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  3. SUPERINJECTORS FJ1059/12629927

SUPERINJECTORS FJ1059-12629927 Gdi Fuel Injector Set 835-11103 FJ1059/12629927 2012-21 3.6L V6

fits model: Impala. make: Buick, Cadillac, Chevy, Gmc.

12629927 Superinjectors Fj1059/12629927 Gdi Fuel Injector Set Of 6 For 2012-21 Buick Cadillac Chevy Impala Gmc 3.6l V6

( Brand: Superinjectors ), ( Manufacturer Part Number: FJ1059/12629927 ), ( Fuel Type: Gasoline ), ( Type: Fuel Injector ), ( Ipn: 835-11103 ), ( Manufacturer Warranty: 1 Year )

Review SUPERINJECTORS Fj1059/12629927 Gdi Fuel Injector Set Of 2012 21 Buick Cadillac Chevy Gmc 3.6l V6 fits IMPALA

The **SuperInjectors FJ1059/12629927 GDI Fuel Injector Set** is a high-performance, precision-engineered replacement for the original equipment (OEM) fuel injectors found in the **2012 2021 Buick Regal, Cadillac ATS/V, Chevrolet Impala/SS, and GMC Acadia** equipped with the **3.6L GM LS3/LT1 V6 engine**. Designed to meet or exceed the stringent demands of modern gasoline direct injection (GDI) systems, these injectors are built to deliver optimal fuel atomization, consistent spray patterns, and superior efficiency critical for maintaining peak engine performance, throttle response, and fuel economy. Crafted from **high-grade stainless steel and precision-machined components**, these injectors feature **advanced internal solenoids and ceramic-coated nozzles** that ensure long-lasting durability and resistance to carbon buildup, a common issue in high-mileage or high-performance applications. The **FJ1059/12629927 set** is engineered to match the exact specifications of the factory injectors, including **flow rates, spray angles, and electrical resistance**, guaranteeing seamless integration with the vehicle s fuel management system while supporting enhanced power delivery and smoother operation. Whether replacing worn-out OEM injectors, upgrading for a performance build, or addressing fuel delivery issues, these injectors provide a reliable, high-flow solution that helps restore or exceed factory performance standards. Built to withstand the rigors of daily driving as well as spirited acceleration, these injectors are an ideal choice for enthusiasts and mechanics seeking a cost-effective yet high-quality alternative to OEM parts.

### **Pros and Cons of buying a SuperInjectors FJ1059/12629927 GDI Fuel Injector Set for 2012 2021 3.6L V6 (Buick, Cadillac, Chevrolet Impala, GMC)**

#### **Pros:**

1. **OEM Replacement Quality** These injectors are designed to match or exceed the performance of the original General Motors (GM) fuel injectors used in the 3.6L V6 engines (LFX platform). They are built to GM s specifications, ensuring proper fuel delivery and engine efficiency.

2. **Compatibility** The part numbers (FJ1059/12629927) are widely recognized for fitting the 2012 2021 3.6L V6 engines across Buick, Cadillac, Chevrolet (Impala, Malibu, Equinox, etc.), and GMC models. This reduces the risk of purchasing a wrong injectors for your specific vehicle.

3. **Improved Fuel Efficiency and Performance** If your original injectors are failing or clogged, replacing them with high-quality aftermarket injectors like these can restore proper fuel atomization, leading to better engine response, smoother power delivery, and improved fuel economy.

4. **Durability and Longevity** SuperInjectors are known for their robust construction, often featuring stainless steel bodies and high-quality solenoids. This makes them more resistant to carbon buildup and wear compared to cheaper alternatives.

5. **Warranty and Support** SuperInjectors typically come with a warranty (usually 1 2 years), providing peace of mind against premature failure. The brand also offers technical support for installation and troubleshooting.

6. **Better Than OEM Replacement Parts** In some cases, OEM injectors from salvage yards or aftermarket OEM knockoffs may not perform as reliably. SuperInjectors are often considered an upgrade over these options.

7. **Easier Installation** These injectors are designed to fit standard GM fuel rail systems without requiring extensive modifications, making them a straightforward replacement for DIYers or professional mechanics.

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#### **Cons:**

1. **Cost** High-quality injectors like these are more expensive than basic aftermarket or salvage parts. A full set (typically 6 8 injectors, depending on the engine) can cost **$300 $600 **, depending on the retailer and any additional fees (shipping, labor if installed professionally).

2. **Potential for Overkill** If your engine is running fine and the injectors are not failing, upgrading to these may not provide noticeable benefits. In some cases, cleaning existing injectors (via ultrasonic cleaning or fuel system additives) could be a more cost-effective solution.

3. **Installation Complexity** While not overly difficult, replacing fuel injectors requires removing the fuel rail, which involves disconnecting fuel lines, sensors, and possibly the intake manifold. Improper installation (e.g., cross-threading, improper sealing) can lead to leaks or poor performance.

4. **Compatibility Variations** While these injectors are designed for the 3.6L V6, there are slight variations between models (e.g., 2012 vs. 2021). Double-checking your specific engine code (e.g., LFX, LFV) and year is crucial to ensure a perfect fit.

5. **Fuel System Dependencies** New injectors alone won t fix issues like a failing fuel pump, clogged fuel filter, or vacuum leaks. If other components in the fuel delivery system are degraded, the injectors may not perform optimally.

6. **Learning Curve for DIYers** If you re not experienced with fuel system repairs, mistakes during installation (e.g., improper gasket sealing, incorrect wiring) can lead to fuel leaks or electrical issues. Professional installation may be warranted.

7. **Limited Long-Term Savings** While these injectors are durable, they are not indestructible. If your engine has severe carbon buildup or other internal issues, the injectors may still fail prematurely, requiring replacement sooner than expected.

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### **Conclusion:**

The **SuperInjectors FJ1059/12629927 GDI fuel injector set** is a **high-quality, reliable replacement** for the 2012 2021 3.6L V6 engines in Buick, Cadillac, Chevrolet, and GMC vehicles. They offer **better performance, longevity, and compatibility** than many aftermarket alternatives, making them a strong choice if your original injectors are failing or if you re looking to restore optimal engine function.

However, the **higher cost** and **potential for unnecessary replacement** (if injectors are still functional) mean they are not always the best first option. **Cleaning existing injectors** or **testing for other fuel system issues** (e.g., fuel pressure, fuel quality) should be considered before committing to a full replacement.

If you re experiencing **rough idling, misfires, poor acceleration, or check engine lights (P0171/P0174, P0190, etc.)**, these injectors are a **solid upgrade**. If your engine is running fine but you re concerned about long-term reliability, they are also a **preventative measure worth considering**.

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### **Recommendation:**

1. **Diagnose First** Before purchasing, confirm that your injectors are the root cause of issues. Use an **OBD-II scanner** to check for fuel-related codes (e.g., P0171, P0174, P0190) and perform a **fuel pressure test** to ensure the fuel system is functioning correctly.

2. **Compare Prices** While SuperInjectors are premium, compare them with other reputable brands (e.g., **Denso, Delphi, Stanadyne**) or **OEM replacements** from salvage yards. Sometimes, slightly older or discontinued OEM injectors can be found at a lower cost with similar quality.

3. **Consider Cleaning First** If your injectors are not completely failed but are clogged, an **ultrasonic cleaning** (around **$100 $200 per injector**) may be a cheaper alternative. This is worth attempting before full replacement.

4. **Professional Installation** If you re not confident in your mechanical skills, have a **trusted mechanic** install them to avoid leaks or improper sealing.

5. **Buy from a Reputable Source** Purchase from **authorized dealers, reputable online retailers (RockAuto, Summit Racing, eBay verified sellers), or GM parts distributors** to avoid counterfeit or low-quality fakes.

6. **Pair with Fuel System Maintenance** Replace the **fuel filter**, use **high-quality fuel additives** (e.g., Seafoam, Techron), and consider an **in-line fuel filter** to extend the life of your new injectors.

**Final Verdict:**

If you need **reliable, long-lasting injectors** for your 3.6L V6 and are willing to invest in quality, **SuperInjectors are an excellent choice**. However, if you re on a tight budget or unsure about the condition of your injectors, **diagnose thoroughly and explore cheaper alternatives first**. For most performance or reliability-focused owners, these injectors are a **worthwhile upgrade**.

Details:

The same part number may also fits other years and model's. Assembly: Components, including nozzles, valves, and solenoids, are assembled by skilled technicians in a controlled environment to prevent contamination. Due to the light and screen setting difference, items color may be slightly different from pictures. Material Selection: High-quality materials, often heat-resistant alloys or stainless steel, are chosen for durability and performance.

2012 2013 2014 2015 2016 Buick Lacrosse 3.6L V6. 2012 2013 2014 2015 2016 2017 18 19 2020 Chevrolet Impala 3.6L V6. Testing: Rigorous testing, often using specialized equipment, is conducted to verify injector performance, including leak tests, flow rate and response time assessments. Design Engineers create detailed plans for the fuel injector, considering factors like flow rates, spray patterns, and compatibility with engine.

2018 Buick Enclave 3.6L V6. It typically includes steps like design, material selection, machining, assembly, testing and quality control. Calibration: The assembled injectors undergo calibration to ensure precise fuel delivery, adjusting factors like spray angle and flow rate according design specifications. Machining: Precision machining techniques are employed to shape injector components with tight tolerances, using CNC Computer Numerical Control machines for accuracy.

Specialized machinery is used for precision and consistency in crafting components, ensuring optimal fuel itemization combustion efficiency. 2014 2015 2016 Chevrolet Impala Limited 3.6L V6.

specifications carfuelinjector:

  • for models: Impala
  • for makes: Buick, Cadillac, Chevy, Gmc
  • brand: Superinjectors
  • mpn: Fj1059/12629927
  • fuel type: Gasoline
  • type: Fuel Injector
  • ipn: 835-11103
  • manufacturer warranty: 1 Year

seller carfuelinjector:

  • # reviews: 2867
  • city: FL/CA
  • rating: 99.2%

returns carfuelinjector:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days

general carfuelinjector:

  • Air Fuel Delivery > Fuel Injection Parts > Fuel Injectors
  • condition: New

shipping carfuelinjector:

  • transit: 5-9 Days
  • service: USPS Ground Advantage, USPS Priority Mail
  • class: Standard, Expedited
  • type: Fixed
  • cost: $0.00
  • carrier: USPS

offer carfuelinjector:

  • availability: In Stock
  • options: Ship-to-home
  • started: April 30, 2026
  • sold: 0
  • quantity: 10

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for models: impala, for makes: buick, cadillac, chevy, gmc, fuel type: gasoline, type: fuel injector, manufacturer warranty: 1 year,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 16171786514133881,
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