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  3. MOTORCRAFT CM-4891

MOTORCRAFT CM-4891 Fuel Injector

fits model: Ranger. year: 1998–2001.

Cm-4891 Motorcraft Genuine Fuel Injector

( Brand: Motorcraft ), ( Manufacturer Part Number: CM-4891 ), ( Part Type: Fuel Injector ), ( Make: Ford ), ( Year: 1998 1999 2000 2001 )

Review MOTORCRAFT Genuine Fuel Injector fits RANGER 1998–2001

The **Motorcraft CM-4891 Fuel Injector** is a high-performance, precision-engineered component designed exclusively for Ford vehicles, delivering optimal fuel delivery and combustion efficiency for enhanced engine performance and reliability. Part of Ford s trusted Motorcraft brand, this fuel injector is meticulously crafted to meet or exceed OEM specifications, ensuring seamless integration with modern fuel-injection systems. Built with a robust **stainless steel body and advanced ceramic nozzle**, the CM-4891 is engineered to resist corrosion, withstand high-pressure fuel delivery (up to **1,000 psi**), and maintain consistent spray patterns for precise fuel atomization. Its **electromagnetic solenoid** operates with exceptional responsiveness, providing rapid on/off cycling to optimize fuel metering, whether under light load or high-demand conditions. The injector s **sealed O-ring and precision-machined components** ensure a leak-free connection to the fuel rail, minimizing the risk of fuel leaks or contamination, while its **self-cleaning design** helps prevent carbon buildup, prolonging both the injector s lifespan and the overall health of the engine. Ideal for applications in **Ford s EcoBoost, Duratec, and Power Stroke diesel engines**, the CM-4891 is a direct-replacement part that restores factory performance, reduces emissions, and improves fuel economy making it a critical component for both maintenance and performance upgrades. Whether used in a daily driver or a high-performance application, this injector exemplifies Ford s commitment to durability, efficiency, and engineering excellence.

**Pros and Cons of buying a Motorcraft CM-4891 Fuel Injector**

The Motorcraft CM-4891 is a high-pressure fuel injector designed for Ford engines, particularly those using direct injection systems like the EcoBoost lineup. Below is a detailed breakdown of its advantages and disadvantages.

### **Pros**

1. **OEM Quality and Reliability**

The Motorcraft brand is Ford s official equipment manufacturer, meaning the CM-4891 is engineered to meet or exceed the performance and durability standards of the original components. This reduces the risk of compatibility issues or premature failure compared to aftermarket injectors of unknown quality.

2. **Direct Injection Compatibility**

The CM-4891 is specifically designed for Ford s high-pressure direct injection systems, such as those found in the 2.0L and 3.5L EcoBoost engines. It delivers precise fuel atomization and pressure regulation, which is critical for optimal engine performance, fuel efficiency, and emissions compliance.

3. **Durability and Longevity**

Motorcraft injectors are built to withstand the harsh conditions of direct injection, including high-pressure fuel delivery and thermal cycling. While no injector is indestructible, the CM-4891 is less likely to clog or fail prematurely compared to cheaper alternatives, especially if properly maintained.

4. **Warranty Coverage**

Motorcraft products typically come with a warranty (often 12 24 months), providing some recourse if the injector fails due to a manufacturing defect. This can be a significant advantage over no-name brands that offer little to no warranty.

5. **Ease of Installation**

As an OEM part, the CM-4891 is designed to fit seamlessly into Ford s fuel injection systems. Installation generally requires minimal modification, and it often comes with gaskets or seals included, reducing the risk of leaks during assembly.

6. **Performance Consistency**

Since it is an original equipment part, the CM-4891 maintains consistent performance characteristics with the rest of the engine s components. This can help avoid issues like uneven fuel distribution or power loss that might arise from mismatched aftermarket injectors.

7. **Support and Availability**

Motorcraft parts are widely available through Ford dealerships, authorized service centers, and reputable online retailers. This makes sourcing replacements easier, especially for older or less common Ford models.

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### **Cons**

1. **Higher Cost Compared to Aftermarket Options**

The CM-4891 is more expensive than many aftermarket fuel injectors, which may appeal to budget-conscious buyers. While the price reflects OEM quality, it can be a significant investment, especially when replacing multiple injectors or addressing related issues like fuel rail or ECU upgrades.

2. **Limited Customization**

Unlike some aftermarket injectors, the CM-4891 does not offer adjustable flow rates or performance tuning options. If you are modifying your engine for increased power, you may need to pair it with a higher-flow aftermarket injector or a remapped ECU to fully realize performance gains.

