Speedmaster®
Downdraft Webber Stack Air Horns / Trumpets [SBC]
![Speedmaster® PCE638.1002 Downdraft Webber Stack Air Horns / Trumpets [SBC]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE638%20-%20Intake%20Manifold%20Fuel%20Injected%20Component/PCE638.1002/PCE638.1002.jpg?resizeid=225&resizeh=50&resizew=50)
![Speedmaster® PCE638.1002 Downdraft Webber Stack Air Horns / Trumpets [SBC]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE638%20-%20Intake%20Manifold%20Fuel%20Injected%20Component/PCE638.1002/PCE638.1002_A.jpg?resizeid=225&resizeh=50&resizew=50)
![Speedmaster® PCE638.1002 Downdraft Webber Stack Air Horns / Trumpets [SBC]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE638%20-%20Intake%20Manifold%20Fuel%20Injected%20Component/PCE638.1002/PCE638.1002_B.jpg?resizeid=225&resizeh=50&resizew=50)
![Speedmaster® PCE638.1002 Downdraft Webber Stack Air Horns / Trumpets [SBC]](https://product-arena.s3-us-west-1.amazonaws.com/ProcompElectronics/PCE638%20-%20Intake%20Manifold%20Fuel%20Injected%20Component/PCE638.1002/PCE638.1002_C.jpg?resizeid=225&resizeh=50&resizew=50)
Product Information
Overview
Speedmaster high quality aluminum replacement air horn kit to suit downdraft manifolds.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE638.1002 |
| Part Type: | Intake Manifold, Fuel Injected Component |
| Material: | Aluminum |
| Finish: | Natural |
| Quantity: | Sold as a set of 8. |
Warranty Information
12-Month Limited Worldwide Warranty
Prop 65 Warning
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Installation Guide
Our AI assistant generates a step-by-step guide for this product — covering installation, maintenance, and troubleshooting.
This AI-generated guide is for general reference only and does not constitute official Speedmaster product documentation. Always verify fitment, torque specifications, and safety requirements before installation.