electrical issues
• Carefully remove any existing factory rubber grommet or wiring pass-through – take note of harness routing before removal
• Clean the firewall hole edges thoroughly before installing the new grommet – any debris or rust will compromise proper sealing and aesthetic finish
• Position the aluminum grommet over the firewall hole and align with mounting hardware
• Carefully route the engine harness through the grommet's interior hole – avoid pinching, kinking, or stressing wires during routing
• Tighten mounting hardware to secure the grommet to the firewall – do not overtighten, which can damage the firewall sheet metal or distort the grommet
• Apply silicone sealant around the grommet edges if additional weather sealing is desired – particularly important for daily-driven vehicles
• Verify the harness routes cleanly through the grommet without contact with sharp edges
• Reconnect battery and test electrical systems before normal operation
• Inspect grommet and harness routing periodically for any signs of wear or loosening
• Professional installation recommended if you are unfamiliar with engine swap or wiring routing procedures
• If unsure about compatibility with your specific firewall hole size, harness diameter, or engine swap configuration, contact our team with your build details before ordering

Warranty:

• 12-month standard warranty from date of purchase
• Contact our support team for assistance with any issues