Silverado Fuel Injectors
Silverado Fuel Injectors: Fitment Guide by Year, Engine & Part Number
Which fuel injectors fit your Chevrolet Silverado? The correct injector depends on your truck’s model year, engine, fuel type, engine code, and original OEM part number.
Use this guide to identify the correct fuel injectors for your Chevrolet Silverado 1500, 2500HD, or 3500HD. Once you find the correct part number, select the corresponding product to view complete specifications, availability, and pricing.
Important: Do not choose Silverado fuel injectors by engine size alone. Chevrolet used different injectors in trucks with the same engine displacement. Always compare the OEM number, electrical connector, injector body, engine code, and gasoline or Flex Fuel designation before ordering.
Precision Auto Injectors professionally rebuilds genuine factory-original GM, Delphi, Denso, Rochester, and Bosch fuel injectors. Every complete set is cleaned, serviced, tested, and flow matched before shipment.
View the Silverado Fitment Chart
Chevrolet Silverado Fuel Injector Fitment Chart
| OEM Part Number | Common Years | Engine | Fuel Type | Fitment Notes |
|---|---|---|---|---|
| 17103146 / 17120683 | 1996–2000 | 7.4L / 454 V8 | Gasoline | Factory-style Rochester injector |
| Bosch four-hole upgrade | 1996–2000 | 7.4L / 454 V8 | Gasoline | Direct-fit upgrade for compatible applications |
| 25317628 | 1999–2007 | 4.8L / 5.3L / 6.0L | Non-flex gasoline | Match the original injector number |
| 12580426 / 25326903 | Verify application | 5.3L V8 | Flex Fuel / E85 | Confirm factory Flex Fuel equipment |
| 17124531 | 2001–2007 | 8.1L Vortec V8 | Gasoline | Common Silverado 2500HD / 3500HD application |
| 12580681 | 2004–2010 | 4.8L / 5.3L / 6.0L / 6.2L | Verify application | Original part-number confirmation required |
| 12594512 | 2007–2009 | 5.3L LC9 V8 | Flex Fuel / E85 | Confirm engine code and original number |
| 12613411 | 2010–2013 | 4.8L / 5.3L / 6.0L | Verify application | Match the original injector number |
| Denso 84 lb/hr | Modified applications | Compatible LS-powered builds | As configured | Performance use; professional tuning required |
This chart is a general reference. Always confirm the original injector number, connector, engine code, vehicle calibration, and fuel type before ordering.
How to Find the Correct Fuel Injectors for Your Silverado
Start by entering your truck’s year, make, model, and engine into the vehicle search tool at the top of our website. Then compare the suggested injector with the number and physical design of the injectors currently installed in your truck.
Verify all of the following before placing your order:
- Chevrolet Silverado model year
- Silverado 1500, 2500HD, or 3500HD model
- Engine displacement
- Engine code
- Gasoline-only or Flex Fuel/E85 system
- OEM number printed on the original injector
- Electrical connector style
- Injector body and nozzle design
Silverado 5.3L owners: Gasoline and Flex Fuel trucks may use completely different injectors even when the engine displacement is the same. Matching the original injector number is the safest way to confirm fitment.
Chevrolet Silverado Fuel Injectors by Year, Engine & OEM Part Number
1996–2000 Chevrolet 7.4L 454 Vortec Fuel Injectors
Compatible Chevrolet full-size trucks equipped with the 7.4L 454 CID Vortec V8 may use genuine Rochester fuel injectors or a direct-fit Bosch four-hole upgrade. Earlier applications may be identified as Chevrolet C/K trucks with the Silverado trim package.
Genuine OEM Rochester 7.4L Fuel Injectors
- Common years: 1996–2000
- Engine: 7.4L / 454 CID V8
- Common OEM numbers: 17103146 / 17120683
- Manufacturer: Rochester / GM
- Injector type: Factory-style OEM replacement
- Quantity: Set of 8
This option is intended for customers who want to retain the original Rochester injector design and factory-style calibration.
Shop Chevrolet 7.4L Rochester Injectors
Bosch Four-Hole 7.4L Fuel Injector Upgrade
The Bosch four-hole injector is a direct-fit upgrade for compatible 1996–2000 Chevrolet 7.4L Vortec applications. Its multi-hole nozzle is designed to provide improved fuel atomization while retaining factory-style installation.
- Direct-fit design for compatible applications
- Four-hole Bosch nozzle
- Improved fuel atomization
- Professionally serviced and flow matched
- Complete set of 8 injectors
Shop the 7.4L Bosch Four-Hole Upgrade
1999–2007 Chevrolet Silverado 4.8L, 5.3L & 6.0L Non-Flex Fuel Injectors
Many early Chevrolet Silverado trucks equipped with gasoline-only 4.8L, 5.3L, or 6.0L engines use genuine Delphi 25317628 fuel injectors.
