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If you drive a GMC Acadia, choosing the right fuel injector affects engine smoothness, starting behavior, and emissions. A proper injector provides steady fuel delivery and a reliable seal at the intake port so your engine runs smoothly under different loads. This guide presents seven shortlisted fuel injectors for the GMC Acadia that meet common durability and performance expectations. We evaluated each option for flow consistency, sealing reliability, and electrical compatibility to help you narrow the field. Read on to see the top picks and what to watch for when replacing injectors.
Looking for other parts? See all GMC Acadia parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Pjvmvo GM12594512 Replacement Fuel Injectors (Set of 8) |  |
| Most Popular A crowd favorite that many people choose with confidence | GM Genuine Parts 12663380 Fuel Injector |  |
| Best Quality Built to a higher standard if you want something more solid | Pjvmvo Set of 6 High-Pressure GDI Fuel Injectors for 3.6L GM Engines |  |
| Best Budget The cheapest option that still gets the job done reliably | ANGLEWIDE Fuel Injector Set for 3.6L GMC Acadia and Related GM Vehicles (6 pack) |  |
| Most Sold A high-volume bestseller chosen again and again | A-Premium Fuel Injectors Set of 6 — Compatible with GMC Acadia V6 3.6L |  |
| Best Value for Money The sweet spot between price and what you get | FIREMOTOO Fuel Injectors Pack of 6 for 3.6L V6 (fits GMC Acadia 2009-2011) |  |
| Best Overall The best all-around choice for most situations | A Plus Auto Fuel Injector Set of 8 for GM V8 4.8/5.3/6.0L (Replacement for 17113553) |  |
1. Pjvmvo GM12594512 Replacement Fuel Injectors (Set of 8)
| Brand | Pjvmvo |
|---|---|
| Model | 1008GMFI4512 |
| Manufacturer Part Number | 1008GMFI4512 |
| Fitment Note | Replaces GM12594512, GM217-2436 |
These Pjvmvo fuel injectors are sold as a direct replacement set intended to match GM12594512 and related factory numbers. They are packaged as a complete set of eight and are used to restore proper fuel delivery when original injectors are leaking, clogged, or causing drivability codes. The listing emphasizes VIN matching and pre-delivery inspection, and multiple customer reports indicate straightforward fit and restored engine performance after installation. Practical benefits include having a full bank replacement to re-balance fuel delivery and the convenience of receiving all eight injectors together. Limitations to consider are that this is an aftermarket part from a third-party brand rather than a factory unit, so long-term durability beyond initial fit and function may vary and periodic testing after installation is wise. Installer experience and correct calibration are important to achieve optimal idle smoothness and emissions behavior.
Best for: Reliability-focused buyers who prioritize restoring dependable, trouble-free running and want a full-bank replacement to address injector-related drivability issues.
Less Ideal for: Buyers seeking an exact factory-manufactured injector or those who need guaranteed long-term OEM-backed warranty support should consider factory-quality options instead.
- Sold as a complete set of eight for replacing a full cylinder bank
- Advertised VIN matching and pre-delivery inspection to help ensure correct fit
- Users report restored engine smoothness and resolution of control codes after installation
- Aftermarket unit so long-term reliability may differ from factory-quality injectors
- Fitment confirmation still requires vehicle verification before purchase
Verdict A practical, full-set aftermarket replacement that restores fuel delivery and resolves common injector issues but is not a factory-manufactured unit.
2. GM Genuine Parts 12663380 Fuel Injector
| Manufacturer | ACDelco |
|---|---|
| Brand | GM GENUINE PARTS |
| Item model number | 12663380 |
| Exterior | Machined |
This GM Genuine Parts 12663380 fuel injector is a factory-quality replacement designed to meter and atomize fuel for combustion in GM engines. It installs in place of the original injector and is controlled by the engine management computer to open and close the needle valve as needed. Typical use is to replace a failing injector during routine repairs or when a check engine light points to fuel delivery problems. Notable features include GM validation for fit, form, and function and machined exterior finish consistent with factory parts. Practical benefits are straightforward installation, expected compatibility with GM systems, and the assurance of a GM-recommended component that should match original performance and durability. Important limitations are mixed customer reports about units that appeared used or missing retention clips and some variability between batches, so inspect parts on arrival and be prepared to reuse or source harness clips if needed.
