Description
The Mishimoto Silicone Radiator Hose Kit, part number MMHOSE-WRX-15RD, replaces the factory rubber cooling hoses on the 2015 Subaru WRX with a red silicone upper radiator hose, lower radiator hose, and coolant overflow hose. Built from four layers of silicone reinforced with heat-resistant embedded fibers, this kit is engineered to outlast the degradation-prone rubber hoses that come stock on the WRX.
Rubber hoses break down over time from heat cycling and pressure, eventually leading to leaks or failure at the worst possible moment. Mishimoto’s performance-grade silicone construction is designed to improve heat and pressure tolerance, carrying a maximum temperature rating of 330°F, so your Subaru WRX cooling system stays reliable whether you’re commuting daily, running local rallycross events, or lapping at a track day. The kit ships complete with four worm-gear clamps, making the upgrade straightforward for anyone tackling the install at home or in the shop, and it’s backed by the Mishimoto Lifetime Warranty.
Vehicle Applications
This silicone radiator hose kit is a specific fit for the Subaru WRX, covering the Base, Limited, and Premium trims from 2015–2021, the 6 Man and CVT trims from 2018–2021, the Sport and Sport-tech trims from 2017–2021, the Sport-tech RS for 2019–2020, the EyeSight trim for 2021, and the Raui Edition for 2019. It also fits the Subaru Forester 2.0XT Premium and 2.0XT Touring for model years 2014–2018, as well as the Forester 2.0XT Limited for 2014 and 2016–2018.
Features
- Direct, specific fit for the applicable Subaru WRX and Forester 2.0XT model years listed
- Constructed from four layers of silicone with heat-resistant embedded fibers
- Improves heat and pressure tolerance over factory rubber hoses
- Maximum temperature rating of 330°F
- Includes upper radiator hose, lower radiator hose, and coolant overflow hose
- Includes four worm-gear clamps for ease of installation
- Performance-grade silicone hose material
- Available in black, blue, or red; this kit is red
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-WRX-15RD
- Product Type: Cooling
- Hose Material: Silicone
- Grade Type: Performance
- Hose Color: Red
- Maximum Temperature Rating: 330°F
- Clamps Included: Yes
- Universal or Specific Fit: Specific
- Purchase Includes: (3) Silicone Hoses, (4) Worm-Gear Clamps, Mishimoto Lifetime Warranty
Frequently Asked Questions
What does the Mishimoto MMHOSE-WRX-15RD kit include?
The kit includes an upper radiator hose, a lower radiator hose, a coolant overflow hose, and four worm-gear clamps, all backed by the Mishimoto Lifetime Warranty.
What is this hose kit made from?
It is constructed from four layers of silicone with heat-resistant embedded fibers, offered in a performance grade designed to improve heat and pressure tolerance versus factory rubber hoses.
What is the maximum temperature rating of this hose kit?
The Mishimoto silicone radiator hose kit has a maximum temperature rating of 330°F.
Which vehicles is this hose kit compatible with?
It fits the Subaru WRX Base, Limited, and Premium (2015–2021), 6 Man and CVT (2018–2021), Sport and Sport-tech (2017–2021), Sport-tech RS (2019–2020), EyeSight (2021), and Raui Edition (2019), as well as the Subaru Forester 2.0XT Premium and Touring (2014–2018) and 2.0XT Limited (2014, 2016–2018).
What colors are available for this Mishimoto hose kit?
This hose kit is available in black, blue, or red; the MMHOSE-WRX-15RD version is red.
Are installation clamps included?
Yes, the kit includes four worm-gear clamps to make installation easier.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
