3. **Potential for Overkill on Stock Engines**

For stock or lightly modified engines, the CM-4891 may provide more performance than necessary, leading to slightly higher fuel consumption or unnecessary complexity. In such cases, a slightly lower-flow aftermarket injector could suffice at a lower cost.

4. **Dependence on Ford s Support Network**

If you encounter issues, troubleshooting or repairs may require a Ford dealership or a technician familiar with Motorcraft components. Independent mechanics may charge higher labor rates for OEM parts, depending on their policies.

5. **Risk of Counterfeit Parts**

While less common with reputable sellers, there is a risk of purchasing counterfeit Motorcraft injectors, especially from third-party online marketplaces. Always buy from authorized dealers or trusted retailers to avoid this issue.

6. **Maintenance Requirements**

Like all fuel injectors, the CM-4891 requires regular cleaning and maintenance to prevent carbon buildup, clogging, or internal wear. Neglecting maintenance can lead to reduced performance or failure, negating the benefits of the OEM part.

---

### **Conclusion**

The Motorcraft CM-4891 fuel injector is a reliable, high-quality choice for Ford owners, particularly those running direct injection engines like the EcoBoost lineup. Its OEM status ensures compatibility, durability, and peace of mind, though at a premium price. It is ideal for:

- **Stock or mildly modified engines** where OEM reliability is prioritized.

- **Owners who prefer Ford s support network** and want to avoid potential compatibility issues with aftermarket parts.

- **Long-term investments** where warranty coverage and longevity are important.

However, if budget is a concern or if you are pursuing significant engine modifications, aftermarket injectors may offer better value or performance tuning options. Always weigh the trade-offs between cost, performance needs, and maintenance requirements before deciding.

### **Recommendation**

If you are replacing a failed injector in a Ford direct injection engine and want the most reliable, long-term solution, the **Motorcraft CM-4891 is an excellent choice**. Purchase it from an authorized Ford dealer or a reputable online retailer to avoid counterfeit parts, and ensure your fuel system (including fuel lines, filters, and ECU) is in good condition to maximize its lifespan.

For performance-focused builds or budget-conscious buyers, consider consulting with a Ford tuner or performance specialist to determine whether an aftermarket injector (e.g., from Delphi, Stanadyne, or other high-quality brands) could better suit your needs without sacrificing reliability. Always prioritize proper installation and maintenance to extend the injector s life.

Details:

Not only do they help keep harmful particles out of your vehicle system, but Motorcraft filters are also the recommended for Fo. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. Parts must be resalable and in the original packaging. Electrical parts are not returnable.

part #: cm4891 prices

  • $50.00-$85.57

specifications carfuelinjector:

  • for models: Ranger
  • for years: 1998-2001
  • brand: Motorcraft
  • mpn: Cm-4891
  • part type: Fuel Injector
  • make: Ford
  • year: 1998 1999 2000 2001

payments carfuelinjector:

  • other
  • wallet: Paypal
  • credit card: Discover

returns carfuelinjector:

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

shipping carfuelinjector:

  • cost: $12.50
  • transit: 5-11 Days
  • service: Standard
  • class: Standard
  • type: Fixed

general carfuelinjector:

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

offer carfuelinjector:

  • started: January 31, 2026
  • sold: 0
  • quantity: 2
  • options: Ship-to-home
  • availability: In Stock

seller carfuelinjector:

  • # reviews: 747
  • rating: 99.5%
  • city: Dallas, Texas
for models: ranger, for years: 1998-2001, part type: fuel injector, year: 1998 1999 2000 2001,
manufacturer: ford, category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, sku: 14445797782116632,
Motorcraft CM-4891 Is Similar To:
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5 offers $50.00–$85.57 USD
  • New. Offer #1 priced at $65.73 + $11.99 shipping estimate = $77.72* total. Genuine Motorcraft Parts.+$11.99 shipping
  • New. Offer #2 priced at $50.00 + $6.07 shipping estimate = $56.07* total. +$6.07 shipping
  • New. Offer #3 priced at $85.57 + $0.00 shipping estimate = $85.57* total. Pictures do not represent quantity of item you are buying. Part #: CM4891.FREE SHIPPING
  • New. Offer #4 priced at $91.02 + $0.00 shipping estimate = $91.02* total. Notes: F87E-D2A. Motorcraft Fuel Injector --.FREE SHIPPING
  • New. Offer #5 priced at $61.61 + $5.99 shipping estimate = $67.60* total. +$5.99 shipping

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