Car Parts That Start With The Letter U

15 Car Parts That Start With The Letter U

If you are looking for some car parts that start with U, you have come to the right place. This article will provide you with an in-depth guide to 15 car parts starting with the letter U.

From the U-joint to the urethane suspension bushing, I will explain each of them in detail, their importance, and how they function in your vehicle.

So, without further ado, let’s dive into the world of car parts starting with U, and learn how they contribute to the overall performance of a vehicle.


Car Parts That Start With The Letter U

Below are some car parts starting with the letter U (In alphabetical order):

1. U-joint

The U-joint, also known as a universal joint, is a critical part of your vehicle’s drivetrain system. It allows the driveshaft to flex while still transmitting power to the rear wheels. The U-joint is made up of two U-shaped yokes connected by a cross-shaped bearing. It is essential to keep the U-joint lubricated to prevent it from wearing out prematurely.

2. Ultra-cap

An ultra-cap is a device that stores electrical energy and releases it quickly. It is commonly used in hybrid and electric vehicles as a power source for the car’s electric motor. Ultra-caps can be charged and discharged repeatedly without any adverse effects, making them an excellent choice for energy storage.

3. Ultra-filter

The ultra-filter is a type of air filter that removes microscopic particles from the air before it enters the engine. These filters can capture particles as small as 0.1 microns, making them highly effective at preventing engine damage from dust and other contaminants.

4. Ultrasonic Sensor

The ultrasonic sensor is a device that uses sound waves to detect objects. It is commonly used in parking sensors and collision avoidance systems. Ultrasonic sensors emit high-frequency sound waves that bounce off nearby objects and return to the sensor. By measuring the time it takes for the sound waves to return, the sensor can determine the object’s distance.

5. Underbody Shield

The underbody shield is a protective cover that is installed underneath the vehicle’s body. It is designed to protect the undercarriage from damage due to road debris, rocks, and other hazards. The underbody shield is typically made from durable materials such as plastic or metal.

6. Universal Catalytic Converter

The universal catalytic converter is a device that reduces harmful emissions from your vehicle’s exhaust system. It converts harmful pollutants such as carbon monoxide and nitrogen oxide into less harmful substances such as water vapor and carbon dioxide. Universal catalytic converters can be used in a wide range of vehicles and are designed to fit most exhaust systems.

7. Universal Joint

The universal joint, also known as a U-joint, is a component that connects the driveshaft to the transmission and rear axle.

8. Unleaded Gas

Unleaded gas is a type of gasoline that does not contain lead. It was introduced in the 1970s as a replacement for leaded gasoline, which was found to be harmful to the environment and human health. Unleaded gas is now the standard fuel for most vehicles, and it provides cleaner burning and better fuel efficiency.

9. Upper Control Arm

The upper control arm is a component of the suspension system that connects the upper part of the wheel hub to the vehicle’s frame. It is responsible for controlling the vertical movement of the wheel and helps to maintain proper alignment. The upper control arm is typically made from sturdy materials such as steel or aluminum.

10. Upper Intake Manifold

The upper intake manifold is a component of the engine’s air intake system that is responsible for delivering air to the engine’s combustion chambers. It is typically made from durable materials such as plastic or aluminum and is designed to withstand high temperatures and pressures.

11. Upper Radiator Hose

The upper radiator hose is a component of the vehicle’s cooling system that connects the radiator to the engine. It is responsible for transporting coolant from the engine to the radiator, where it is cooled before being circulated back to the engine. The upper radiator hose is typically made from durable materials such as rubber or silicone.

12. Upper Strut Mount

The upper strut mount is a component of the suspension system that connects the strut assembly to the vehicle’s frame. It is responsible for supporting the weight of the vehicle and helping to absorb shocks and vibrations. The upper strut mount is typically made from sturdy materials such as steel or aluminum.

13. Upper Timing Chain

The upper timing chain is a component of the engine’s timing system that helps to control the timing of the engine’s valves. It is typically made from durable materials such as steel or high-strength plastic and is designed to withstand high temperatures and pressures.

14. Upstream Oxygen Sensor

The upstream oxygen sensor is a component of the vehicle’s emissions system that is responsible for measuring the amount of oxygen in the exhaust gas. It helps to ensure that the engine is running efficiently and that emissions are kept to a minimum. The upstream oxygen sensor is typically located near the engine’s exhaust manifold.

15. Urethane Suspension Bushing

The urethane suspension bushing is a type of suspension bushing that is made from durable urethane material. It is used in the vehicle’s suspension system to help absorb shocks and vibrations and provide a smoother ride. Urethane suspension bushings are known for their durability and resistance to wear and tear.


In conclusion, car parts that start with U are essential components of your vehicle that play a critical role in its function and performance.

Understanding these U-lettered parts and their functions can help you to maintain your vehicle and ensure that it runs optimally.

Do you know any other car parts that start with the letter U that are not in the list? Share your answers in the comment section below and I’ll update the list as soon as possible.

And, if you are looking for other car parts that starts with other letters, make sure you check my blog posts related to car parts starting with other letters. Such as:

  • Car Parts Start With Letter S
  • Car Parts Start With Letter T
  • Car Parts Start With Letter V
  • Car Parts Start With Letter W

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