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🔥 Upgrade your boost game with the ultimate silicone reducer coupler! 💨
The OHOB-COOL 3.5 to 4 inch silicone reducer coupler hose is a high-performance, 4-ply reinforced silicone transition hose designed for demanding turbo, intercooler, and industrial hydraulic applications. With a precise ID range of 89-102mm, 5.4mm wall thickness, and temperature resistance from -76°F to 500°F, it meets SAEJ20 standards and withstands pressures up to 130.5 psi. UV and ozone resistant, this durable hose is perfect for professional-grade automotive, heavy equipment, marine, and military use, ensuring reliable performance under extreme conditions.









| ASIN | B095HNCK8N |
| Best Sellers Rank | #96,591 in Automotive ( See Top 100 in Automotive ) #53 in Car Engine Intercooler Parts |
| Brand | OHOB-COOL |
| Brand Name | OHOB-COOL |
| Color | Black |
| Colour | Black |
| Customer Reviews | 4.7 out of 5 stars 178 Reviews |
| Item Length | 3 Inches |
| Item Weight | 0.14 Kilograms |
| Item weight | 0.14 Kilograms |
| Manufacturer | hengxing |
| Material | Silicone |
| Material Type | Silicone |
| Maximum Pressure | 0.9 Kilopascal |
| Maximum pressure | 0.9 Kilopascal |
| Nominal Wall Thickness | 5.4 millimeters |
| Nominal wall thickness | 5.4 millimeters |
| Outside Diameter | 94 Millimeters |
| UPC | 645569097735 |
| Unit Count | 1 Count |
B**S
Holding 15psi boost on a 900hp big block... Read for more...
This review is for the 3"-3.5" ID 45 Degree Elbow silionce Coupler Reinforced Hose,4-Ply Turbo/Intercooler/Intake Piping Industrial Hydraulic, which was selling for $19 at the time of this review - SEE MY NOTE at the end of this review. Installed this on a custom turbo setup and it is holding 15 pounds of boost easily and was inexpensive. It is a little glossy for my taste but once the hood is closed and it gets dirty I will forget about that pretty quick. For this price I would have no problem ordering another one. NOTE - If you are not familiar with Amazon Vine, it is basically Amazon trading products for honest reviews. NOTE that the items are NOT Free because Vine Members have to pay Income Tax on the value of the item, so the product is discounted but definitely not free, more like 1/3 to 1/2 price. As such, I don't order things that I don't NEED and USE!!! This is an important distinction because it should give you more faith that my reviews are not some fake nonsense boilerplate... I USE WHAT I ORDER, and I don't hold back if something is junk because I still had to pay for it... and this program actually bumped me up to a higher tax bracket in 2025, so it definitely wasn't free!
O**.
Reducer’s
Fit perfect
B**S
For the money, it is good... Read for more...
This review is for the ID 45 Degree Elbow silionce Coupler Reinforced Hose,4-Ply Turbo/Intercooler/Intake Piping Industrial Hydraulic (mm) (3.5"-4"), which was selling for $22 at the time of this review - SEE MY NOTE at the end of this review. I am running this on a turbo big block at 15 psi ànd it is holding perfectly. Good quality for the price. I would prefer it had a less glossy finish but it works great and seems well made for an elbow at this price. NOTE - If you are not familiar with Amazon Vine, it is basically Amazon trading products for honest reviews. NOTE that the items are NOT Free because Vine Members have to pay Income Tax on the value of the item, so the product is discounted but definitely not free, more like 1/3 to 1/2 price. As such, I don't order things that I don't NEED and USE!!! This is an important distinction because it should give you more faith that my reviews are not some fake nonsense boilerplate... I USE WHAT I ORDER, and I don't hold back if something is junk because I still had to pay for it... and this program actually bumped me up to a higher tax bracket in 2025, so it definitely wasn't free!
H**E
The great hose
This is a great hose to short for me
G**S
Works great
I have been running this elbow for a little over 9 months. Pliable enough and rigid enough for bossted applications.
Trustpilot
2 months ago
5 days ago