When it comes to keeping your Subaru running smoothly, the cooling system is a crucial player, and let's be real—those old OEM coolant hoses can be a ticking time bomb. Over time, they get dry and cracked, and before you know it, you’re stuck on the side of the road or worse, at the track, watching your buddies zoom past.
Whether you’re commuting to work or pushing your ride to the limits, you need radiator hoses that can keep up. They should be tough enough to handle not just everyday driving but also the extra heat and pressure that comes with a built motor. That’s where GrimmSpeed steps in, and trust me, they know their stuff.
GrimmSpeed has built a solid reputation for crafting high-quality parts that can take whatever you throw at them. Their new Silicone Radiator Hoses are no exception. These aren’t just any hoses; they’re made with a 5-ply construction that features fiber reinforcement between each layer of silicone. This means they’re not just durable—they’re built to last for the life of your vehicle.
What’s even better? These hoses are designed by reverse-engineering the original factory hoses, so you can expect a perfect fit without the hassle of trimming or kinking. They come in sleek black or vibrant red, both sporting the iconic GrimmSpeed logo, so you know you’re getting quality. Each kit includes an upper hose, a lower hose, and four high-torque stainless steel clamps from BREEZE, ensuring a tight fit that won’t let you down.
Features:
Fitments:
If you own a Subaru Impreza (2002-2007), STI (2004-2007), or WRX (2002-2007), the GrimmSpeed Black Radiator Hose Kit (part number 405325) is definitely worth considering. Don’t let old hoses ruin your ride—upgrade to something that can keep up with your passion.
Other Part Numbers:
GrimmSpeed #GRM405325
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
2002-2007 Subaru Impreza |
Impreza | 2002-2007 |
|
2004-2007 Subaru STI |
STI | 2004-2007 |
|
2002-2007 Subaru WRX |
WRX | 2002-2007 |

Grimmspeed is an automotive aftermarket company that was founded in 2006 by Justin Grimm. They specialize in creating parts for the exhaust system for various automotive vehicles. Grimm has always had this passion for cars and had always wanted to improve his vehicle’s performance. After numerous trials, he was able to perfect his craft and later on decided to turn it into his career. Today, they have become one of the leading brands when it comes to producing high-performance exhaust systems.
Expanding their Product OfferingThe company initially manufactured parts for Subaru. But as the company expanded, they started offering parts for other brands such as Ford, Mitsubishi, Hyundai, and Mazda. They now offer parts such as intercoolers, intake, exhaust, engine pulleys, gaskets, boost controllers, phenolic spacers and so much more.
Continuous Product DevelopmentGrimmspeed never stops in finding ways to produce innovative products and is always on the push to keep their products up to date. With the rapid change in automotive technology, it is a must that their product is able to adapt to this change for it to satisfy the demand of its users. This is the reason why the company has gained the trust of many tuners all around.
Purchase Grimmspeed Product at Vivid RacingBuilt by an enthusiast for fellow enthusiasts.
If you want a product that is designed to improve the performance of your vehicle, then Grimmspeed is the brand for you. To know more about Grimmspeed, visit Vivid Racing and check out their list of products that would fit your specific needs.