- OEM part number: 25317628
- Manufacturer: Delphi / GM
- Common engines: 4.8L, 5.3L, and 6.0L
- Fuel system: Gasoline / non-flex
- Common application: Chevrolet Silverado
- Quantity: Set of 8
These are intended as factory-style replacements when the number on your original injector matches. ECU tuning is normally not required when the correct OEM-specification injector is installed in its original application.
Shop Silverado 25317628 Injectors
Chevrolet Silverado 5.3L Flex Fuel Injectors — Denso 12580426 / 25326903
Compatible Chevrolet Silverado 5.3L Flex Fuel trucks may use genuine Denso injectors carrying GM part numbers 12580426 and 25326903.
- OEM part numbers: 12580426 / 25326903
- Manufacturer: Denso / GM
- Engine: 5.3L V8
- Fuel system: Flex Fuel / E85 compatible
- Approximate flow rating: 32 lb/hr
- Connector style: EV6 / USCAR
- Quantity: Set of 8
Fitment warning: Confirm that your Silverado is equipped for Flex Fuel before ordering. These injectors should not automatically be substituted for gasoline-only Silverado 5.3L injectors.
Shop Silverado 12580426 / 25326903 Injectors
2001–2007 Chevrolet Silverado 2500HD & 3500HD 8.1L Fuel Injectors
Compatible Chevrolet Silverado HD trucks equipped with the 8.1L Vortec big-block V8 may use Delphi 17124531 fuel injectors.
- OEM part number: 17124531
- Manufacturer: Delphi / GM
- Engine: 8.1L Vortec V8
- Fuel system: Gasoline
- Common models: Silverado 2500HD and Silverado 3500HD
- Quantity: Set of 8
Each complete set is professionally rebuilt, leak tested, spray-pattern verified, dynamically tested, and flow matched for balanced fuel delivery across all eight cylinders.
Shop Silverado 8.1L 17124531 Injectors
2004–2010 Chevrolet Silverado Fuel Injectors — Delphi 12580681
Delphi 12580681 fuel injectors were used in select Chevrolet Silverado V8 applications. Exact fitment can vary by model year, engine, fuel system, and calibration, so the original injector number must be confirmed before ordering.
- OEM part number: 12580681
- Manufacturer: Delphi / GM
- Common engine families: 4.8L, 5.3L, 6.0L, and 6.2L
- Fuel system: Verify application
- Quantity: Set of 8
- Required check: Match the number on the original injector
Shop Silverado 12580681 Injectors
2007–2009 Chevrolet Silverado 5.3L LC9 Flex Fuel Injectors — Denso 12594512
Genuine Denso 12594512 fuel injectors are available for compatible Chevrolet Silverado trucks equipped with the 5.3L LC9 Flex Fuel engine.
- OEM part number: 12594512
- Manufacturer: Denso / GM
- Common years: 2007–2009
- Engine: 5.3L LC9 V8
- Fuel system: Flex Fuel / E85
- Quantity: Set of 8
These injectors are not interchangeable with every gasoline-only Chevrolet Silverado 5.3L injector. Verify the engine code, fuel type, and original part number before ordering.
Shop Silverado 12594512 Injectors
2010–2013 Chevrolet Silverado 4.8L, 5.3L & 6.0L Injectors — GM 12613411
GM 12613411 fuel injectors are available for compatible Chevrolet Silverado applications equipped with 4.8L, 5.3L, or 6.0L V8 engines.
- OEM part number: 12613411
- Manufacturer: Genuine GM OEM
- Common years: 2010–2013
- Common engines: 4.8L, 5.3L, and 6.0L
- Approximate advertised flow: 50 lb/hr
- Quantity: Set of 8
- Required check: Verify the number on the original injector
Similar-year Silverado engines may use different injectors. Confirm the complete application and original injector number before purchasing.
Shop Silverado 12613411 Injectors
84 lb/hr High-Flow Injectors for Modified Chevrolet Silverado LS Applications
For turbocharged, supercharged, or otherwise modified LS-powered Chevrolet Silverado builds requiring substantially more fuel than a factory injector can provide, decapped Denso 84 lb/hr high-flow fuel injectors are available.
- Flow rating: Approximately 84 lb/hr
- Injector base: Genuine Denso
- Application: Modified LS-powered vehicles
- Use: Performance applications only
- Tuning: Required
Professional tuning required: High-flow injectors are not direct stock replacements. The ECU must be correctly calibrated using suitable injector data for the engine, fuel system, pressure, and intended power level.
Shop Silverado 84 lb/hr Injectors
Symptoms of Failing Chevrolet Silverado Fuel Injectors
A clogged, leaking, restricted, unbalanced, or electrically failing injector may cause noticeable engine and drivability problems.
