The Story
This Cohline 18.0 x 25.5 mm Breather Hose is used for Porsche breather and crankcase ventilation service where the listed dimensions match the original hose. Cohline has been manufacturing automotive fluid system components since 1932, supplying hose and pipe assemblies for fuel, oil, cooling, and hydraulic applications to major vehicle manufacturers including Porsche. Known for German engineering, OEM-level fitment, and durable construction across metal, plastic, and elastomer components, Cohline parts are built for dependable sealing, proper routing, and long-term reliability. It is used to carry crankcase vapors or low-pressure ventilation flow in breather circuits.
Technical Details
- Manufacturer part number: 2637.1600
- Part type: Breather hose
- Size: 18.0 mm inner diameter x 25.5 mm outer diameter
- Construction: Rubber hose with outer rubber layer
- Service note: Sold by length and should be matched by size, bend radius, and the fluid or vapor carried
Fitment & Compatibility
This hose is sold by dimension rather than a vehicle-specific fitment list, so match it by inner diameter, outer diameter, hose construction, pressure rating, and the fluid or vapor it is intended to carry before ordering.
If you need help matching this part to your Porsche, contact PMB Performance before ordering with your VIN and any visible part numbers. We have over 20 years of Porsche brake and parts experience and can help verify the details.
Description
This Cohline 18.0 x 25.5 mm Breather Hose is used for Porsche breather and crankcase ventilation service where the listed dimensions match the original hose. Cohline has been manufacturing automotive fluid system components since 1932, supplying hose and pipe assemblies for fuel, oil, cooling, and hydraulic applications to major vehicle manufacturers including Porsche. Known for German engineering, OEM-level fitment, and durable construction across metal, plastic, and elastomer components, Cohline parts are built for dependable sealing, proper routing, and long-term reliability. It is used to carry crankcase vapors or low-pressure ventilation flow in breather circuits.
Technical Details
- Manufacturer part number: 2637.1600
- Part type: Breather hose
- Size: 18.0 mm inner diameter x 25.5 mm outer diameter
- Construction: Rubber hose with outer rubber layer
- Service note: Sold by length and should be matched by size, bend radius, and the fluid or vapor carried
Fitment & Compatibility
This hose is sold by dimension rather than a vehicle-specific fitment list, so match it by inner diameter, outer diameter, hose construction, pressure rating, and the fluid or vapor it is intended to carry before ordering.
If you need help matching this part to your Porsche, contact PMB Performance before ordering with your VIN and any visible part numbers. We have over 20 years of Porsche brake and parts experience and can help verify the details.
