NISSAN 14001-7J500 Upper Air Intake Manifold 329-59499

( Brand: Nissan ), ( Part Type: Intake Manifold ), ( Make: Infiniti ), ( Item Name: Upper Intake Manifold ), ( Donor Car : 160128 ), ( Genuine Oem: Yes ), ( Fitment Type: Direct Replacement ), ( Oem Part Number: 14001-7j500 ), ( Ipn: 329-59499 ), ( Paint: Black )

Review NISSAN Infiniti Upper Air Intake Manifold Oem fits G20 2000–2002

The Nissan 14001-7J500 upper air intake manifold is a crucial component of the air intake system in Infiniti G20 vehicles produced between 2000 and 2002. This part is responsible for supplying the engine with the necessary amount of clean air for combustion during the vehicle's operation.

This upper air intake manifold is meticulously engineered to provide optimal engine performance. It is constructed primarily of aluminum, which not only keeps the weight low but also enhances the heat dissipation efficiency. With its smooth, polished surface, it ensures a steady and uninterrupted airflow into the engine.

The manifold boasts an intricate design featuring an integrated throttle body and separate runners for each cylinder. This design allows for a more uniform air distribution to the engine, which in turn leads to improved engine efficiency and enhanced power output.

The OEM (Original Equipment Manufacturer) part maintains an exact fit to the engine and the other components of the air intake system. This ensures a secure installation and a leak-free connection, which is essential for maintaining the vehicle's performance and fuel efficiency.

The Nissan 14001-7J500 upper air intake manifold comes with all the necessary hardware, including gaskets and bolts, for a hassle-free installation process. It is a direct replacement part, meaning that no modifications are required for installation.

In summary, the Nissan 14001-7J500 upper air intake manifold is an essential component of the Infiniti G20's air intake system. Its aluminum construction, intricate design, and precise fit make it an ideal choice for maintaining the vehicle's performance and ensuring its longevity.

Buying a Nissan 14001-7J500 upper air intake manifold for a 2000-2002 Infiniti G20 comes with both advantages and disadvantages. Let's examine each to help you make an informed decision.

1. Improved Airflow: Replacing the stock manifold with an aftermarket one can result in better airflow, leading to improved engine performance and power output.

2. Enhanced Throttle Response: A high-flow manifold can provide quicker throttle response, making the vehicle feel more responsive.

3. Better Gas Mileage: In some cases, an aftermarket intake manifold can improve fuel efficiency by optimizing airflow and reducing engine work.

4. Customization: Installing a performance intake manifold is a popular modification for those seeking to enhance their Infiniti G20's power and driving experience.

1. Cost: Aftermarket intake manifolds can be expensive, especially high-performance ones. The cost of the manifold itself, as well as related installation expenses, should be considered.

2. Installation Complexity: Installing an aftermarket intake manifold can be a challenging process, requiring specialized tools and expertise. This may result in additional labor costs.

3. Potential Issues: Although rare, installation of an aftermarket intake manifold can lead to issues such as engine misfires or check engine lights. These problems may require additional diagnostic work and repair costs.

4. Voiding Warranty: Installing an aftermarket intake manifold can void your vehicle's factory warranty, potentially leading to additional expenses if any factory-related issues arise.

Investing in a high-performance aftermarket upper air intake manifold for a 2000-2002 Infiniti G20 can result in improved engine performance, enhanced throttle response, and better gas mileage. However, these benefits come with a cost and potential challenges, including installation complexity, potential issues, and the possibility of voiding the factory warranty.

If you are willing to accept these risks and invest in the modification, then an aftermarket intake manifold could be a worthwhile investment for your Infiniti G20. However, if you are looking for a more cost-effective solution or prefer a lower-risk modification, you may want to consider other options.

Before making a decision, consider your budget, technical expertise, and desired outcome. Research various aftermarket intake manifold options carefully and consult with a professional mechanic or tuner to assess the potential benefits and challenges for your specific vehicle. If you decide to proceed, ensure that all installation work is carried out by a qualified professional to minimize potential issues.

Details:

part #: 140017j500 prices

• $102.74-$112.48

specifications inputmanifolds:

• for makes: Infiniti, Nissan
• for years: 2000-2002
• brand: Nissan
• part type: Intake Manifold
• make: Infiniti
• item name: Upper Intake Manifold
• donor car : 160128
• genuine oem: Yes
• fitment type: Direct Replacement
• oem part number: 14001-7j500
• interchange part number: 329-59499
• paint: Black

returns inputmanifolds:

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

offer inputmanifolds:

• availability: In Stock
• options: Ship-to-home
• quantity: 1
• started: December 5, 2025
• sold: 0

seller inputmanifolds:

• city: Independence, Oregon
• rating: 99.6%
• # reviews: 2222

shipping inputmanifolds:

• carrier: FedEx, USPS
• cost: $0.00
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery, USPS Ground Advantage
• transit: 5-8 Days
• class: Standard

payments inputmanifolds:

• wallet: Apple-pay
• credit card: Discover
• other

general inputmanifolds:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds

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