HKS 4-6mm Reducer Fitting Replacement Part 18006-AK016

HKS 4-6mm Reducer Fitting Replacement Part (18006-AK016) Brand: HKS — Model: 18006-AK016. This precision-engineered reducer fitting adapts 6mm hose lines down to 4mm with reliable, leak-free performance, ideal for fuel, vacuum, and boost applications in performance and OEM systems. High-quality construction: Durable engineering-grade material resists heat, vibration, and chemical exposure. Exact fit: Engineered to HKS specifications for secure, interference-free connections between 6mm and 4mm hoses. Easy installation: Push-on design for fast replacement and maintenance without special tools. Versatile use: Suitable for aftermarket performance parts, turbo plumbing, vacuum lines, and OEM repairs. Part number: 18006-AK016 — ensures correct compatibility when ordering or cross-referencing. Upgrade or replace worn fittings with this OEM-grade HKS reducer to maintain system integrity and performance. Ideal for enthusiasts and professional installers seeking dependable, factory-aligned components.