MAZDA Throttle Body Intake RX-7 FCS5 13B N350-13-112A

( Mounting Style: Bolt-on ), ( Type: Intake Manifold ), ( Items Included: Gasket ), ( Manufacturer Part Number: N35013112A ), ( Material: Aluminum ), ( Features: Heat-resistant ), ( Universal Fitment: No ), ( Placement On Vehicle: Upper ), ( Fuel Type: Gasoline )

Review MAZDA Rx-7 13b Throttle Body To Intake fits 1989–1991

The Mazda RX-7 FCS5 13B Throttle Body Intake N350-13-112A is a high-performance upgrade for the 1989-1991 Mazda RX-7 models. This intake system is designed to enhance the engine's breathing capability, leading to improved power output and throttle response.

The intake system consists of a high-flow throttle body and a smooth-flowing intake manifold. The 13B throttle body features a large 70mm diameter bore, which allows for a greater volume of air to flow into the engine at any given time. The butterfly throttle plate is made of lightweight yet robust materials, ensuring quick response and precise control.

The intake manifold is designed with a short runner length to provide optimal air/fuel mixture distribution to the engine's cylinders. The smooth, flowing design of the intake manifold minimizes turbulence and friction, ensuring maximum power output and efficient combustion.

This intake system is designed as a direct replacement for the stock intake system. The installation process is straightforward, requiring no major engine modifications. The intake system comes complete with all necessary hardware and gaskets for easy installation.

The Mazda RX-7 FCS5 13B Throttle Body Intake N350-13-112A is an excellent choice for Mazda RX-7 owners seeking to extract more power and performance from their rotary engine. With its large throttle bore, smooth intake manifold, and easy installation, this intake system offers a significant improvement in power and throttle response, making it a popular choice among RX-7 enthusiasts.

The Mazda RX-7 FCS5 13B Throttle Body Intake N350-11-112A is a performance part designed to enhance the air intake system of the 13B rotary engine found in Mazda RX-7 models from 1989 to 1991. This intake system is known for its Free-Flowing Cold Air Supply (FCS) design, which aims to improve engine performance by providing denser and cooler air to the engine.

1. Enhanced engine performance: By increasing the volume and velocity of the air flowing into the engine, the FCS5 intake can potentially improve power output and throttle response.

2. Improved fuel efficiency: With more efficient combustion, the engine may consume less fuel, leading to better fuel economy.

3. Better idling stability: The FCS5 intake may help provide better idle stability, reducing the need for constant adjustments to the engine's fuel-air mixture.

4. Enhanced engine sound: This intake system may provide a more exhilarating engine sound due to the increased airflow and the potential for a freer-flowing exhaust.

1. Complex installation: Installing this intake system may require some expertise and experience, as it involves the removal of various engine components and the proper alignment of the intake tubing.

2. Potential for increased engine noise: The increased airflow through the engine may result in more engine noise, which some drivers may find unappealing.

3. Cost: The FCS5 intake system is a premium performance part, and its cost may be a consideration for some buyers.

4. Potential for increased air filtration needs: The increased airflow may require more frequent air filter replacements to maintain optimal engine performance.

In conclusion, the Mazda RX-7 FCS5 13B Throttle Body Intake N350-11-112A is a high-performance part that can potentially improve engine power, fuel efficiency, and idle stability. However, its complex installation, potential for increased engine noise, cost, and increased air filtration needs are important considerations.

If you are a serious Mazda RX-7 enthusiast looking to maximize your engine's performance, the benefits of this intake system may outweigh the cons. However, if you are a casual driver or budget-conscious, you may want to consider other options or wait until you have more experience and resources to install this intake system properly. Ultimately, the decision to buy this intake system depends on your personal goals, budget, and level of expertise.

Details:

OEM Part Number: N350-13-112A Date stamped 89.1.18 on the gasket face, confirming original S5 production fitment. Fits: 1989 1991 Mazda RX-7 FC3S Series 5 S5, 13B NA / Non-Turbo only, condition: Used OEM pull. Used OEM throttle body / intake manifold gasket pulled from a 1989 1991 Mazda RX-7 FC3S Series 5 naturally aspirated application.

part #: n35013112a prices

• $21.11-$39.00

specifications inputmanifolds:

• for makes: Mazda
• for years: 1989-1991
• mounting style: Bolt-on
• type: Intake Manifold
• items included: Gasket
• manufacturer part number: N35013112A
• material: Aluminum
• features: Heat-resistant
• universal fitment: No
• placement on vehicle: Upper
• fuel type: Gasoline

returns inputmanifolds:

• policy: No Returns

shipping inputmanifolds:

• transit: 6-10 Days
• class: Standard
• service: USPS Ground Advantage
• cost: $10.50
• type: Calculated
• carrier: USPS

general inputmanifolds:

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

offer inputmanifolds:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: April 4, 2026
• quantity: 1

seller inputmanifolds:

• # reviews: 14
• rating: 100.0%
• city: Aberdeen, Washington

payments inputmanifolds:

• wallet: Paypal
• other
• credit card: Visa

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