SKU: 23992424024

4.000" ID x 8" Long Flex Coupling (Interlock Liner) 304 Stainless

Sale price$68.36 Regular price$75.95
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 28 - Sep 2

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Description

4.000" ID x 8" Long Flex Coupling (Interlock Liner) 304 StainlessThe Ace Race Parts brand of 100% 304 Stainless Steel Interlock Liner style Flex Couplings are great for reducing vibration and stress in your exhaust system. Our Flex Couplings feature a 304 Stainless braided exterior, a 304 Stainless interlock style internal liner, a flexible 304 Stainless bellow in the center, and 304 Stainless end caps. The interlock style internal liner helps provide a smooth flow for the high temperature exhaust gases passing

The Ace Race Parts brand of 100% 304 Stainless Steel Interlock Liner style Flex Couplings are great for reducing vibration and stress in your exhaust system. Our Flex Couplings feature a 304 Stainless braided exterior, a 304 Stainless interlock style internal liner, a flexible 304 Stainless bellow in the center, and 304 Stainless end caps. The interlock style internal liner helps provide a smooth flow for the high temperature exhaust gases passing through the flex coupling. Our Interlock Liner style Flex Couplings feature a slip-fit design on both the inlet and the outlet that allows the matching tube size material to slip into the Flex Coupling for easy alignment and welding. 

FEATURES

  • 100% 304 Stainless Steel Construction
  • Slip-Fit Design Allows for Ease of Use
  • Smooth Flowing Interlock Liner (non-directional)
  • Max Temperature Rating: 800°C / 1472°F
  • Max Axial Deflection: 8°

NOTE: These flex couplings feature an interlock style liner and are not intended to be used in turbo manifolds or applications where the flex coupling is positioned BEFORE the turbo(s). Due to the extreme heat created by the turbo(s) and/or the turbo manifold(s) the internal interlock portion can degrade and may damage the turbo. Ace Race Parts is not responsible for any damage caused by using this flex product in pre-turbo applications or if it is placed in the direct line of induction of the turbo(s). We highly suggest using Flex Bellows with a solid inner liner for pre-turbo applications, including turbo manifolds. 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 23992424024

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4.8 ★★★★★
Based on 15 reviews
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Verified Purchase
Pusheen3
Pawtucket, US
★★★★★ 5
Works great on my 2018 Honda Civic EX
Size: 2.0L, Size: 2.0L
Been buying these for years. They are relatively cheap and easy to replace, so much better than getting ripped off at the dealer lmao. Compatibility and Installation - 5/5 Filtration Efficiency and Performance - 5/5 Durability and Value for Money - 4/5 - these are made to be replaced, so can't really do much about that!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2024
B
Verified Purchase
Brittany
Grantham, US
★★★★★ 5
Perfect
Size: 2.0L
I bought this and was able to change this myself. It was simple. I got this for my 2016 Honda Civic, I don't think I ever replaced the filter in my car in the 5 years that I had it. It had a distinct smell in my car, and once I popped this bad boy in, within a day or two the smell was gone. It did make a sound for a while like I did not do it correctly, but I did, after about a week the sound went away, so everything's good. I will buy this again when the time comes
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Reviewed in the United States on July 16, 2024
J
Verified Purchase
Joel
Natrona Heights, US
★★★★★ 5
2017 honda civic
fits perfectly on my 2017 honda civic and easy to install. its an above average filter as well.
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Reviewed in the United States on April 18, 2026
T
Verified Purchase
Tracy K
Phoenix, US
★★★★★ 5
Top of the line high quality
Top of the line great filter
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Reviewed in the United States on March 24, 2026
B
Verified Purchase
Brian J.
Fort Morgan, US
★★★★★ 4
Good fit works well, once I figured installation
Does not show air flow direction
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Reviewed in the United States on January 22, 2026

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