Upgrade your boosted setup with these 3" billet aluminum water/methanol Boost Cooler Rings. Designed for enthusiasts seeking efficient and secure charge air cooling, these rings install in-line with your cold side intake piping using standard 3" silicone couplers—no welding required. Each ring features four 1/8" NPT ports spaced every 90 degrees, allowing flexible placement of your water/methanol injection nozzles. Constructed from high-quality billet aluminum for durability and a clean appearance. Ideal for custom turbo or supercharger applications where precise, reliable cooling is essential.