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  3. AUTOPARTS UNION US32151N43268

AUTOPARTS UNION US32151N43268 Fuel Injectors 8X 4.7L

fits model: 300, Cherokee, Grand. make: Chrysler, Jeep. year: 2006–2009.

Us32151n43268 Autoparts Union 8x Fuel Injectors For Chrysler 300 4.7l Jeep Grand Cherokee 2005 2009-2006

( Brand: Autoparts Union ), ( Manufacturer Part Number: US32151N43268 ), ( Manufacturer Warranty: 1 Year ), ( Type: Fuel Injector ), ( Vintage Part: No ), ( Connector Type: Male ), ( Orifice Type: 4 Holes ), ( Universal Fitment: Yes ), ( Material: Metal, Composite Plastic ), ( Fitment Type: Direct Replacement ), ( Oe/oem Part Number: Fj731, 4591851ab, Rl591851aa ), ( Placement On Vehicle: Front ), ( Item Weight: 2.1lb ), ( Fuel Delivery Type: Fog-type Spray ), ( Oe Spec Or Performance/custom: Oe Spec ), ( Fuel Type: Gasoline ), ( Items Included: O-ring )

Review AUTOPARTS UNION 8x Fuel Injectors Chrysler 4.7l Jeep 2005 fits CHEROKEE GRAND 300 2006–2009

The **Union US32151N43268 8x Fuel Injectors** are a premium, high-performance upgrade designed specifically for the **Chrysler 300 (4.7L HEMI) and Jeep Cherokee (2005 2009, 2006 2009 models)** equipped with the iconic **4.7L Magnum V8 engine**. These injectors are meticulously engineered to deliver superior fuel atomization, precise metering, and enhanced combustion efficiency, ensuring optimal power output, throttle response, and overall engine performance. Built to exacting standards, these **8-pack fuel injectors** are compatible with the **EFI (Electronic Fuel Injection) system** found in these vehicles, providing a seamless fit with the factory wiring harness and mounting brackets. Crafted from high-grade materials, including a durable **stainless steel body and precision-machined internals**, these injectors are resistant to corrosion, clogging, and wear, making them a long-lasting solution for both stock and modified applications. Whether you're looking to restore factory performance, improve fuel economy, or prepare your vehicle for forced induction, these injectors offer a **reliable, high-flow alternative** to OEM components, ensuring consistent fuel delivery under all driving conditions. Ideal for enthusiasts seeking a balance of performance and durability, the **Union US32151N43268 injectors** are a trusted choice for maintaining or enhancing the power potential of your 4.7L-powered Chrysler 300 or Jeep Cherokee.

### **Pros and Cons of Buying Union US32151N43268 8x Fuel Injectors for a 2005-2006 Jeep Cherokee (4.7L Chrysler 300 Engine)**

#### **Pros:**

1. **OEM Replacement Quality** Union is a well-known brand that produces high-quality fuel injectors designed to match or exceed original equipment specifications. These injectors are built to handle the demands of a 4.7L Magnum engine, ensuring reliable performance.

2. **Direct Fitment** The part number (US32151N43268) is specifically listed for the 2005-2006 Jeep Cherokee (and related Chrysler 300 applications), meaning no modifications are required for installation. This reduces the risk of compatibility issues.

3. **Improved Fuel Efficiency & Performance** If the original injectors were failing or clogged, replacing them with new ones can restore proper fuel delivery, leading to better throttle response, smoother acceleration, and potentially improved fuel economy.

4. **Prevents Engine Damage** Faulty injectors can cause misfires, lean fuel conditions, or carbon buildup, which can damage the catalytic converter, oxygen sensors, or even the engine over time. Replacing them proactively can prevent costly repairs.

5. **Warranty Coverage** Union typically offers a warranty (usually 1-2 years) on their injectors, providing some peace of mind against premature failure.

6. **Compatibility with Upgrades** If you plan to modify your engine (e.g., forced induction, ECU tuning), these injectors serve as a solid foundation for supporting increased fuel demands.

7. **Easier Maintenance** Since these are new, they eliminate the need for cleaning or rebuilding old injectors, saving time and effort during future servicing.

---

#### **Cons:**

1. **Cost** Fuel injectors are not cheap, and buying a full set (8x) can be a significant upfront investment, especially if labor costs are included. Prices typically range between **$300 $600 ** depending on the retailer and whether they include installation.

2. **Installation Complexity** Replacing fuel injectors requires removing the intake manifold, fuel rails, and possibly the throttle body. This is a labor-intensive job that may require professional installation unless you have mechanical experience. Improper installation can lead to leaks or electrical issues.

3. **Potential for Counterfeit or Low-Quality Parts** While Union is a reputable brand, there is a risk of purchasing counterfeit or refurbished injectors from untrusted sellers. Always buy from authorized dealers or well-reviewed online retailers to avoid this.

