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

…
$49.99 $54.00 Save $4.01
  • Fitment verified for YOUR exact year/model/trim
  • Not sure? Call +1 772-277-2495 for a real specialist to help you order
  • Got install questions? Text a tech who's actually installed this part before, even after it arrives
In Stock - Usually ships in 3-5 Days

Select your exact model and see if this part fits

K2 Industries  |  SKU: 1005010693847594

Wrong fit or arrives damaged? Free replacement or refund

30,000+ Happy Customers30,000+ Happy Customers
30-Day Returns30-Day Returns
One Year WarrantyOne Year Warranty
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Details

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

Fitment

Our Guarantee

Warranty Assurance:

At K2 Industries, your satisfaction is our priority, and we stand behind the quality of our products. Here's a brief overview of our warranty:

Defect Coverage:
If you find a defect after receiving your order, get in touch with us. We're committed to resolving the issue, whether it involves a replacement, repair, or refund.

Installation Note:
Please inspect your purchase before installation. Unfortunately, damages post-installation are not covered, so ensure everything looks good beforehand.

Claims Made Simple:
Need to make a claim? Reach out to us at support@k2-industries.com. We're here to assist you. Just keep your original packaging and documentation handy.

Your Satisfaction Matters:
Your trust in K2 Industries is appreciated. We're dedicated to ensuring your satisfaction with our quality automotive parts.

Shipping & Returns

Shipping Information:

At K2 Industries, we strive to provide a seamless and efficient shopping experience for automotive enthusiasts like you. Our commitment is to deliver high-quality parts to your doorstep with the utmost care.

Fast and Reliable Shipping:
Many of our products are stocked in our local warehouse, ensuring swift processing and delivery. Orders placed for these items typically ship within 2-5 business days, allowing you to get your parts in no time.

Extended Selection, Global Reach:
To offer you a broader range of automotive parts, some items are sourced from trusted suppliers around the world. While these products might have a slightly longer processing time, we assure you that the wait is worth it for the exceptional quality and value they bring.

Shipping Transparency:
For products shipped internationally, we provide estimated delivery times on the product page. Rest assured, we are continually working to optimize our supply chain and minimize any potential delays.

Combined Shipments:
To streamline your shopping experience, if your order includes items from both our local warehouse and international suppliers, they may be shipped separately. You will receive separate tracking information for each shipment.

Questions or Concerns?
If you have any questions about shipping or would like assistance tracking your order, our dedicated customer support team is here to help. Feel free to reach out to us at support@k2-industries.com.

You can also track your order here

Thank you for choosing K2 Industries for your automotive needs. We appreciate your trust in us.

FAQs

How do I confirm this part fits my vehicle?

Use the vehicle selector at the top of this page to verify fitment. If anything's unclear, send us your year/model/trim (or VIN) via live chat or email support@k2-industries.com — we'll confirm fitment for free, before you commit.

How long until I get my order?

In-stock items typically process in 3-5 business days, then ship — most domestic orders arrive within 3-7 business days after that. Larger freight items take 3-10 days in transit. Some items are made-to-order (carbon fiber, aero kits) and require 10-25 business days of production before shipping — these are marked on the product page.

What if it arrives damaged?

Inspect your shipment when it arrives, take photos of any damage to the box and part, and reach out via live chat or support@k2-industries.com. For freight deliveries, note visible damage on the paperwork before signing. We handle the carrier claim and get you a replacement.

What if I want to return it?

You have 30 days from delivery. As long as the part is uninstalled and in original condition, you can choose between an exchange, store credit (no fees, never expires — our most popular option), or a refund. Drop us a message and we'll walk you through the easiest path.

Can I install this myself, or do I need a shop?

Depends on the part. Some are straightforward DIY, others are body shop or specialist work. Each product page indicates the recommended install path. If you're unsure, message us with your build details and we'll give you a real assessment.

What's the fastest way to reach you?

Live chat and email — typical response time is a few business hours, and you can reach out anytime. Chat with us on the site or email support@k2-industries.com. We resolve issues directly far faster than going through your bank or card processor.

The K2 Difference

  • • Built by enthusiasts who've made every fitment mistake you're afraid of. Now we verify parts for 30,000+ builds a year with zero wrong-part claims.
  • • Real specialists answer your questions in minutes, not chatbots reading scripts. We've built the same cars you're building.
  • • Freight damage, wrong parts, installation question, we handle it so you don't deal with suppliers or shipping companies.
Founder photo

Built By Someone Who's Been There

Max, the Owner, started in his garage making E36 M3 tail lights in his own oven.

  • • Started modifying cars before he could legally drive them
  • • Spent years hunting down parts that actually fit and don't suck
  • • Made the same fitment mistakes you're afraid of

You’re not buying from a warehouse. You’re buying from someone who builds cars just like you do.