Best for: Convenience-driven buyers who prioritize a straightforward, factory-quality replacement that minimizes diagnostic time and fits directly into GM systems for quick DIY or shop installs.
Less Ideal for: Buyers seeking guaranteed brand-new aftermarket components with packaged accessory clips or those who need a matched set with inspected uniform appearance should consider alternatives or purchase clips separately.
- Factory-quality replacement validated by General Motors for fit and function.
- Machined exterior and manufacturer specification aim to match original performance and durability.
- Direct-fit design simplifies installation for routine injector replacement.
- Some buyers reported receiving used or take-off units rather than brand-new injectors.
- May arrive without harness retention clips, requiring reuse of old clips or separate purchase.
- Customer reports indicate occasional variability between batches in build details.
Verdict Choose this GM Genuine injector for a factory-validated, drop-in replacement if you want convenience and OEM-level fit, but inspect units on arrival because packaging and included clips can vary.
3. Pjvmvo Set of 6 High-Pressure GDI Fuel Injectors for 3.6L GM Engines
| Brand | Pjvmvo |
|---|---|
| Model | GMFI3445GDI |
| Fitment note | 3.6L GM GDI high-pressure injectors |
| OE Numbers | Replace# 12669384, 2173445 |
These Pjvmvo injectors are sold as a complete set of six for 3.6L GM GDI engines and are intended as factory-quality replacements for applications like the GMC Acadia. They are packaged individually and arrive ready for installation after basic cleaning and inspection. In use they restore proper fuel delivery for direct-injection engines, improving idle smoothness and drivability when original injectors are worn or leaking. The listing emphasizes pre-delivery inspection and testing, and the injectors are matched to OEM part numbers to simplify fitment checks. Practical benefits include receiving a matched set for all cylinders at once and lower cost compared with factory parts. Important limitations are that installation can be fiddly on direct-injection systems and may require special tools or professional service, and the seller notes tested parts can show residual fuel which is normal but means extra care during handling. For performance-focused owners this is a cost-effective route to refresh fuel delivery while retaining factory-style operation.
Best for: Performance-oriented owners who prioritize restoring factory-style fuel delivery and balanced cylinder performance on a GMC Acadia 3.6L engine while keeping costs below dealer-level replacements.
Less Ideal for: DIYers without experience on high-pressure direct-injection systems or owners seeking a plug-and-play dealer-installed replacement without any handling or installation complexity.
- Sold as a matched set of six so all cylinders receive uniform flow and timing
- Marketed and tested to match OEM part numbers for straightforward fitment to 3.6L GM engines
- Individually packaged with pre-delivery inspection and cleaning to reduce installation surprises
- Lower cost than factory replacements while aiming to deliver comparable performance
- Installation on GDI engines can be difficult and often requires dealer tools or a professional
- Seller notes tested parts may retain small amounts of fuel, requiring careful handling
Verdict A cost-effective, factory-quality matched set for refreshing fuel delivery on a GMC Acadia 3.6L, but expect professional-level installation on GDI systems.
4. ANGLEWIDE Fuel Injector Set for 3.6L GMC Acadia and Related GM Vehicles (6 pack)
| Inlet Connection Type | Barb |
|---|---|
| Maximum Operating Pressure | 3 Bars |
| Number of Ports | 12 |
| Compatible Engines | 3.6L (GM) — GMC Acadia fitment listed |
This ANGLEWIDE six-pack of fuel injectors is positioned as a cost-effective, direct-replacement option for GM 3.6L engines such as the GMC Acadia. The injectors come preassembled with O-rings and use a barb inlet connection, which simplifies swap-in installation for anyone comfortable with basic fuel‑rail work. The listing claims factory-quality performance to restore throttle response and fuel delivery lost to aging injectors, and each unit is inspected for leaks and pressure handling up to 3 bars. For everyday driving this set should reliably return drivability when original injectors are clogged or leaking. Expect easy mechanical fitment where the part numbers match, but note these are aftermarket components so long-term durability and exact calibration may differ from factory parts. Professional installation is recommended if you do not have experience with fuel systems, and return to a tune or injector testing if drivability issues persist after installation.
