---
product_id: 746690852
title: "90mm (3.5\") to 51mm (2\") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A]"
brand: "ap automotive"
price: "¥6627"
currency: JPY
in_stock: true
reviews_count: 6
url: https://www.desertcart.jp/products/746690852-90mm-3-5-to-51mm-2-straight-reducer-hose-coupler
store_origin: JP
region: Japan
---

# 90mm to 51mm diameter precision fit High-temp resistant -60°C to +180°C 4-ply polyester reinforced durability 90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A]

**Brand:** ap automotive
**Price:** ¥6627
**Availability:** ✅ In Stock

## Summary

> 🔧 Step down in size, step up in performance!

## Quick Answers

- **What is this?** 90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A] by ap automotive
- **How much does it cost?** ¥6627 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/746690852-90mm-3-5-to-51mm-2-straight-reducer-hose-coupler)

## Best For

- ap automotive enthusiasts

## Why This Product

- Trusted ap automotive brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **High Pressure Endurance:** Certified to withstand up to 9 bars, perfect for demanding vehicle systems
- • **Robust 4-Ply Reinforcement:** Engineered with polyester layers for unmatched strength and longevity
- • **Glossy Blue Silicone Finish:** Sleek, eye-catching design that resists UV, ozone, and moisture damage
- • **Extreme Temperature Resilience:** Operates flawlessly from freezing -60°C to scorching +180°C environments
- • **Precision Fit, Universal Compatibility:** Seamlessly connects 3.5" to 2" hoses for versatile automotive use

## Overview

This 90mm to 51mm straight reducer silicone hose offers a universal, high-performance solution for automotive and industrial applications. Featuring a 127mm length, 4-ply polyester reinforcement, and a glossy blue finish, it withstands extreme temperatures (-60°C to +180°C) and pressures up to 9 bars. Certified to SAEJ20 standards, it ensures durability, flexibility, and a sleek look for cars, trucks, and pickups.

## Description

Full description not available

## Features

- 90mm (3.5") to 51mm (2") Internal Diameter | Hose Length 127mm (5 Inch)
- High Temperature Resistant Hose -60°C to +180°C
- 5.5mm Wall Thickness Silicone Tubing
- 4 Ply Polyester Reinforcement - Universal Fitment Suitable For Cars, Vehicles, Trucks, Pickups, Automotive
- Straight Reducer Step Down Silicone Hose, suitable for a wide range of applications that require high and low temperature flexibility with excellent resistance to ozone, UV and moisture. Silicone Hose is reinforced with textile layers

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ap automotive |
| Part Number | SSR090051B-ASH#1 |
| Item model number | SSR090051B-ASH#1 |
| Size | 90mm (3.5") to 51mm (2") |
| Colour | Blue |
| Style | Silicone Straight Connector |
| Finish | Glossy |
| Material | Silicone Rubber |
| Pattern | Straight Reducer |
| Shape | Circular |
| Installation method | Manual |
| Item Package Quantity | 1 |
| Maximum Pressure | 9 Bars |
| Cutting Diameter | 90.51 Millimetres |
| Certification | SAEJ20 |
| Usage | Cars, Vehicles, Trucks, Pickups, Automotive |
| Included Components | 90mm > 51mm Silicone Reducer Hose Blue, Silicone Hose, Step Down Reduction Pipe |
| Batteries included? | No |
| Batteries Required? | No |
| Assembled Diameter | 90.51 Millimetres |
| Item Weight | 100 g |

## Product Details

- **Brand:** AP Automotive
- **Material:** Silicone Rubber
- **Colour:** Blue
- **Item weight:** 100 Grams
- **Maximum pressure:** 9 Bars
- **Nominal wall thickness:** 5.5mm
- **Manufacturer:** ap automotive
- **Specific uses for product:** Cars, Vehicles, Trucks, Pickups, Automotive

## Images

![90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A] - Image 1](https://m.media-amazon.com/images/I/61IYT1Y4NmL.jpg)
![90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A] - Image 2](https://m.media-amazon.com/images/I/71jH+O5vu1L.jpg)
![90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A] - Image 3](https://m.media-amazon.com/images/I/51rwj3jDmtL.jpg)
![90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A] - Image 4](https://m.media-amazon.com/images/I/411eYR4oSbL.jpg)
![90mm (3.5") to 51mm (2") Straight Reducer Hose Coupler Intercooler Universal Tube Blue [Energy Class A] - Image 5](https://m.media-amazon.com/images/I/71xTOq3nYJL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ All perfect
*by T***Y on 18 April 2025*

Worked good for my airbox mod

### ⭐⭐⭐⭐⭐ Nice and prefect in size
*by T***H on 3 October 2024*

Check the size of you pipe before make the order as I did this mistake however in my next order I get prefect size. Good quality and property fit in my air filter

### ⭐⭐⭐⭐⭐ Excellent!!!!!
*by K***S on 8 September 2023*

I was looking for radiator pipework for my kitcar and quickly discovered specialist rad piping isn't cheap. These were significantly cheaper than other vendors, well done to Amazon for having these on site. Excellent quality, brilliant value for money and a first class range of product variation, loads of choice. You won't find better for the money and that is an absolute fact. Go on look and you will discover I am 100% right

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**Shop now:** [https://www.desertcart.jp/products/746690852-90mm-3-5-to-51mm-2-straight-reducer-hose-coupler](https://www.desertcart.jp/products/746690852-90mm-3-5-to-51mm-2-straight-reducer-hose-coupler)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-25*