SKU: 86654086328

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

Sale price$13.32 Regular price$14.80
Save 10%

Pay in installments of $3.70 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 21 - Aug 26

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

1.750" 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: 86654086328

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
C
Verified Purchase
ChillinHoss
Bozeman, US
★★★★★ 5
Best cabin filter I've ever used...
After my girlfriend dumped a container of Italian beef juice onto the passenger side floor mat and having it soak into the floor mat and the carpeting, it left my new car stinking of Beef gravy. I bought this to hopefully extract the annoying and horrible smell from my car. The filter is perfectly made and fit with exacting precision and minimal effort. If is well built and of superb quality, materials. The bright white cartridge style top side is pleated for maximum air to filter contact. The other side has these wonderful beads of activated charcoal/carbon that are for absorbing odors. As soon as I installed it and turned on my ventilation/ AC/Heat, I could smell the clean filter and also a sense of cleaner air. Hoping this will do the job in time!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 17, 2023
P
Verified Purchase
Philippians 4:13
Houston, US
★★★★★ 5
Nice filter
Easy to install great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
R
Verified Purchase
Ridge
Grantham, US
★★★★★ 4
Good Fit & Fresh Air, But Slightly Reduced Airflow
I recently installed this cabin air filter in my 2024 4Runner, and it fits perfectly. It does a great job of filtering out the dusty Las Vegas air, leaving the cabin smelling fresh. However, I did notice a slight reduction in Airflow, on the highest blower setting, it feels like the output is about 25% lower than usual. It’s still early to tell how it will perform long term, but so far, it's doing its job well. If you prioritize air quality over maximum airflow, this is a solid choice at a good price too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2025
R
Verified Purchase
Roger M. Brown PhD
New York, US
★★★★★ 5
Filter fits well into cabin filter compartment of 2011 Toyota Avalon Limited.
Fits easily into my cabin filter slot of my 2011 Toyota Avalon Limited. It has performed well after a month of use. The design of this filter appears to be superior to the filters that are utilized at the Toyota dealer. The filter was easy to install via the back of the glove compartment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 5, 2026
S
Verified Purchase
Streamtrout
Lake Worth, US
★★★★★ 5
Really keeps outdoor smells out.
Built with real quality, keeps outdoor smells out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026

recommand products