CSL Crankcase Vent Hose – AN Lines And Fittings (04.5-06)

Product Details

A combination of billet fittings and AN lines for an upgraded and serviceable crankcase vent hose. Attaches between the oil separator and the CSL air box.

The factory rubber/plastic hoses become brittle and crack over time. Brittle and cracked hoses can cause multiple vacuum leaks that are impossible to repair without hose replacement. Vacuum leaks can cause many problems including rough running, missing, stalling at idle, and even a no-start condition. The factory hoses offered by BMW are plastic and will yield the same results of becoming brittle and damaged over time.

We have created a full motorsport-style solution with our CSL Crankcase made from machined 6061 billet aluminum with AN-style fittings and nylon fiber braided lines. This is a fully serviceable replacement that will outlast every one of the OEM replacements. Our AN crankcase line can be used to replace the factory brittle hose to ensure your S54 is free from vacuum leaks and performing properly. 

OEM CSL Vent Hose (11157833649) – Direct Replacement for cars with secondary shut-off valve. (11157834056)

Key benefits:

• Lifetime replacement of the brittle OEM plastic crankcase breather hose
• Fully Serviceable
• Motorsport Aesthetic to compliment your CSL Intake Plenum

Design:

• Fittings are made from billet 6061-T6 aluminum and finished in Type II black anodizing
• Pre-anodized machined Turner branding
• Nylon fiber braided lines
• Fittings are a direct replacement for the plastic OEM fittings

 

Not for sale or use in the state of California on any pollution-controlled vehicle as per the California Air Resources Board.