Gearbox Mounting Nissan NV350 2014-Onwards

The Gearbox Mounting (also known as a transmission mount) for the Nissan NV350 (2014 model and onward) is a crucial component that helps support and stabilize the gearbox within the vehicle's chassis. It ensures that the transmission is securely attached to the vehicle's frame and helps reduce vibrations and movement, providing a smooth driving experience.

1. Compatibility
   Vehicle: Nissan NV350 (2014 and newer models)
   Location: The gearbox mounting is located between the vehicle's transmission (gearbox) and the chassis. It is typically positioned at the rear of the transmission assembly and is connected to the vehicle's subframe.
   Transmission Type: Suitable for both manual and automatic transmissions, depending on the specific configuration of the NV350.

2. Purpose and Function
   Support for the Gearbox: The gearbox mounting's primary function is to support the weight of the transmission, securing it to the vehicle's frame and preventing it from moving excessively during vehicle operation.
   Vibration Reduction: The mount is designed to absorb and isolate vibrations generated by the transmission and engine, preventing them from being transferred to the cabin. This helps reduce noise, vibration, and harshness (NVH), improving overall comfort.
   Alignment and Stability: The mount ensures that the transmission remains properly aligned with the engine and driveshaft. It prevents unwanted movements of the transmission, especially during acceleration, deceleration, and shifting, which helps protect other drivetrain components.
   Shock Absorption: It helps absorb the shock and stresses that occur when driving over uneven surfaces, reducing the impact on the transmission and ensuring its longevity.

3. Construction and Materials
   Rubber Insulator: The key feature of the gearbox mount is the rubber insulator or bushing. This rubber component is designed to absorb vibrations and shocks. It acts as a cushion between the transmission and the vehicle's frame, reducing noise and wear on the transmission.
   The rubber is typically made from a high-strength, durable compound that is resistant to heat, oil, and other fluids that could leak from the engine or transmission.
   Metal Brackets: The mount consists of steel or aluminum brackets that attach to both the transmission and the chassis. These brackets are designed for strength and durability, providing a secure connection between the transmission and the vehicle's body.
   Corrosion Resistance: The metal parts of the gearbox mount are usually coated with an anti-corrosion finish (such as zinc plating or powder coating) to prevent rusting and extend the lifespan of the component.
   Bolts and Fasteners: Heavy-duty bolts and fasteners are used to attach the mount securely to the gearbox and vehicle frame. These fasteners are designed to handle the stresses of daily driving and the torque generated by the engine and transmission.

4. Design Features
   Isolating Vibration: The gearbox mount is designed with rubber bushings that act as insulators. This prevents vibrations from being transmitted directly to the vehicle's frame, improving ride comfort and reducing cabin noise.
   Flexibility and Rigidity Balance: The mount is engineered to provide a balance between flexibility and rigidity. It needs to be flexible enough to absorb vibrations and shocks but rigid enough to hold the transmission securely in place.
   Precise Fit: The gearbox mount is manufactured to precisely fit the Nissan NV350's chassis and transmission. This ensures easy installation and a proper, secure fit, which is crucial for the correct functioning of the drivetrain.

5. Common Symptoms of a Worn Gearbox Mount
   Over time, gearbox mounts can wear out due to constant exposure to stress, heat, and engine vibrations. Some common signs of a failing gearbox mount include:
   Increased Vibration: When the rubber bushing deteriorates, the mount may no longer absorb vibrations effectively. This can result in increased vibration felt in the cabin, especially during acceleration or gear shifts.
   Excessive Engine/Transmission Movement: A worn or damaged mount may allow the transmission to shift or move excessively. This can cause clunking or knocking noises during gear changes or acceleration.
   Misalignment of Drivetrain Components: A failing gearbox mount can lead to misalignment between the engine, transmission, and driveshaft. This can cause premature wear of other drivetrain components.
   Clunking or Banging Noises: When accelerating, decelerating, or shifting gears, a failing mount may cause the transmission to hit other components, resulting in a clunking or banging sound.
   Gear Shifting Issues: A loose or misaligned gearbox can cause difficulties in shifting gears, especially in manual transmissions. It can make gear shifts feel rough or imprecise.

6. Durability and Longevity
   Long-Lasting Materials: The gearbox mounting for the Nissan NV350 is designed to be durable and long-lasting, often able to withstand years of use before showing signs of wear. However, exposure to heat, oil, and road conditions can accelerate wear.
   Regular Maintenance: Regular inspection of the gearbox mount during routine vehicle maintenance is essential to ensure it remains in good condition. A failing gearbox mount should be replaced promptly to avoid further damage to the transmission or other drivetrain components.

7. Replacement and Installation
   Direct Replacement: When replacing a gearbox mount, it's important to use an OEM (Original Equipment Manufacturer) or high-quality aftermarket part that is designed specifically for the Nissan NV350. This ensures a perfect fit and the right balance between rigidity and flexibility.
   Installation Process:
   The process involves lifting the vehicle to access the underside where the gearbox is located.
   The old mount is unbolted and removed from the transmission and chassis.
   The new mount is positioned, and the bolts are tightened to the specified torque.
   It's essential to ensure that the transmission is properly supported during the replacement process to prevent any damage.
   Professional Replacement: Due to the weight of the transmission and the precision required for correct alignment, it's often recommended that gearbox mounts be replaced by a qualified mechanic.

8. Aftermarket and OEM Options
   OEM Gearbox Mounts: Original parts from Nissan ensure a perfect fit and maintain the vehicle's factory specifications. These are generally preferred for maintaining the vehicle's performance and longevity.
   Aftermarket Options: High-quality aftermarket mounts may offer cost savings and, in some cases, performance benefits such as enhanced vibration dampening or stronger materials. However, care should be taken to choose a reliable manufacturer to avoid premature wear or fitment issues.

The Gearbox Mounting for the Nissan NV350 (2014 and onward) is a vital part of the vehicle's drivetrain. It provides support for the transmission, absorbs vibrations, and ensures the gearbox remains securely aligned with the rest of the drivetrain. Made from durable materials like steel, aluminum, and rubber, it is designed for long-term use but can wear out over time due to the stresses of driving. Regular maintenance and timely replacement of a worn mount are crucial to maintaining a smooth and comfortable driving experience, as well as ensuring the longevity of the transmission and other related components.

What's in the box
1 x Gearbox Mounting Nissan NV350 2014-Onwards