Subaru EJ20 / 25 Crank Case 10AN

NZKW Subaru EJ20/EJ25 Crankcase Breather Fitting (10AN)

Improve crankcase ventilation on your Subaru with the NZKW Subaru EJ20/EJ25 Crankcase Breather Fitting, designed for reliable performance in high-boost and high-temperature environments. This fitting is located at the crankcase breather closest to the turbo, making it an essential upgrade for improved oil control and engine breathing efficiency.

Engineered for convenience, this fitting features a press-fit design with no welding required, allowing for a quick and secure installation. The 10AN male outlet is compatible with both push-lock and swivel hose fittings, giving you flexibility when setting up your breather system.

Key Features

• Designed for Subaru EJ20 / EJ25 crankcase applications
• Located at the breather point closest to the turbo
• Press-fit installation – no welding required
• Compatible with 10AN hose systems
• Works with both push-lock and swivel fittings
• Helps improve crankcase ventilation and reduce pressure buildup
• Ideal for turbocharged and performance engine builds

Package Includes

• 1 x 10AN crankcase breather fitting

Specifications

• Body outer diameter: 19.5mm
• Press-in body height: 10mm
• Outlet: 10AN male

Built for Performance & Reliability

The NZKW crankcase breather fitting is designed to improve airflow out of the crankcase, helping reduce oil contamination and pressure buildup that can affect engine performance. It’s a simple yet highly effective upgrade for tuned Subaru EJ-series engines operating under demanding conditions.

Why Choose NZKW Crankcase Fittings?

• Clean, weld-free installation for fast setup
• High-quality 10AN compatibility for performance hose systems
• Compact, precise fitment for OEM-style integration
• Supports improved engine breathing under boost

Ideal for turbocharged Subaru builds, the NZKW Subaru EJ20/EJ25 Crankcase Breather Fitting delivers reliable performance and a professional installation finish.