Best for: Budget-conscious owners seeking an affordable way to restore everyday drivability on a GMC Acadia 3.6L who prioritize cost and straightforward replacement over OEM-level longevity.
Less Ideal for: Drivers seeking high-performance tuning, motorsport use, or guaranteed factory-spec long-term durability should consider higher-end or factory replacement injectors instead.
- Sold as a complete six-injector set to replace all injectors at once
- Preinstalled O-rings and direct-replacement design for easier installation
- Manufacturing inspection for leaks and specified max operating pressure of 3 bars
- Aftermarket unit so long-term durability and spray pattern consistency may not match factory injectors
- Limited pressure rating listed may be lower than some performance applications
Verdict A wallet-friendly injector set that makes quick mechanical replacement easy for GMC Acadia owners but may not match factory longevity or performance tuning needs.
5. A-Premium Fuel Injectors Set of 6 — Compatible with GMC Acadia V6 3.6L
| Vehicle fit | GMC Acadia 2007-2008 V6 3.6L |
|---|---|
| Quantity | Set of 6 |
| Fuel type | Gas |
| Terminal type | Blade |
These A-Premium fuel injectors are a direct replacement option for the GMC Acadia 2007–2008 with the 3.6L V6. Sold as a set of six, they are built with dual electrical terminals and O-ring seals for straightforward installation into the factory fuel rail. The listing specifies static and dynamic flow figures and says the nozzles are shaped for improved fuel atomization, which in practice helps maintain consistent spray pattern and idle quality after an injector replacement. Typical use is a direct swap when original injectors are leaking, clogged, or failing to deliver correct fuel metering. The practical benefits are quick fitment, restored drivability, and a one-year unlimited-mileage guarantee from the brand. Limitations to note are that these are aftermarket units rather than factory parts and may require careful handling during installation to avoid connector or O-ring damage; flow tolerance and long-term durability can vary compared with factory-quality injectors. Also calibration or throttle adaptation by the engine control unit may be needed after installation.
Best for: Risk-averse mainstream buyers who prioritize restoring reliable daily drivability on a GMC Acadia 3.6L and prefer a matched set replacement with a straightforward install path.
Less Ideal for: Drivers seeking factory-manufactured injectors for long-term OEM equivalence or those planning high-performance tuning should consider alternative factory-quality or performance injectors.
- Sold as a matched set of six for full-bank replacement on the Acadia V6
- Dual terminal blade connector design matches factory electrical connections
- O-ring sealed nozzles for straightforward leak-free installation when fitted correctly
- Manufacturer provides static and dynamic flow figures to help match original fuel delivery
- Aftermarket design so long-term durability may differ from factory-quality injectors
- May require ECU adaptation or professional installation to ensure correct fuel trim and idle behavior
Verdict A practical, matched set of aftermarket injectors that restores fuel delivery for a GMC Acadia 3.6L with an emphasis on ease of replacement rather than factory-original longevity.
6. FIREMOTOO Fuel Injectors Pack of 6 for 3.6L V6 (fits GMC Acadia 2009-2011)
| Compatibility | GMC Acadia 3.6L V6 2009-2011 |
|---|---|
| Injector type | 6-hole orifice |
| Package quantity | 6 injectors |
| Inlet/Outlet connection | Compression |
This FIREMOTOO kit supplies all six fuel injectors needed for the 3.6L V6 in the GMC Acadia (2009–2011). Each injector uses a six-hole orifice pattern and comes with O-rings for sealing, so the set is intended for direct replacement during a fuel-system refresh. The manufacturer highlights CNC-machined spray holes and uniform atomization aimed at smoother idle, restored power, and improved fuel economy compared with worn injectors. Installation is straightforward for a competent DIYer or a local shop and the parts arrive individually packaged to reduce damage risk. Keep in mind these are aftermarket replacements rather than factory parts, so while buyers report good fit and no leaks, long-term durability beyond initial miles can vary and professional cleaning or calibration may be needed if the vehicle has other fuel-system issues. This pack is practical for replacing all injectors at once on an Acadia to address rough idle, higher fuel use, or misfires and offers a cost-effective way to refresh the fuel delivery system.
