Mazdaspeed 3 / 6 & CX-7 Turbo Oil Drain Hose Kit | K0422 | Reinforced NBR

Restore high-volume oil evacuation and eliminate messy seepage. The factory oil return on the 2.3L DISI engine is a notorious site for leaks. Unlike common rubber setups, the original equipment is a rigid metal pipe that is highly susceptible to vibration-induced fatigue. Over time, the heavy harmonics of the 2.3L MZR engine cause the factory welded joints and bellows to develop hairline fractures, leading to persistent leaks and messy engine bay smoke. This GryphonTek Signature Series Kit provides an upgraded, high-flow return path using High-Temp Reinforced NBR, offering the flexibility needed to absorb engine movement and stop the leaks for good.

• Vibration-Resilient Flex: Absorbs high-frequency engine harmonics to prevent the fatigue cracks common in rigid factory pipes.
• High-Flow Architecture: Optimized internal diameter ensures rapid oil evacuation, stopping the back-pressure that causes "Blue Smoke."
• Industrial-Grade NBR: Reinforced hose resists extreme radiant heat and oil-induced hardening in the DISI "Hot Pocket."
• Zero-Leak Billet Flange: CNC-machined 6061-T6 aluminum provides a perfectly flat interface for a permanent, professional-grade seal.

Technical Installation Note

Hardware Compatibility: This kit with thick-profile engine-side drain flange. To ensure a proper installation, an extended engine mount bolts are included to replace the shorter factory hardware.