Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black

Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - Black

Marsoni

M251S

$10.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Mishimoto 3.5 to 4 Inch Silicone Transition Coupler - BlackSKU: MMCP 3540BK UPC: 811580038136 Mishimoto 3. 5 to 4 Inch Silicone Transition Coupler Black (Universal Fit) Mishimoto 3. 5 to 4 inch silicone transition coupler connects pipes in custom air intake systems, turbo inlets, outlets, and intercooler setups on any vehicle. Built with 4 ply reinforced silicone, it resists heat up to 350F and pressures to 200 PSI for dependable airflow. Choose black, blue, or red to match your engine bay. Key Features 4 Ply

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We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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Initially I had installed non-genuine Lexus filter, which the seller claims it fits Lexus RX. That filter fits (kinda). After installing the air-filter and closing the lid, I could see the edge of the filter because the lid did not close tightly. I am not a mechanic, but I was concerned. Hence, I ordered the genuine Lexus filter from Lexus dealer through Amazon. I paid twice more than non-genuine filter (including extra shipping charge of $10.00). Genuine filter arrived in the FEDEX box (looks and feels pretty sturdy enough to protect the filter) only 2 days after I placed the order. I have just replaced the filter. The lid closes perfectly. Although I spent total $40, for the peace of my mind, it's the money well spent.

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Reviewed in the United States on July 20, 2022

Verified Purchase

Amazon Customer

Louisville, US

★★★★★ 5

Fits 2015 Lexus RX350

Perfect fit for a 2015 Lexus RX350.

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Reviewed in the United States on September 5, 2025

Verified Purchase

Frank R.

Chelsea, US

★★★★★ 5

Lexus, you have never let me down!

I asked for original equipment and that is what I received. Delivery only took a few days from a dealer mid way across the country. A perfect FIT.

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Reviewed in the United States on November 7, 2025

Verified Purchase

Whiting, US

★★★★★ 4

Great Filter - shipping needs to be improved

The air filter was great and would recommend the OEM filter. My only Complaint is that they didn’t ship it in a box but only slapped on a shipping label on to the original air filter box. It took about a week to get to me (Arizona) and the box looked really beat up and luckily the filter was still ok by the time it got to me. Recommend putting it in a box to protect it from damage.

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Reviewed in the United States on February 22, 2026

Verified Purchase

jamwantie chatoredussy

Battle Creek, US

★★★★★ 5

Sandy

Exact fit for my 2022 RX 350

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Reviewed in the United States on September 4, 2025