Best for: Practical optimizers who want an affordable, full-bank injector replacement to restore smooth running and improve fuel economy on a GMC Acadia 3.6L V6 without overpaying for dealer parts.
Less Ideal for: Owners planning high-performance tuning or who require verified OEM flow and electrical matching should consider calibrated or manufacturer-specified injectors instead.
- Full six-injector set covers the entire 3.6L V6 bank so all injectors are replaced at once
- Six-hole orifice design and CNC-drilled spray holes for consistent atomization and smoother combustion
- Includes O-rings and individual packaging which simplifies installation and reduces leak risk
- Listed compatibility explicitly includes GMC Acadia 3.6L V6 2009–2011 so fitment matches the target vehicle
- Aftermarket unit so longevity may differ from factory-quality injectors and could require periodic servicing
- No explicit flow-rate or electrical specs provided so professional verification is recommended for tuned engines
Verdict A complete, budget-minded six-injector replacement for the GMC Acadia 3.6L V6 that restores spray pattern and sealing but is an aftermarket option rather than a factory part.
7. A Plus Auto Fuel Injector Set of 8 for GM V8 4.8/5.3/6.0L (Replacement for 17113553)
| Quantity | 8 injectors |
|---|---|
| Engine fit | V8 4.8/5.3/6.0L |
| Replaces part numbers | 17113698, FJ315, MP-10006, 8171136980, FJ10062 |
This eight-piece injector set is a direct-replacement style option intended to restore fuel delivery on compatible GM V8 engines. Installers use the set to replace factory injectors when symptoms like rough idle, poor fuel economy, or misfires point to worn injectors. The listing notes compatibility with many GM models and replaces several common part numbers, which simplifies buying the correct kit for matching engine families. Because these are upgraded four-hole injectors they should provide more consistent spray patterns than heavily worn originals, helping idle stability and drivability after proper installation and calibration. Expect typical aftermarket trade-offs: you get a full matched set at once but may need to verify fit and electrical connectors against the vehicle before fitting, and professional installation or fuel system cleaning is recommended to avoid downstream clogging. This kit is best when you need to replace all injectors together to return a V8 engine to reliable running condition.
Best for: Balanced buyers who prioritize restoring reliable drivability on older GM V8s and prefer buying a complete matched injector set rather than individual units.
Less Ideal for: Drivers who want plug-and-play, vehicle-specific OEM replacements or who prefer a dealer-installed injector service tailored exactly to their model and year.
- Complete matched set of eight simplifies replacement for V8 engines
- Upgraded four-hole design for improved spray consistency over worn injectors
- Lists direct-replace part numbers to aid compatibility checks
- Covers a wide range of GM V8 applications so one kit fits multiple engine families
- Compatibility list does not explicitly name the GMC Acadia so fit must be confirmed before purchase
- Aftermarket injectors may require professional installation and fuel system service to perform optimally
Verdict A full set of upgraded four-hole aftermarket injectors that restores fuel delivery on compatible GM V8 engines but requires fit confirmation and proper installation for best results.
Choosing the Right GMC Acadia Fuel Injector: Key Factors to Consider
Flow Rate and Consistency
Flow rate determines how much fuel the injector delivers at a given pulse width and pressure. Consistent flow across injectors helps maintain balanced combustion across cylinders, which reduces rough idling and uneven power delivery.
Variations in flow can lead to fuel trim adjustments that mask the underlying issue, so pick injectors with published flow specs and tight tolerances. For replacement scenarios, matching the original flow characteristics helps preserve drivability and emissions behavior.
Sealing and O-Ring Quality
Good sealing prevents air or fuel leaks at the intake port and rail connections. Faulty seals can cause vacuum leaks or fuel seepage, both of which affect idle, fuel economy, and safety.
Look for high-quality O-rings and seat finishes that maintain a secure fit under thermal cycling. Proper sealing also reduces the risk of external fuel odor and helps the injector remain properly positioned over time.
Electrical Connector Compatibility
Injectors must mate cleanly with the vehicle wiring to ensure reliable signal transmission and proper injector firing. Poor connector fit can cause intermittent misfires or resistance changes that affect injector timing.
