OEM Replacement TBI Fuel Injector 831-15104
Fits GM 2.5L “Iron Duke” Engines (Single Injector Systems)
Restore proper fuel delivery and performance with this OEM-quality remanufactured throttle body fuel injector. Designed for early GM TBI systems, this injector is a direct replacement for the original unit and installs with no modifications required.
This injector is ideal for resolving common issues such as hard starting, rough idle, poor fuel atomization, and fuel delivery inconsistencies in aging throttle body systems.
Key Features
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Direct OEM replacement – plug-and-play installation
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Designed for throttle body injection (TBI) systems
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Restores proper spray pattern and fuel delivery
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Professionally remanufactured and tested
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Meets or exceeds original factory specifications
Vehicle Fitment
Compatible with a wide range of GM vehicles equipped with the 2.5L 4-cylinder engine (Iron Duke), including:
- 1990–1992 Buick Century 2.5L L4
- 1989–1991 Buick Skylark 2.5L L4
- 1990 Chevrolet Celebrity 2.5L L4
- 1991–1993 Chevrolet LLV 2.5L L4
- 1991–1993 Chevrolet S10 2.5L L4
- 1991–1993 GMC Sonoma 2.5L L4
- 1989–1991 Oldsmobile Cutlass Calais 2.5L L4
- 1990–1992 Oldsmobile Cutlass Ciera 2.5L L4
- 1990 Oldsmobile Cutlass Cruiser 2.5L L4
- 1990–1991 Pontiac 6000 2.5L L4
- 1989–1991 Pontiac Grand Am 2.5L L4
(Please verify your part number before ordering to ensure proper fitment.)
What’s Included
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(1) Remanufactured TBI Fuel Injector
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New seals installed (where applicable)
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Ready for installation
Warranty
Backed by our lifetime warranty for long-term reliability and peace of mind.
All orders are shipped within 1-2 business days from when payment is received.
Transit time varies based on service type requested:
First Class Mail: 3-7 business days
Priority Mail: 2-3 business days
Express Mail: 1-2 business days
Free Shipping options are generally First Class Mail.
For international shipments, make sure your address information is accurate. CS Performance assumes no liability once package leaves the United States. Please be sure your country is accepting packages from the US and you are aware of any duties or taxes your country may require upon package arrival.
Core Returns are completely optional and not required. When you order a set of fuel injectors from us, eligible part numbers will have a paper slip inside the shipping box. This paper slip will have all of the additional information regarding the return of your old cores for a varying price (depending on the part number you are looking to send in).
If your old cores are not eligible to be returned, you will not receive this paper slip within the shipping box, and no further action is required.
Thank you for your time and business, we appreciate it greatly!
