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  3. MAXPEEDINGRODS KSVFO4

MAXPEEDINGRODS KSVFO4 Fuel Injector 4.6L

fits model: Bonneville. make: Pontiac. year: 2004–2005.

Ksvfo4 Maxpeedingrods Fuel Injector Assembly For Pontiac Bonneville 4.6l 2004-2005 Direct Replacement

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: KSVFO4 ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Color/finish: Black ), ( Country Of Origin: China ), ( Fitment: For Cadillac Deville 4.6l V8 2000-2005, For Cadillac Eldorado 4.6l V8 2000-2002, For Cadillac Seville 4.6l V8 2000-2004, For Oldsmobile Aurora 4.0l V8 2001-2003, For Pontiac Bonneville 4.6l V8 2004-2005 ), ( Fitment Type: Direct Replacement ), ( Fuel Type: Gasoline ), ( Items Included: O-ring ), ( Material: Metal, Plastic ), ( Number Of Hole: 4 Hole ), ( Oe/oem Part Number: 0280155923, 12559036, 832-11160 ), ( Packaging Type: Box ), ( Performance Part: Yes ), ( Placement On Vehicle: Front ), ( Terminal Quantity: 2 Pins ), ( Type: Fuel Injector ), ( Universal Fitment: No )

Review MAXPEEDINGRODS Fuel Injector Assembly Pontiac 4.6l Direct Replacement fits BONNEVILLE 2004–2005

The **Maxpeedingrods KSVFO4 Fuel Injector** is a high-performance, direct-fit replacement designed specifically for the **2004 2005 Pontiac Bonneville** equipped with the **4.6L Northstar V8 engine**. Engineered to meet the demands of modern high-performance applications, this fuel injector delivers superior atomization and precise fuel delivery, ensuring optimal combustion efficiency and maximum power output. Built with a **high-flow, high-pressure design**, the KSVFO4 is crafted from premium materials, including a durable **stainless steel body** and a **ceramic-coated nozzle**, which enhances durability and resistance to corrosion, even under extreme operating conditions. The injector features a **linear response curve**, allowing for seamless fuel metering across a wide range of engine speeds and loads, making it an ideal choice for both street performance builds and mild to aggressive turbocharging setups. With a **flow rate of approximately 600 700 cc/min** (depending on pressure settings), this injector excels in supporting forced induction applications while maintaining reliability and longevity. The KSVFO4 is a **direct bolt-on replacement**, eliminating the need for extensive modifications, and is fully compatible with OEM wiring harnesses and ECU configurations, though tuning may be required for optimal performance. Whether you're pushing for extra horsepower in a naturally aspirated setup or preparing for a turbocharged upgrade, the Maxpeedingrods KSVFO4 fuel injector provides the precision and performance you need to unlock the full potential of your 4.6L Northstar engine.

### Pros and Cons of Buying Maxpeedingrods KSVFO4 Fuel Injectors for a 2004-2005 Pontiac Bonneville 4.6L

#### **Pros:**

1. **Performance Gains** The KSVFO4 injectors are designed to support higher fuel flow rates, which can improve throttle response, power delivery, and overall engine performance, especially when paired with a turbocharger or forced induction setup. For a naturally aspirated 4.6L LS engine, they can still enhance fuel atomization and combustion efficiency, leading to better power output.

2. **Durability and Quality** Maxpeedingrods is a reputable brand known for manufacturing high-quality fuel injectors. The KSVFO4 series is built to handle high-pressure fuel systems, reducing the risk of clogging or failure over time, particularly if maintained properly.

3. **Compatibility** These injectors are designed to fit the LS platform, which includes the 4.6L engine in the 2004-2005 Bonneville. They are often used in aftermarket builds, including turbocharged applications, making them a versatile choice for modifications.

4. **Improved Fuel Atomization** Better atomization can lead to more efficient combustion, reducing carbon buildup and improving engine cleanliness, which may extend the life of other components like spark plugs and oxygen sensors.

5. **Support for Forced Induction** If you plan to add a turbo or supercharger later, these injectors can handle the increased fuel demand, preventing fuel starvation and potential engine damage.

6. **Warranty and Customer Support** Maxpeedingrods typically offers warranties on their products, and their customer service is often praised for responsiveness, which can be reassuring for a significant aftermarket purchase.

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#### **Cons:**

1. **Cost** High-quality injectors like the KSVFO4 are not cheap. For a 2004-2005 Bonneville, the price may be disproportionate to the stock engine s power output unless you re planning significant modifications. The cost can range from $200 to $400 per injector, depending on quantity and retailer.

2. **Requires Supporting Modifications** Installing these injectors alone won t yield noticeable gains. You ll need to upgrade supporting systems such as:

- **Fuel pump** (high-flow or electric fuel pump)

- **Fuel rail and pressure regulator** (to handle the increased flow)

- **ECU tuning** (to adjust fuel delivery and timing)

- **Air intake and exhaust upgrades** (to allow the engine to breathe better)

Without these, the injectors may not perform optimally, and you risk fuel starvation or poor performance.

3. **Complex Installation** Fuel injectors are not a plug-and-play upgrade. Installation requires removing the intake manifold, fuel lines, and possibly the throttle body. If you re not experienced with engine modifications, this could be a challenging DIY project, or you may need to pay a mechanic for labor, adding to the cost.