Verify connector type, pin configuration, and insulation quality. Durable terminals and strain-relief features help prevent wiring fatigue, especially in areas subject to heat and vibration.
Spray Pattern and Atomization
The injector spray pattern affects how fuel mixes with intake air and ultimately how completely the charge burns. Proper atomization promotes efficient combustion, which improves throttle response and reduces unburned hydrocarbons.
Different engines favor different spray geometries, so choose an injector with a spray pattern compatible with the Acadia's intake and combustion chamber design. Consistent atomization across injectors supports even cylinder-to-cylinder performance.
Materials and Corrosion Resistance
Internal materials and surface treatments influence longevity and resistance to deposits. Corrosion-resistant components and protective coatings help keep ports and pintles operating smoothly over time.
Materials that tolerate gasoline additives and ethanol blends reduce the risk of sticking or clogging. Durable construction is especially important if the vehicle sees high mileage or operates in humid and corrosive environments.
Serviceability and Testing Support
Access to testing data and the ability to bench-test injectors simplifies diagnosis and future repairs. Injectors that are compatible with common test equipment make it easier to verify flow and electrical function before installation.
Also consider whether replacement seals and service parts are readily available, since routine cleaning or seal replacement can extend injector life. Clear specifications for pulse width response and resistance help technicians evaluate injector condition.
FAQ
How do I know if a GMC Acadia fuel injector is failing?
Symptoms often include rough idle, reduced engine responsiveness, increased misfires, or fuel odor. You may also notice uneven acceleration or an illuminated check engine light with related diagnostic codes. These signs often prompt further testing rather than immediate replacement.
Can fuel injector cleaning restore performance?
Cleaning can help if injectors are partially clogged by deposits, improving spray pattern and flow consistency. The effectiveness depends on the nature and severity of the deposits. In some cases, cleaning combined with new seals can extend service life, but severely damaged injectors may still require replacement.
What tests diagnose injector problems?
Common checks include electrical resistance measurement, pulse testing while the engine is running, and flow/volume testing on a bench. Observing spray pattern under pressure can reveal poor atomization or asymmetric sprays. Diagnostics usually combine several tests to confirm the issue.
Are fueling system leaks obvious to detect?
Not always. Fuel injector leak symptoms may include fuel odor, stains around the injector area, or slight drips when the system is pressurized. Small leaks can be intermittent and may show up as poor idle or fuel trim changes before becoming visually obvious.
Is it necessary to replace all injectors at once?
It depends on condition and mileage. If only one injector shows failure or damage, replacing just that unit can be appropriate. However, if multiple injectors show similar wear or the vehicle has high mileage, replacing several to match flow characteristics can help maintain balanced engine performance.
Will performance-oriented injectors affect reliability?
Injectors designed for increased flow or altered spray characteristics can improve power potential but may require matching to fueling strategy and engine management. Without proper tuning, changes can create drivability or emissions challenges. Consider compatibility and whether additional calibration is needed.
How We Chose the Best GMC Acadia Fuel Injector
We selected injectors based on criteria directly tied to real-world performance in a GMC Acadia. Core evaluation dimensions included flow rate consistency under varied load, sealing integrity to prevent vacuum and fuel leaks, electrical connector compatibility with Acadia wiring, and durable materials and coatings to resist clogging and corrosion. We also considered spray pattern stability to support efficient combustion and reduced misfires, plus build tolerances that influence idle quality and throttle response. We excluded units with unclear specifications, missing compatibility details for the Acadia, and products lacking basic durability features such as corrosion-resistant internals. We prioritized measurable attributes over marketing claims and focused on factors that technicians and owners commonly report as important during service. The resulting list reflects injectors that meet those technical filters and practical expectations for use in a GMC Acadia.
Our full evaluation process is outlined in our review methodology.
Conclusion
Choosing the right injector for a GMC Acadia means balancing consistent flow, reliable sealing, and electrical compatibility. Prioritize injectors with clear specifications for flow rate and connector type, along with materials that resist corrosion and deposits. Accept tradeoffs between long-term serviceability and performance upgrades by matching the injector attributes to how you use the vehicle. If in doubt, focus on units that preserve original flow characteristics and offer good sealing and testing support.
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