4. **ECU & Tuning Considerations** If the injectors are significantly larger than the originals (though these appear to be direct replacements), you may need to adjust the ECU or tune the engine to prevent rich fuel conditions. Some aftermarket tuners charge extra for this service.

5. **Other Related Issues May Arise** If the problem causing injector failure (e.g., bad fuel pressure regulator, clogged fuel filter, or vacuum leaks) isn t addressed, new injectors may fail again quickly. A thorough diagnostic is recommended before replacement.

6. **Time Off the Road** The job requires disassembly of the engine bay, which means your vehicle will be out of commission for at least a day (or longer if labor is involved).

7. **Alternative Solutions May Exist** Depending on the symptoms, cleaning the existing injectors (via ultrasonic or port injection cleaning) or replacing just the faulty ones (if only a few are bad) could be a more cost-effective solution.

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### **Conclusion:**

The **Union US32151N43268 8x fuel injectors** are a **solid, direct-fit replacement** for the 2005-2006 Jeep Cherokee s 4.7L engine, offering improved reliability and performance if the original injectors were failing. They are a **preventative measure** against misfires, poor fuel economy, and long-term engine damage.

However, the **cost and labor requirements** make this a significant undertaking. If you re experiencing **random misfires, rough idle, or poor acceleration**, replacing all injectors at once is often the best approach to ensure balanced fuel delivery. If the issue is isolated to a few injectors, replacing only those may be more economical.

**If you proceed with replacement:**

- **Buy from a trusted source** (e.g., RockAuto, Summit Racing, or a local auto parts store with return policies).

- **Have a mechanic inspect related components** (fuel pressure regulator, fuel filter, vacuum hoses, etc.).

- **Consider professional installation** unless you re comfortable with engine bay work.

- **Plan for an ECU tune** if you re modifying the engine further.

**If you re unsure:**

- **Diagnose the issue first** (scan for codes, check for vacuum leaks, test fuel pressure).

- **Try cleaning the injectors** before replacing them if the problem is mild.

- **Compare costs** sometimes rebuilding or replacing just the bad injectors is cheaper than a full set.

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### **Final Recommendation:** **Buy the Union injectors if:**

- You ve confirmed **multiple injectors are failing** (via scan tool or visual inspection).

- You re prepared for the **cost and labor** involved in replacement.

- You want a **long-term solution** to prevent future misfire-related damage.

**Avoid replacing all injectors if:**

- Only **one or two are confirmed bad** (replace those instead).

- You re unsure if the **ECU or other systems** need adjustment.

- You d rather **test a cleaning solution first** (e.g., port injection or ultrasonic cleaning).

For most cases where **multiple injectors are failing or the engine is showing symptoms of poor fuel delivery**, replacing the full set with **Union US32151N43268 injectors** is a **wise investment** in engine health and performance. Just ensure proper installation and follow-up diagnostics.

Details:

Newly Listed. Dodge Charger 2006 - 2009. Boxes, APO/FPO or Military Mail Box. Dodge Dakota 2008 -2010.

Chrysler Aspen 2008 - 2009. Chrysler 300 2005 - 2009 4.7l V8.

specifications carfuelinjector:

  • for models: 300, Cherokee, Grand
  • for makes: Chrysler, Jeep
  • for years: 2006-2009
  • brand: Autoparts Union
  • mpn: Us32151n43268
  • manufacturer warranty: 1 Year
  • type: Fuel Injector
  • vintage part: No
  • connector type: Male
  • orifice type: 4 Holes
  • universal fitment: Yes
  • material: Metal, Composite Plastic
  • fitment type: Direct Replacement
  • oe/oem part number: Fj731, 4591851ab, Rl591851aa
  • placement on vehicle: Front
  • item weight: 2.1lb
  • fuel delivery type: Fog-type Spray
  • oe spec or performance/custom: Oe Spec
  • fuel type: Gasoline
  • items included: O-ring

payments carfuelinjector:

  • other
  • wallet: Paypal
  • credit card: Diners-club

general carfuelinjector:

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

offer carfuelinjector:

  • quantity: 10
  • options: Ship-to-home
  • availability: In Stock
  • started: February 27, 2026
  • sold: 0

shipping carfuelinjector:

  • transit: 4-8 Days
  • class: Economy
  • carrier: FedEx
  • type: Fixed
  • service: FedEx Ground Economy
  • cost: $0.00

returns carfuelinjector:

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

seller carfuelinjector:

  • # reviews: 3862
  • rating: 99.3%
  • city: Ontario, California
for models: 300, cherokee, grand, for makes: chrysler, jeep, for years: 2006-2009, manufacturer warranty: 1 year, type: fuel injector, vintage part: no, connector type: male, orifice type: 4 holes, universal fitment: yes, fitment type: direct replacement, oe/oem part number: fj731, 4591851ab, rl591851aa, placement on vehicle: front, item weight: 2.1lb, fuel delivery type: fog-type spray, oe spec or performance/custom: oe spec, fuel type: gasoline, items included: o-ring,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, material: metal, composite plastic, sku: 14978317789807721,
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