Founder photo

What You Get With Every Order

Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Get Help From People Who Actually Understand Builds & Fitment.
Get Help From People Who Actually Understand Builds & Fitment.
Designed to Resist UV Exposure, Wear, and Everyday Use.
Designed to Resist UV Exposure, Wear, and Everyday Use.
Join Thousands of Builders Who Trust K2
Join Thousands of Builders Who Trust K2

What Sets K2 Industries Apart?

We don’t just sell parts. We actually give a damn.
Pre-Order Fitment Verification
Damage Replacement
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
K2 Industries
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K2 Industries
Other Brands
Pre-Order Fitment Verification
Damage Replacement
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
Add to Cart
GuaranteePerfect fit guaranteed

Frequently Asked Questions

How do I know this will actually fit my car?

Every part listing shows compatible years, models, and trims. But here's the thing—trim packages and factory options can be confusing. If you're not 100% certain, text us at 772-277-2495 with your VIN or photos of your car. We'll verify fitment before you order so you're not stuck with an $800 part that doesn't fit. We've done this for 30,000+ builds. We've seen every weird trim combo and factory option. Takes us 2 minutes to verify, saves you weeks of headaches.

What if the part arrives damaged or is the wrong item?

We handle it. You don't fight with freight companies or file claims. Text us photos within 48 hours of delivery. If it's damaged or wrong, we ship a replacement immediately. You're not waiting 6 weeks for a freight claim to process. We eat the cost, not you. This is why we package everything like it's going to war. But if something slips through, we fix it ASAP. No forms, no back-and-forth, no "file a claim and wait." Just text us and we handle it.

Can I install this myself or do I need a shop?

Depends on the part. Emblems, front lips, some spoilers, bolt-on, DIY-friendly, you can do it in your driveway with basic tools. Full bumpers, hoods, wide-body kits, possible for experienced DIYers but most people take them to a shop for paint and install. Check the product description for installation difficulty. If you're unsure, text us. We'll be honest about whether you can handle it or if you should take it to a pro. We'd rather you know upfront than get frustrated halfway through.

What's your return policy if it doesn't fit or I don't like it?

30 days, unused parts in original packaging. You pay return shipping unless we sent the wrong part or it arrived defective. Once you install it, modify it, paint it, or mount it, we can't take it back. That's why we push so hard on verifying fitment BEFORE you order. We don't want you stuck with something you can't use. Text us before ordering if you're unsure. We'll confirm fitment so you never have to worry about returns.

Do you offer financing?

Yes. Affirm and Shop Pay available at checkout for orders over $50. Split payments over 3-12 months depending on order size. No hard credit check to see your options. Most people use this for big-ticket items like body kits, suspension setups, or wheel/tire packages. Rates vary based on credit. You see the monthly payment before you commit. Makes it easier to build now instead of waiting months to save up.

What if I have questions after I receive the part?

Text 772-277-2495. We don't disappear after you buy. Fitment questions, installation issues, "does this bolt go here" questions... we'll walk you through it. We've installed these parts ourselves or helped hundreds of people install them. You're not getting transferred to a call center in the Philippines. You're texting someone who's actually installed your part before. If we can't help remotely, we'll recommend a local shop that knows these parts.

Why should I buy from K2 instead of eBay/Amazon/other sites?

eBay and Amazon sellers don't answer fitment questions. They don't verify your VIN before shipping. They don't handle freight damage claims for you. If something goes wrong, you're filing disputes and waiting weeks. We're builders selling to builders. We verify fitment before you order. We handle damage claims same-day. We answer texts in minutes. We're not the cheapest, but you're not gambling $800 on whether a part fits. You're paying for support, verification, and someone who cares if your build goes sideways.

What does your warranty cover?

1 year against manufacturing defects: cracking, warping, paint peeling, hardware failure, fitment issues caused by the part being made wrong. Does NOT cover installation damage (you cracked it bolting it on), road damage (curb rash, rock chips), or normal wear. If it breaks because we made it wrong, we replace it free. If it breaks because you hit a parking block, that's on you. We're fair about it. Send photos and we'll tell you honestly if it's covered.

Shipping

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

How much does shipping cost and when will I see the total?

Depending on where you're located, small parts can ship free. Large parts like bumpers, hoods, and body kits require freight shipping. Uou'll see the exact cost at checkout before you pay. Freight usually runs $150-$300 depending on size and your location. We know it's expensive. We negotiate the best rates we can. If you're ordering multiple large parts, text us. We can sometimes combine shipping and save you money. We're not hiding fees in the final step. What you see at checkout is what you pay.

How long will it take to receive my order?

It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.

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