Speedmaster®
Downdraft Stack EFI Intake Manifold Injector Shim Only [Single]
![Speedmaster® PCE599.1004 Downdraft Stack EFI Intake Manifold Injector Shim Only [Single]](https://www.speedmaster79.com/core/media/media.nl?id=15208473&c=3959037&h=sdPi2Dqq1VPBXCQ1TTEh8_Hbb3iNk0YSeOr8jA5hAbnDZI9l&f=PCE599.1004.jpg&resizeid=224&resizeh=600&resizew=600)
![Speedmaster® PCE599.1004 Downdraft Stack EFI Intake Manifold Injector Shim Only [Single]](https://www.speedmaster79.com/core/media/media.nl?id=15208470&c=3959037&h=fnpW_gZDze3C-kBZPP_GdCEhBj62w7Fj1N3fntPUMBhO7Lqj&f=PCE599.1004_A.jpg&resizeid=224&resizeh=600&resizew=600)
![Speedmaster® PCE599.1004 Downdraft Stack EFI Intake Manifold Injector Shim Only [Single]](https://www.speedmaster79.com/core/media/media.nl?id=15208472&c=3959037&h=5z3ZHMmMWqaxTp3sLupS6CpzOptXomYSYTxSqfxyri9DmkJS&f=PCE599.1004_B.jpg&resizeid=224&resizeh=600&resizew=600)
![Speedmaster® PCE599.1004 Downdraft Stack EFI Intake Manifold Injector Shim Only [Single]](https://www.speedmaster79.com/core/media/media.nl?id=15208471&c=3959037&h=DmjDyG8J82YIntWRPrrdSEzuuMllB4gweI9P-cG1Am1CYown&f=PCE599.1004_C.jpg&resizeid=224&resizeh=600&resizew=600)
Product Information
Overview
Speedmaster intake manifold injector shims ensure optimal fitment and alignment for your fuel injectors.
Specs
| Brand: | Speedmaster |
| Part Number: | PCE599.1004 |
| Part Type: | Fuel Injector Spacer |
| Thickness (in.): | 0.160 in. |
| Outer Diameter (in): | 0.656 in. |
| Inner Diameter (in.): | 0.535 in. |
| O-Rings Included: | No |
| Fuel Injector Spacer Material: | Aluminum |
| Quantity: | Sold Individually. |
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.