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Description
Haltech IO 12 Expander Box 8ft Flying Lead Harness (A/B Box)Introducing the Haltech IO 12 Expander Box 8ft Flying Lead Harness, a premium wiring solution designed for engine components that demand reliability and exceptional performance. This flying lead harness is crafted to seamlessly expand your Haltech IO 12 system, delivering precise and efficient connections for your tuning and engine management needs. With a generous 8 foot length, this harness offers ample reach and flexibility, making installation
Introducing the Haltech IO 12 Expander Box 8ft Flying Lead Harness, a premium wiring solution designed for engine components that demand reliability and exceptional performance. This flying lead harness is crafted to seamlessly expand your Haltech IO 12 system, delivering precise and efficient connections for your tuning and engine management needs.With a generous 8-foot length, this harness offers ample reach and flexibility, making installation straightforward in a variety of engine setups. Compatible with both A and B box configurations, it's an essential accessory for enthusiasts looking to optimize their vehicle's wiring architecture.
Built by Haltech, a trusted leader in automotive electronics and tuning parts, this flying lead harness ensures rugged durability and consistent operation in demanding environments. Whether you're upgrading your wiring harness for a hot rod, kit car, or V8 engine project, this component stands up to the challenge.
Perfect for hobbyists and professional workshops alike, the Haltech IO 12 Expander Box Harness combines top-tier quality with the convenience of an online purchase from Tuningsupply, guaranteeing competitive pricing and fast European shipping without any hidden fees.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Worth it!
Size: 50 sqft
I was worried it wouldn't work as well since it's 50 mil and I thought I got the wrong thing. Nope! Works great. Did all four doors on my 93 civic and I have enough for the floor I think. Solid price. Noise reduced by about 5 decibels hive difference. Very sticky and easy to apply I'm so happy I was able to cover most all of my car. If I need more, definitely buying this since I got so much extra and I thought I would.
PS: that five decibel thing is only with the four doors. My firewall is next and then my floor, but it's such a huge difference
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Quiet your vehicle noises
Size: 50 sqft
Put this in our high roof van and couldn’t believe how much quieter it was at once. Really cut down on the vibration noise Nice and easy to install just peel n stick. Was also easy to cut with scissors for smaller areas. Seemed to be really nice quality. Didn’t notice any odor.
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Sound deadening the Hot Rod
Size: 20 sqft, Size: 20 sqft
Works well, good value for the money.
It’s very sticky and conforms to what you are applying it to. One 20 sq ft box did approximately the passenger side
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Good stuff
Size: 50 sqft, Size: 50 sqft
Good stuff. I did a lot of work on my 91 Toyota Land Cruiser 3FE. I did the inside and outside doors, as well as the under-hood area, with some extra work. I like this stuff. It sticks down good but you have to clean your surface so there's a good grip. I think these are going to do well for noise cancellation. The deadening material does well with absorbing vibrations too. But the install roller tools it will come in handy. Trust me trying to do it by hand is not worth it.
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Reviewed in the United States on June 6, 2026
★★★★★ 4
Good quality
Size: 10 sqft
I wish it was a little better but it definitely works great and look good for how cheap it is
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Reviewed in the United States on January 23, 2026
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