1in Crank Case Vent

The K AND N ENGINEERING 1in Crank Case Vent (Model 62-1040) is a push-in breather assembly designed to manage crankcase pressure in internal combustion engines. This round, reusable vent features a rubber and steel construction with a black and chrome finish, engineered for 1-inch hole mounting. The breather prevents excessive crankcase pressure buildup while filtering harmful vapors, a critical function in high-performance and modified engine applications where standard factory ventilation falls short.

Constructed from durable rubber and steel materials, this crank case vent combines flexibility with structural integrity. The combination of black and chrome finish provides both corrosion resistance and a clean appearance under the hood. The push-in design allows straightforward installation into a 1-inch hole without requiring additional fasteners or adapters, reducing installation time and complexity. At just 0.17 lbs, the lightweight assembly adds minimal weight while performing its pressure-regulation function reliably across extended operating conditions.

This breather is suited for engine builders, off-road enthusiasts, and mechanics maintaining or upgrading vehicles with modified powerplants. Whether used in street performance builds, track preparation, or recreational off-road recovery rigs, proper crankcase ventilation prevents oil leaks, extends engine seal life, and maintains consistent internal pressures during sustained operation. The reusable design makes this a practical long-term investment for serious engine work, eliminating the need for disposable breather elements.

K AND N ENGINEERING has long specialized in intake and filtration systems for performance applications. This crank case vent aligns with that expertise, offering mechanics and builders a dependable breather solution that meets the ventilation demands of non-stock engine configurations. The modular, push-in design integrates into existing custom engine bay layouts without requiring complex plumbing modifications.