The Story
This Cohline 25.0 x 35.5 mm Reinforced 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 handle crankcase ventilation flow in larger-diameter breather circuits that need added support against collapse.
Technical Details
- Manufacturer part number: 2637.2500
- SKU: DFBH_2637.2500
- Part type: Reinforced breather hose
- Size: 25.0 mm inner diameter x 35.5 mm outer diameter
- Construction: Rubber hose with inner steel wire reinforcement
- Service note: Confirm the original hose size and routing before cutting to length
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 want help confirming fitment before ordering, contact PMB Performance with your VIN or the details from your existing part. We have been working on Porsche brake and parts applications for over 20 years and can help sort out the small differences that affect fit.
Description
This Cohline 25.0 x 35.5 mm Reinforced 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 handle crankcase ventilation flow in larger-diameter breather circuits that need added support against collapse.
Technical Details
- Manufacturer part number: 2637.2500
- SKU: DFBH_2637.2500
- Part type: Reinforced breather hose
- Size: 25.0 mm inner diameter x 35.5 mm outer diameter
- Construction: Rubber hose with inner steel wire reinforcement
- Service note: Confirm the original hose size and routing before cutting to length
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 want help confirming fitment before ordering, contact PMB Performance with your VIN or the details from your existing part. We have been working on Porsche brake and parts applications for over 20 years and can help sort out the small differences that affect fit.
