


🚗 Upgrade your ride with GM precision – because your engine deserves the best!
The GM Genuine Parts 12660709 Fuel Injector Rail is a high-quality, aluminum-bodied component designed specifically for Chevrolet, Buick, GMC, and Cadillac vehicles. It offers a precise, vehicle-specific fit and meets GM Original Equipment standards. Installation requires professional programming and specialized tools, ensuring optimal fuel injection performance and reliability.





| Brand | GM GENUINE PARTS |
| Fit Type | Vehicle Specific Fit |
| Vehicle Service Type | Van |
| Item dimensions L x W x H | 18.38 x 14.12 x 8.88 inches |
| Item Weight | 1.86 Pounds |
| Specification Met | OE |
| Auto Part Position | Center |
| Outlet Connection Size | 0.25 Inches |
| Inlet Connection Size | 0.25 Inches |
| Outlet Connection Type | Barb |
| Body Material | Aluminum |
| Inlet Connection Type | Threaded |
| Gas Type | Gasoline |
| Mounting Type | Tank Mount |
| Operation Mode | Mechanical |
| Product Grade | High |
| Automotive Fit Type | Vehicle Specific Fit |
| Manufacturer | GM Genuine Parts |
| UPC | 808709949442 |
| Model | GM Original Equipment |
| Item Weight | 1.86 pounds |
| Product Dimensions | 18.38 x 14.12 x 8.88 inches |
| Item model number | 12660709 |
| Exterior | Machined |
| Manufacturer Part Number | 12660709 |
P**N
It’s legit GM for TBSS mani
Legit GM part. Fits TBSS cathedral port Gen4 intake manifold.
L**R
Ceo
Fits well with no adjustment
R**.
Only for tbss intake.
Works for tbss intake only.
B**R
It's OEM!
This is a Ginuwine factory part, what else is there to say lol fit and finishes perfect
P**O
Perfect fit for my build !!!
Same size same quality had 0 complaints these rails will work with you’re 99-02 stock injectors if you don’t want to get new injectors have 0 issues
B**R
Fuel rail
Was as described
T**R
OEM gm fuel rail. 100% authentic
Bought rail for custom built engine and love the OEM parts from gm. Authentic gm decals on box with holographic decal to prove its real gm. I'm building a custom gen 3 5.3 LS with trailblazer SS intake manifold. Fits perfectly like it should. Very happy but yet expensive like OEM gm parts should be
K**R
Perfect fit
Purchased to install on my 01 Silverado 5.3Fit perfect on the trailblazer ss intake and stock injectors all went together great do have to change up purge valve and modify throttle cable bracket or get tbss style throttle cable bracket would purchase again
Trustpilot
2 months ago
1 month ago