NISSAN 14003-08U00 Lower Upper Skyline Intake Manifold Bov R33 75T

( Mounting Style: Bolt-on ), ( Color: Silver ), ( Manufacturer Part Number: 14003 08U00 ), ( Cylinder Head Type: In-line Cross-flow ), ( Material: Cast Iron ), ( Item Length: 15.7 ), ( Vintage Part: Yes ), ( Placement On Vehicle: Left, Lower, Upper ), ( Fuel Type: Gasoline ), ( California Prop 65 Warning: Oem Part, Non Modded, Should Be Allowed ), ( Type: Intake Manifold ), ( Engine Size: 151 In ), ( Item Height: 31.5 ), ( Features: Bare, Unfinished, Oem ), ( Universal Fitment: No ), ( Item Width: 17.7 ), ( Country Of Origin: Japan )

Review NISSAN Skyline R33 Oem Upper And Lower Intake Manifold 75t Bov fits RB25DET 1993–1998

Nissan 14003 08U00 RB25DET Upper and Lower Intake Manifold for 1993-1998 Skyline R33

The Nissan 14003 08U00 is an original equipment manufacturer (OEM) upper and lower intake manifold specifically designed for the RB25DET engine found in the 1993-1998 Nissan Skyline R33. This intake manifold setup is known for its high-performance capabilities, making it a popular choice among tuning enthusiasts.

The upper intake manifold (UIM) is responsible for distributing fuel and coolant to the cylinder heads, as well as routing the intake ports for the throttle bodies and mass airflow sensor. The OEM 14003 08U00 UIM is made from high-quality aluminum, ensuring it is both lightweight and durable. Its design features a smooth, polished finish, which not only looks great but also aids in the smooth flow of air and fuel.

The lower intake manifold (LIM) plays a crucial role in the engine's intake system by collecting air from the throttle bodies and distributing it to the engine's cylinders via the intake ports. The OEM 14003 08U00 LIM is also made from aluminum, ensuring a perfect match in material and construction to the UIM. The LIM is designed with precise, engineered ports, ensuring optimal airflow distribution for maximum engine performance.

This intake manifold setup also includes a 75mm BOV (Blow-Off Valve). The BOV is an essential component of the engine's turbocharging system, as it prevents the buildup of pressure in the intake manifold when the throttle is closed during deceleration. The 75mm size is a popular choice among performance enthusiasts, as it offers improved throttle response and turbo response.

In summary, the Nissan 14003 08U00 OEM upper and lower intake manifold and 75mm BOV are essential components of the RB25DET engine found in the 1993-1998 Skyline R33. They are made from high-quality aluminum, ensuring durability and optimal performance, and include a 75mm BOV for improved throttle response. These components are a must-have for anyone looking to upgrade their Skyline R33 or restore it to its original high-performance state.

Nissan Skyline R33 RB25DET Upper and Lower Intake Manifold (75T BOV): A Comprehensive Analysis

The Nissan Skyline R33 RB25DET upper and lower intake manifold with a 75T BOV (Bypass Valve) is a popular upgrade among Nissan Skyline enthusiasts. This component plays a crucial role in the engine's performance and intake system. Let's explore the potential pros and cons of purchasing this intake manifold.

1. Improved Air Flow: The 75T BOV intake manifold optimizes airflow, which results in increased power and torque. The BOV (Blow-Off Valve) helps control the pressure surges during deceleration, making the engine more responsive.

2. Enhanced Throttle Response: The intake manifold allows for improved throttle response, resulting in a more aggressive driving experience. This is especially noticeable during acceleration.

3. Better Idle Stability: The intake manifold is designed to provide better idle stability, which is essential for maintaining consistent engine performance. This can lead to improved fuel economy and reduced engine wear.

4. Increased Power: By optimizing airflow and improving throttle response, the intake manifold can lead to increased power output. This makes the engine more responsive and enjoyable to drive.

5. Cosmetic Appeal: The intake manifold is a visually appealing upgrade, adding to the overall aesthetic of the Nissan Skyline R33.

1. Complex Installation: Installing the intake manifold can be a complex process, especially for those who are not experienced in engine tuning. It may require additional modifications and calibration to ensure proper engine function.

2. Cost: The intake manifold is a relatively expensive upgrade, especially when compared to other performance modifications. This may be a significant investment for some enthusiasts.

3. Potential for Engine Damage: Improper installation or tuning of the intake manifold can lead to engine damage. This is a risk that must be carefully considered before making the purchase.

4. Maintenance: The intake manifold may require additional maintenance to ensure optimal performance. This includes regular checks of the BOV and potential adjustments to the intake system.

The Nissan Skyline R33 RB25DET upper and lower intake manifold with a 75T BOV is an attractive upgrade for enthusiasts looking to improve their engine's performance and driving experience. However, it comes with complex installation requirements, a significant investment, and the potential for engine damage if not installed correctly. Careful consideration and proper preparation are essential before making the purchase.

If you're an experienced enthusiast with a solid understanding of engine tuning and the necessary resources to install the intake manifold correctly, this upgrade can be an excellent addition to your Nissan Skyline R33. For those less experienced, it may be worth considering other modifications or seeking professional assistance to ensure proper installation and tuning. Ultimately, the decision to purchase the intake manifold depends on your experience level, budget, and desired performance improvements.

Details:

Used 1993 to 1998 Nissan Skyline R33 RB25DET Series 1/2 OEM Intake Manifold Upper and Lower w/BOV IC Piping. Will fit all RB25DET Series 1 and 2 Variants, NOT NEO, NEO Runners sizing is a little bit different, unless you wanna run it on will work just suck performance wise. No Sensors or Throttle Body. Product will have pictures taken of it Pre Package and Post Packaging any defects or cracks anything as needed.

Never needed it, took it off when this RB25DET Series 2 Motor was imported in 2022 as a secondary motor, has been storage since then. No Throttle Body, taken off car when motor was imported 3 years ago, never used, bare bones Intake Manifold.

part #: 1400308u00 prices

• $183.34-$189.04

specifications inputmanifolds:

• for models: Rb25det
• for makes: Nissan
• for years: 1993-1998
• mounting style: Bolt-on
• color: Silver
• manufacturer part number: 14003 08U00
• cylinder head type: In-line Cross-flow
• material: Cast Iron
• item length: 15.7
• vintage part: Yes
• placement on vehicle: Left, Lower, Upper
• fuel type: Gasoline
• california prop 65 warning: Oem Part, Non Modded, Should Be Allowed
• type: Intake Manifold
• engine size: 151 In
• item height: 31.5
• features: Bare, Unfinished, Oem
• universal fitment: No
• item width: 17.7
• country of origin: Japan

offer inputmanifolds:

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

seller inputmanifolds:

• rating: 100.0%
• city: Kansas City, Missouri
• # reviews: 36

returns inputmanifolds:

• policy: No Returns

general inputmanifolds:

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

shipping inputmanifolds:

• service: USPS Ground Advantage, UPS Ground, FedEx Ground / FedEx Home Delivery
• transit: 5-9 Days
• cost: $119.01
• type: Calculated
• carrier: USPS, UPS, FedEx
• class: Standard

payments inputmanifolds:

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

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