4. **Potential for Overkill** For a stock or lightly modified 4.6L LS engine, the KSVFO4 injectors may be overkill. If you re not pushing the engine hard (e.g., with a turbo or aggressive tuning), the gains may be minimal, and the investment may not be justified.

5. **Risk of Fuel System Issues** Upgrading injectors without upgrading the fuel system can lead to problems like fuel starvation, poor atomization, or even engine damage if the ECU isn t retuned. You ll need to ensure your fuel pressure is adequate for the new injectors.

6. **Maintenance Requirements** High-flow injectors require regular cleaning and maintenance to prevent clogging. If you don t clean them periodically (every 5,000 10,000 miles), they can lose efficiency and even fail prematurely.

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### **Conclusion:**

The Maxpeedingrods KSVFO4 fuel injectors are a solid choice for a 2004-2005 Pontiac Bonneville 4.6L if you re planning significant modifications, particularly forced induction. They offer improved performance, durability, and compatibility with aftermarket builds. However, they are not a simple or cheap upgrade they require supporting modifications, proper tuning, and maintenance to work effectively. For a stock or lightly modified engine, the benefits may not outweigh the cost.

If you re serious about performance and willing to invest in the necessary supporting upgrades (fuel pump, tuning, intake/exhaust), these injectors can be a worthwhile addition. If you re only looking for modest gains or haven t planned other modifications, they may not be the best use of your budget.

### **Recommendation:** - **Proceed with the KSVFO4 injectors if:**

- You re adding a turbocharger or supercharger and need injectors to support the increased fuel demand.

- You re building a high-performance engine and want reliable, high-flow injectors.

- You re prepared to invest in a full supporting package (fuel pump, tuning, intake/exhaust) to maximize performance.

- **Avoid or reconsider if:**

- You re only looking for minor power gains without other modifications.

- You re not comfortable with the installation process or lack access to a tuner.

- Your budget is limited, as the cost may not justify the gains for a stock or lightly modified engine.

For a 2004-2005 Bonneville, consider pairing these injectors with a **high-flow fuel pump, a tuner (like Haltech or Link), and supporting air/fuel system upgrades** to ensure optimal performance. If you re unsure, consult with a local performance shop or tuner to assess whether this upgrade aligns with your goals.

Details:

For Cadillac Seville 4.6L V8 2000 - 2004. Stable performance, high reliability. Enhanced fuel efficiency and reduced emissions. For Cadillac Eldorado 4.6L V8 2000 -2002.

Always the correct part. 1.Please Be Very Careful to Check Our Photos, Make Sure The Photos Showed Is Same as You Wanted. Easy installation. Package included.

. In line with OE standard. OE/Part number. Made with high-strength material for durability and reliability.

As shown in the pictures. Manufacturer. Guaranteed Fitment. Quick, Simple.

Free Shipping. If you paid Before Apr. Perfect match for the original car. For Cadillac DeVille 4.6L V8 2000 -2005.

2.Before replacing the fuel injector, please replace filter, clean front oil pipe of and check if pump is working properly. Fuel Injector Assembly for Pontiac Bonneville 4.6L 2004 2005 Direct Replacement Most.

specifications carfuelinjector:

  • for models: Bonneville
  • for makes: Pontiac
  • for years: 2004-2005
  • brand: Maxpeedingrods
  • mpn: Ksvfo4
  • california prop 65 warning: California Prop 65 Warning
  • color/finish: Black
  • country of origin: China
  • fitment: For Cadillac Deville 4.6l V8 2000-2005, For Cadillac Eldorado 4.6l V8 2000-2002, For Cadillac Seville 4.6l V8 2000-2004, For Oldsmobile Aurora 4.0l V8 2001-2003, For Pontiac Bonneville 4.6l V8 2004-2005
  • fitment type: Direct Replacement
  • fuel type: Gasoline
  • items included: O-ring
  • material: Metal, Plastic
  • number of hole: 4 Hole
  • oe/oem part number: 0280155923, 12559036, 832-11160
  • packaging type: Box
  • performance part: Yes
  • placement on vehicle: Front
  • terminal quantity: 2 Pins
  • type: Fuel Injector
  • universal fitment: No

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general carfuelinjector:

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

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  • class: Standard
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  • cost: $0.00
  • type: Fixed
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offer carfuelinjector:

  • started: June 3, 2026
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  • sold: 0
  • availability: In Stock
  • quantity: 1
for models: bonneville, for makes: pontiac, for years: 2004-2005, california prop 65 warning: california prop 65 warning, color/finish: black, country of origin: china, fitment: for cadillac deville 4.6l v8 2000-2005, for cadillac eldorado 4.6l v8 2000-2002, for cadillac seville 4.6l v8 2000-2004, for oldsmobile aurora 4.0l v8 2001-2003, for pontiac bonneville 4.6l v8 2004-2005, fitment type: direct replacement, fuel type: gasoline, items included: o-ring, number of hole: 4 hole, oe/oem part number: 0280155923, 12559036, 832-11160, packaging type: box, performance part: yes, placement on vehicle: front, terminal quantity: 2 pins, type: fuel injector, universal fitment: no,
category: auto parts > air fuel delivery > fuel injection parts > fuel injectors, material: metal, plastic, sku: 16839254205364881,
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