IAGPerformance
IAG Silicone Upper & Lower Radiator Hose Kit for Subaru WRX 2015-21,
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Highlights
- THE IAG SILICONE UPPER & LOWER RADIATOR HOSE KIT - When it’s time to replace the factory radiator hoses on your 2015–2021 WRX, the IAG Silicone Upper & Lower Radiator Hose Kit provides a dependable, long-lasting upgrade over OEM rubber hoses. As rubber hoses age, they can deteriorate—leading to cracks, bulges, and potential leaks that compromise your cooling system. Built with premium materials and precision-engineered design, the IAG hose kit withstands extreme temperatures and wear, offering durability your factory components just can’t match.
- HEAVY DUTY CONSTRUCTION FITS - Constructed from 4-ply reinforced silicone and measuring 5mm thick, the IAG Silicone Upper & Lower Radiator Hose Kit is built to handle extreme heat, resist chemical breakdown, and outlast standard rubber hoses. Available in black, red, or blue, each hose features a pre-formed shape for a perfect fit that won’t pinch or collapse under pressure. Tough enough for competition use, these hoses provide reliable cooling performance on the street or at the track—even in the most demanding conditions.
- FACTORY FIT - The IAG Silicone Upper & Lower Radiator Hose Kit is a direct replacement for the upper and lower OEM radiator hoses on the 2015-2021 WRX, with pre-formed bends that fit just like factory. Designed for a precise fit at the radiator inlet, outlet, and engine ports, these hoses install easily with no modifications required. The kit also comes with stainless steel clamps for a strong, reliable seal.
- FITMENT - Fits Subaru WRX 2015-2021
- INCLUDES - (x1) Upper Radiator Hose, (x1) Lower Radiator Hose, (x1) Clamp Kit
Why You'll Love It
- Replaces aging factory rubber hoses to help prevent cracking, bulging, and cooling leaks
- Constructed from 4-ply, 5mm-thick silicone to withstand extreme heat and resist chemical breakdown
- Pre-formed shaping ensures direct alignment at engine ports without pinching or collapsing under pressure
- Direct drop-in replacement installs easily without requiring any vehicle modifications
- Includes stainless steel clamps to provide a dependable, leak-free seal right out of the box
- Available in black, red, or blue finishes to suit your preferred engine bay look
Pros
- +Durable 4-ply 5mm reinforced silicone
- +Pre-formed direct OEM fit
- +Includes stainless steel hose clamps
- +Available in three color choices
- +Resists extreme heat and chemicals
Cons
- -Fits only 2015-2021 Subaru WRX models
- -Includes only upper and lower hoses
Detailed Review
The IAG Silicone Upper and Lower Radiator Hose Kit replaces factory rubber cooling lines on 2015 to 2021 Subaru WRX models. Over time, stock rubber hoses are prone to aging, which can result in cracks, bulges, and coolant leaks. This kit gives WRX owners a sturdier alternative engineered to withstand extreme temperatures and tough driving conditions on the street or track.
Each hose is made from 4-ply reinforced silicone measuring 5mm in thickness. This heavy-duty build resists chemical breakdown and handles high thermal stress far better than basic rubber. The pre-formed design maintains its structural shape to prevent pinching or collapsing when cooling system pressure increases during demanding driving.
Installation is straightforward because the hoses are molded to match factory specifications. They route directly to the radiator inlet, outlet, and engine ports without needing custom trimming or vehicle modifications. IAG also includes a full set of stainless steel clamps in the box to ensure a tight, dependable seal at every connection point.
A notable limitation is vehicle compatibility, as this set is engineered exclusively for the 2015-2021 WRX platform. It replaces only the primary upper and lower radiator hoses, so auxiliary coolant lines are not part of the package. Buyers also need to choose between black, red, or blue options depending on their aesthetic preference.
Verdict: The IAG Silicone Radiator Hose Kit is a smart, direct-fit cooling upgrade for 2015-2021 Subaru WRX owners who want to replace deteriorating OEM rubber with durable, heat-resistant silicone.
Specifications
- Compatibility: Subaru WRX (2015-2021)
- Material: 4-ply reinforced silicone
- Hose Thickness: 5mm
- Included Pieces: 1 upper radiator hose, 1 lower radiator hose, clamp kit
- Clamp Material: Stainless steel
- Color Options: Black, Red, Blue
Who Should Buy It
A great fit if you:
- Drive a 2015-2021 Subaru WRX and have aging, swollen, or cracked factory rubber hoses.
- Need heat- and chemical-resistant silicone hoses for track days or spirited street driving.
- Want a direct-fit replacement that installs without cutting or modifying lines.
- Prefer having new stainless steel clamps included with your cooling hardware.
Consider something else if you:
- Drive a Subaru model outside the 2015-2021 WRX model years.
- Need a full ancillary cooling hose kit beyond the upper and lower radiator lines.
FAQ
Which vehicles does this radiator hose kit fit?
This kit is specifically designed for the 2015-2021 Subaru WRX.
What is included in the package?
The kit includes one upper radiator hose, one lower radiator hose, and a stainless steel clamp kit.
Are modifications required during installation?
No, the pre-formed hoses are direct replacements for OEM parts and install at factory ports without modifications.
What color options are available?
The hoses are available in black, red, or blue.
Photos
Product Specs
| Specification | Details |
|---|---|
| Item Dimensions L x W | 16"L x 5"W |
| Item Weight | 2 pounds |
| Nominal Wall Thickness | 5 millimeters |
| Item Length | 16 inches |
| Material Type | Silicone |
| Color | Red |
| Brand Name | IAG Performance |
| UPC | 887753992413 |
| Manufacturer | IAG Performance |
| Unit Count | 1 Count |
| Manufacturer Warranty Description | 1 Year Manufacturer |
| Included Components | (x1) Clamp Kit, (x1) Lower Radiator Hose, (x1) Upper Radiator Hose |
| Best Sellers Rank | #871,447 in Automotive (See Top 100 in Automotive) #3,040 in Automotive Replacement Radiator Hoses |
| ASIN | B0FJZWYB6T |
| Brand | IAG Performance |
| Material | Silicone |
| Product Dimensions | 16"L x 5"W |
| Number of Packs | 1 |
