Great news – on this purchase, you'll enjoy a BuildBUX bonus of $1.16.
Your Subaru’s cooling system is only as good as its weakest link, commonly that’s the old, dry-rotted OEM coolant hoses. As your Subaru ages and the integrity of those hoses degrades, cracks develop and you can suddenly find yourself stranded on the side of the highway or the racetrack.
Part #: 405326
To keep a car reliable, whether it’s a daily driver or a high-horsepower build, it's important to make sure your radiator hoses are up for the job. They need to be able to handle not only everyday conditions, but also the increased temperatures and pressures of a built motor without bulging, leaking, or altogether blowing up. That’s where GrimmSpeed comes in.
GrimmSpeed has always been synonymous with top-notch parts manufacturing and superior quality, developing parts that can handle whatever you throw at them. Things are no different when it comes to the brand new GrimmSpeed Silicone Radiator Hoses.
These hoses are manufactured using a 5-ply construction system with fiber reinforcement between each layer of silicone to ensure that they maintain their shape and durability for the life of the vehicle. GrimmSpeed Silicone Radiator Hose Kits were designed by reverse engineering brand new factory hoses for a perfect fit and effortless installation without having to trim or kink the pieces. The kits are offered in a black or red color with the trademark GrimmSpeed logo embedded into each one and are available for a variety of Subaru applications. Every kit includes an upper hose, a lower hose and four stainless steel high-torque clamps from BREEZE.
We take pride in our products and the name that stands behind them, so as with all of the parts we manufacture, these units come with a Lifetime Warranty and will be the last set of radiator hoses you’ll have to buy.
Quick Specs
Fitment
More Cashback
Get more cashback! Items are changing weekly. Anywhere from 1% to 20% Back in BuildBUX when you make purchases. Products
Free Money
Every month when you are charged your $4.98 subscription fee, you will get $15 in BuildBUX
Easy To Cancel
Cancel anytime, month to month terms.
Cashback
Get 1% back on every purchase on eligible brands.
Free
Completely free to use. Just place an order!
These are very high quality and are a great replacement/upgrade over the stock rubber hoses. Also, much cooler looking than the stock hoses.
Shipped quick, easy to install, way better than OEM, and dresses up the engine bay like all the other GS goodies!
Perfect set of upper and lower radiator hoses for my 2021 STI. I recently did a Koyorad radiator swap and decided to go with a new set of hoses. These hoses are thicker and do not get as hot as the oem hoses. I did have to trim about 3/8 of an inch off the top hose to accommodate for the wider radiator since these hoses are spec out for OEM replacements. No biggie tho at all.