- Rough or uneven idle
- Hard starting or extended cranking
- Hesitation during acceleration
- Loss of power under load
- Poor fuel economy
- Strong gasoline odor
- Random or cylinder-specific misfires
- P0300 through P0308 trouble codes
- Rich or lean fuel-trim codes
- Black exhaust smoke
- Fuel leaking into a cylinder
- Fuel contamination in the engine oil
- Illuminated Check Engine Light
An injector may pass a basic resistance test and still have a restricted internal filter, poor spray pattern, delayed opening, leakage, or uneven fuel delivery. Professional bench testing evaluates how the injector performs while operating under controlled conditions.
Why Flow Matching Matters on a Chevrolet Silverado V8
Every cylinder depends on its injector to deliver a consistent amount of fuel. One restricted injector can cause a cylinder to run lean, while one leaking or excessive-flow injector may create a rich cylinder, rough starting, fuel odor, cylinder wash, or contaminated engine oil.
Precision Auto Injectors dynamically tests and matches the injectors as a complete set. When applicable, we target approximately 2% flow balance across the set to support consistent fuel delivery from cylinder to cylinder.
Our Chevrolet Silverado Fuel Injector Rebuilding Process
- Visual inspection of the injector body, connector, seals, and nozzle
- Electrical resistance and coil-response testing
- Injector opening and response-consistency testing
- Leak-down and pressure testing
- Ultrasonic cleaning
- Reverse flushing to remove internal contamination
- Replacement of filters, O-rings, caps, retainers, and spacers as applicable
- Dynamic and static flow testing on professional ASNU equipment
- Spray-pattern inspection and verification
- Flow matching across the complete injector set
- Final inspection before packaging and shipment
Why Choose Genuine OEM Chevrolet Silverado Fuel Injectors?
Genuine OEM injectors were engineered for the Silverado’s original fuel system. They provide the intended electrical resistance, connector design, physical dimensions, opening response, fuel volume, and spray pattern.
Low-cost aftermarket injectors may look similar but can differ in coil quality, internal construction, opening speed, nozzle calibration, and actual fuel delivery. Precision Auto Injectors specializes in rebuilding genuine factory-original injector cores instead of selling unverified copies.
Why Buy Silverado Fuel Injectors From Precision Auto Injectors?
- Genuine OEM injector cores
- Professionally rebuilt in-house
- ASNU bench tested
- Ultrasonically cleaned
- Reverse flushed
- Leak and pressure tested
- Spray-pattern verified
- Dynamically flow tested
- Flow matched as a complete set
- New service components installed as applicable
- Lifetime replacement warranty
- 60-day hassle-free returns
Frequently Asked Questions About Chevrolet Silverado Fuel Injectors
How do I know which fuel injectors fit my Chevrolet Silverado?
Use the model year, engine code, fuel type, and OEM number printed on your original injector. The part number is more reliable than selecting an injector by engine size alone.
Are all Chevrolet Silverado 5.3L fuel injectors the same?
No. Chevrolet used several different injectors on 5.3L Silverado engines. Gasoline-only and Flex Fuel trucks may use different flow rates, electrical characteristics, and part numbers.
What is the difference between 25317628 and 25326903 injectors?
Delphi 25317628 injectors are commonly associated with gasoline-only applications, while Denso 25326903 injectors are commonly used in compatible Flex Fuel applications. Always verify the original number and complete vehicle application.
Which fuel injectors fit a Chevrolet Silverado 8.1L?
Many compatible Silverado 2500HD and 3500HD trucks equipped with the 8.1L Vortec V8 use Delphi 17124531 injectors. Confirm the number printed on the original injector before purchasing.
Do stock replacement Silverado fuel injectors require tuning?
Correct OEM-specification replacement injectors normally do not require tuning when installed in their intended factory application. High-flow or modified injectors require professional ECU calibration.
Are your Chevrolet Silverado fuel injectors new or rebuilt?
Our listings identify the exact condition of each injector set. Rebuilt sets use genuine OEM injector cores that are professionally cleaned, serviced, tested, and flow matched.
Do the injectors include new O-rings?
New service components are installed as applicable to the injector design. Review the individual product listing for the exact components included with your set.
Can you help identify my Silverado fuel injectors?
Yes. Send us your Silverado’s model year, engine size, fuel type, VIN information, and clear photographs of the original injector and any numbers printed on it.
Shop Chevrolet Silverado Fuel Injectors
Browse our available genuine rebuilt OEM fuel injector sets for the Chevrolet Silverado 1500, Silverado 2500HD, and Silverado 3500HD. For the most accurate result, search using the OEM part number printed on your original injector.