Cowl Water Evacuation Tube 1611681480

Maintain a dry, rust-free plenum chamber and prevent water ingress into your cabin with the genuine cowl water evacuation tube (part 1611681480). This factory-engineered drain hose channels rainwater and windshield-washer runoff away from the cowl area into the wheel-arch reservoirs, preserving body integrity and HVAC performance.

Key Benefits

• OEM-Exact Fit
  Molded to GM’s original specifications for seamless bolt-in installation—no trimming or modification required.

• Durable Plastic Construction
  UV-resistant polyethylene resists cracking, brittleness and chemical attack from washer solvents.

• Effective Drainage
  Optimal internal diameter and smooth bends ensure rapid evacuation of water, preventing pooling and freeze damage.

• Corrosion Prevention
  Keeps moisture away from wiper motor, HVAC intake and firewall seams, extending component life.

• Quick Replacement
  Installs in minutes by slipping onto cowl outlets and securing with factory tabs or clamps.

Vehicle Compatibility

Commonly fitted to General Motors models with cowl panel drain configurations, including:

• Chevrolet Impala (2010–2016)

• Chevrolet Malibu & Malibu Limited (2013–2016)

• Buick Regal & LaCrosse (2011–2017)

• Cadillac XTS (2013–2019)

• GMC Terrain (2010–2017)

Always verify the part number on your existing tube or consult your VIN for exact fitment.

Technical Specifications

• Part Number: 1611681480

• Material: UV-stable polyethylene

• Finish: Natural black plastic

• Length: ≈ 450 mm overall

• Inner Diameter: 15 mm nominal

• Operating Temperature: –40 °C … +80 °C

• Mounting: Snap-in tabs / OE hose clamps

• Warranty: 12 months GM Genuine Parts coverage

Installation Overview

1. Open the hood and locate the cowl panel outlets behind the windshield.

2. Detach the old tube by releasing its retaining tab or clamp and pulling it free.

3. Clean the outlet ports of debris, leaves and old sealant.

4. Push the new tube onto the cowl outlet until the retaining tab or clamp engages.

5. Route the hose down into the wheel arch and secure the lower end to the factory drain tube boss.

6. Test by pouring water into the cowl area and confirming free flow through the tube.