SKU: 89581105529

3.000" ID x 4" Long Flex Coupling (Interlock Liner) 304 Stainless

Sale price$22.45 Regular price$24.95
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

3.000" ID x 4" 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: 3°

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: 89581105529

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Bill Bryant
Battle Creek, US
★★★★★ 5
Fits perfectly and works well
fit the 2023 Jeep Grand Cherokee, always a relief. Works well too, inside air is cleaner. Happy with it and will purchase again when it is time
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Reviewed in the United States on August 14, 2025
F
Verified Purchase
Frank J
Pawtucket, US
★★★★★ 5
Perfect fit.
The cabin filter is easy to install and fits perfect, but just so you know it is not OME.
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Reviewed in the United States on July 28, 2025
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Vanessa prado
Lowell, US
★★★★★ 5
Item is sturdy
Great item. The quality is amazing too
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Reviewed in the United States on September 8, 2025
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Verified Purchase
George
Lowell, US
★★★★★ 5
Good quality
Appeared to be better quality than the origional.
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Reviewed in the United States on January 16, 2026
P
Verified Purchase
PAPA
Massapequa, US
★★★★★ 5
Cabin filter
Fits perfect
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Reviewed in the United States on July 17, 2025

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