| Brand | GM Genuine Parts |
| Adjustable | No |
| FAQ - Answer 1 | Yes. The valve prevents exhaust from entering the pump. A faulty valve could allow exhaust to enter the pump, potentially causing damage to the pump and other components. |
| FAQ - Answer 2 | Yes. The one-way check valve can wear or fail, allowing water (which occurs naturally in the exhaust) back into the pump. |
| FAQ - Question 1 | Can a faulty check valve damage an air pump? |
| FAQ - Question 2 | Can water enter the air pump? |
| Features & Benefits - Bullet 1 | Helps prevent exhaust from entering air pump |
| Features & Benefits - Bullet 2 | Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE) |
| Features & Benefits - Bullet 3 | GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors |
| Features & Benefits - Bullet 4 | GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle |
| Features & Benefits - Bullet 5 | GM regularly updates production and service part designs to integrate new materials and technologies |
| Good Maintenance Practices - Section 1 - Bullet 1 | Replace check valve if it is not operating properly. |
| Good Maintenance Practices - Section 1 - Bullet 2 | Use approved octane fuel for your vehicle. |
| Good Maintenance Practices - Section 1 - Bullet 3 | Regularly inspect the air injection system for leaks or damage. |
| Material | Multiple |
| Meets or Exceeds Original Equipment Manufacture Specifications | Yes |
| Mount Hole Diameter (in) | 0.2559in |
| Mount Hole Diameter (mm) | 6.5mm |
| Port 1 Outside Diameter (in) | 1.003 |
| Port 1 Outside Diameter (mm) | 25.5 |
| Port Quantity | 2 |
| Programming Required | No |
WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov 