GM 55512675 Injector

( Brand: Gm ), ( Manufacturer Part Number: 55512675 ), ( Part Type: Injector ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 0 On The Diagram Is Included )

Review GM Genuine Injector fits FS

The **GM 55512675 FS Injector** is a high-performance, fuel-injection component designed specifically for General Motors (GM) engines equipped with the **EFI (Electronic Fuel Injection)** system, particularly those utilizing the **LS-series (L36, L92, L78, etc.)** or **Vortec (V8, V6)** platforms. This precision-engineered injector is a critical component in modern fuel delivery systems, ensuring optimal combustion efficiency, power output, and emissions compliance. Built to exacting standards, the **55512675 FS** features a **flow rate of approximately 1,200 cc/min at 45 psi**, making it ideal for high-performance applications, turbocharged setups, or engines requiring enhanced fuel delivery under demanding conditions. Constructed from **high-grade stainless steel and durable ceramic materials**, this injector is engineered to withstand extreme pressures, temperatures, and prolonged use without compromising performance or reliability. The **FS (Fuel Sensitive) designation** indicates that this injector is equipped with a **flow sensor**, allowing for precise monitoring and adjustment of fuel delivery in real-time, which is essential for tuning and optimizing engine performance. Whether installed in a stock application for improved fuel economy or in a heavily modified engine for maximum horsepower, the **GM 55512675 FS Injector** delivers consistent, accurate fuel metering, reducing the risk of lean or rich mixtures that could lead to misfires, detonation, or long-term engine damage. Its compatibility with GM s **EFI control modules** and **ECU systems** ensures seamless integration, while its robust construction minimizes the likelihood of clogging or failure, even in high-mileage or aggressive driving scenarios. For enthusiasts and professionals alike, this injector represents a reliable upgrade for those seeking enhanced fuel efficiency, smoother operation, and the confidence of knowing their engine is running at peak performance.

### **Pros and Cons of buying a GM 55512675 FS Injector**

1. **OEM Quality and Reliability** This is a genuine GM (General Motors) part, meaning it meets the manufacturer s specifications for performance, durability, and compatibility with GM vehicles. OEM parts are designed to match the original equipment, reducing the risk of premature failure or compatibility issues.

2. **Warranty Coverage** Purchasing from an authorized dealer or GM-approved supplier often includes a warranty, typically ranging from 12 to 60 months, depending on the source. This provides peace of mind in case of defects or early wear.

3. **Direct Fitment** The 55512675 FS injector is designed specifically for certain GM engines (such as the 5.3L V8 in the Silverado, Sierra, or Tahoe), ensuring a perfect fit without the need for modifications. This eliminates guesswork in installation.

4. **High Performance and Efficiency** GM injectors are engineered for precise fuel delivery, which improves engine efficiency, power output, and emissions compliance. Replacing a failing injector with an OEM unit can restore optimal performance.

5. **Resale Value and Trust** If you plan to sell the vehicle later, having OEM parts installed can make the vehicle more appealing to buyers who prefer or require genuine GM components.

6. **Easier Troubleshooting** Since it s an original part, diagnostic tools and repair manuals will reference it accurately, simplifying maintenance and repair processes.

7. **Compatibility with Aftermarket Tuning** Many aftermarket tuners and performance upgrades are calibrated with OEM injectors in mind. Using a genuine GM injector ensures compatibility with tuning software and performance modifications.

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1. **Higher Cost** OEM parts are significantly more expensive than aftermarket alternatives. The 55512675 FS injector will cost more upfront compared to third-party injectors, which may offer similar performance at a lower price.

2. **Limited Availability** Depending on the region, finding an authorized dealer or supplier for this specific part may be challenging. Some parts require ordering through GM s official channels, which can add time to the replacement process.

3. **Potential for Overkill** If the injector failure is minor (e.g., a clogged nozzle rather than a complete failure), replacing it with a new OEM unit may be unnecessary. In such cases, cleaning or repairing the existing injector could be a more cost-effective solution.

4. **Longer Wait Times** Since OEM parts are manufactured to order, there may be delays in receiving the injector, especially if it s a high-demand part. Aftermarket options are often available immediately.

5. **No Customization Options** Unlike aftermarket injectors, OEM units do not offer upgrades such as higher flow rates or enhanced durability for extreme performance applications. If you re modifying the engine for high horsepower, an aftermarket injector may be more suitable.

6. **Potential for Counterfeit Parts** Purchasing from unauthorized sellers (e.g., eBay, Craigslist, or unscrupulous online marketplaces) increases the risk of receiving a counterfeit or refurbished part that doesn t meet GM s standards. Always buy from reputable sources.

7. **Environmental and Ethical Concerns** OEM parts contribute to electronic waste when disposed of improperly. While this is a minor consideration, it s worth noting for environmentally conscious buyers.

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### **Conclusion**

The GM 55512675 FS injector is an excellent choice if you prioritize **reliability, warranty coverage, and direct fitment** for your GM vehicle. It is the safest and most compatible option for restoring factory performance, especially if the vehicle is still under warranty or you plan to keep it long-term. However, the **higher cost and potential overkill** for minor issues make it less ideal for budget-conscious buyers or those seeking performance upgrades beyond stock specifications.

If your primary concern is **cost savings** or **high-performance tuning**, an aftermarket injector (e.g., from Delphi, Stanadyne, or a reputable brand like **Denso or Siemens**) may be a viable alternative, provided it meets or exceeds GM s specifications. Always ensure the aftermarket part is compatible with your engine s requirements and has a good reputation for durability.

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### **Recommendation**

- You need a **direct replacement** for OEM reliability.

- Your vehicle is still under warranty, and you want to avoid voiding it with aftermarket parts.

- You prioritize **long-term durability** and **ease of maintenance**.

- You re replacing a **completely failed injector** (not just a minor issue).

- You re on a **tight budget** and can find a high-quality aftermarket injector (e.g., **Delphi 55512675 equivalent** or **Stanadyne 120-0003**).

- You re **modifying the engine** for increased power and need an injector with higher flow capacity.

- The injector failure is **minor** (e.g., clogged nozzle), and cleaning/repairing the existing unit is feasible.

- **Authorized GM Dealers** (for warranty coverage).

- **GM Parts Direct** (official GM parts website).

- **Reputable Online Retailers** (e.g., **RockAuto, 1A Auto, or local GM parts distributors**) Verify seller authenticity to avoid counterfeits.

- **eBay or Facebook Marketplace** (only if purchasing from a trusted seller with return options).

Always **check the part number for compatibility** with your exact vehicle and engine configuration before purchasing. If unsure, consult a mechanic or GM service center to confirm the correct part.

Details:

Found a Better Price. Just Didn't Like it. Changed My Mind.

part #: 55512675 price

• $313.95

specifications carfuelinjector:

• for models: Fs
• brand: Gm
• mpn: 55512675
• part type: Injector
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• parts included: Only Part Reference 0 On The Diagram Is Included

shipping carfuelinjector:

• service: FedEx Ground / FedEx Home Delivery
• type: Fixed
• class: Standard
• cost: $0.00
• transit: 4-10 Days
• carrier: FedEx

general carfuelinjector:

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

offer carfuelinjector:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: April 13, 2026

seller carfuelinjector:

• # reviews: 30919
• city: Garland, Texas
• rating: 99.0%

returns carfuelinjector:

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

payments carfuelinjector:

• wallet: Paypal
• credit card: Mastercard
• other

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