The cost for a BMW 03 Series (E21) (1975 – 1982) motor mount replacement is between $108.99 and $212.99.
The motor mount part cost for BMW 03 Series (E21) (1975 – 1982) is between $33.99 and $62.99 (per mount) while labor costs are between $75 and $150.
- BMW 03 Series (E21) (1975) Motor mount replacement cost is $108.99 ($33.99 for the motor mount and $75 labor cost)
- BMW 03 Series (E21) (1976) Motor mount replacement cost is $123.99 ($33.99 for the motor mount and $90 labor cost)
- BMW 03 Series (E21) (1977) Motor mount replacement cost is $130.99 ($33.99 for the motor mount and $97 labor cost)
- BMW 03 Series (E21) (1978) Motor mount replacement cost is $155.99 ($45.99 for the motor mount and $110 labor cost)
- BMW 03 Series (E21) (1979) Motor mount replacement cost is $160.99 ($45.99 for the motor mount and $115 labor cost)
- BMW 03 Series (E21) (1980) Motor mount replacement cost is $202.99 ($62.99 for the motor mount and $140 labor cost)
- BMW 03 Series (E21) (1981) Motor mount replacement cost is $206.99 ($62.99 for the motor mount and $144 labor cost)
- BMW 03 Series (E21) (1982) Motor mount replacement cost is $212.99 ($62.99 for the motor mount and $150 labor cost)
How Many Motor Mounts Are In a BMW 03 Series (E21)
The BMW 03 Series (E21) has three motor mounts – one at the front of the engine, one in the center, and one at the back. The front mount is also known as a dogbone and is connected to both an aluminum support bracket and a steel transverse bar.
The center mount connects to the transmission housing, while the rear mount attaches to both a steel bracket and the car’s subframe. These mounts are designed to absorb vibrations from the engine and reduce noise levels inside the cabin.
It is important to keep all three mounts in good condition to ensure that your vehicle runs smoothly and safely. If any of these components become worn or damaged, they should be replaced immediately by an experienced mechanic or technician.
(See also: BMW X4 Motor Mount Replacement Cost (2014 – 2023))
What Is a Motor Mount In a BMW 03 Series (E21)
The motor mount in a BMW E21 is an essential component of the vehicle’s engine assembly.
It is designed to support and cushion the engine–transmission combination from vibrations, noise, and movement caused by engine torque, as well as any possible impacts from driving conditions.
The motor mount also helps keep other components free from excessive wear due to vibration or shock.
A typical BMW E21 motor mount consists of a metal bracket attached to the vehicle’s chassis with rubber bushings on either side.
The rubber bushings act like springs that absorb impact from the engine and reduce vibration.
They are connected to the metal bracket via a steel collar which prevents them from breaking off during heavy use or over time. The metal bracket is then secured in place with bolts and nuts.
The motor mount should be checked regularly for any wear or damage. It plays an important role in the safe and efficient operation of your BMW E21.
If you notice any signs of imbalance or wear, it’s important to replace the motor mount immediately to prevent further mechanical issues.
Additionally, if your vehicle has a significant amount of miles on it, replacing the entire engine assembly may be necessary due to age-related deterioration.
(See also: BMW X3 Motor Mount Replacement Cost (2004 – 2022))
Symptoms Related To a Bad Engine Mount in BMW 03 Series (E21)
- Excess engine vibration
- Rough idle
- Hard shifting
- Rattling noise
- Increased engine movement
Here are some common symptoms related to a bad engine mount in BMW 03 Series (E21):
The most common symptom of a bad engine mount in the BMW 03 Series (E21) is an excessive vibration coming from the engine. This vibration can range from mild to severe and will increase as the vehicle accelerates.
Another symptom related to this issue is a shifting feeling when accelerating or decelerating. This is caused by the movement of the engine when mounted improperly on its mounts.
3. Rattling Noises
Badly worn engine mounts can cause rattling noises that are particularly noticeable when accelerating or decelerating from a stoplight or stop sign.
Worn-out motor mounts can leak oil and you can check this by performing a visual inspection. Also, due to the shaking of the engine, some hoses carrying oil could burst and there will be significant oil leaks around the engine area.
5. Acceleration Problems
A bad engine mount can also affect the vehicle’s acceleration capabilities. When accelerating from a stop or at low speeds, the car may feel sluggish with little power behind it due to the motor mounts being unable to keep the engine steady.
How Often Do BMW 03 Series (E21) Engine Mounts Need To Be Replaced?
Engine mount replacement intervals can vary depending on the year and model of the car, but typically, they should be inspected every 15-20k miles and replaced every 40-50k miles.
The BMW 03 Series (E21) engine mounts are designed to last a long time. But, they may eventually wear out due to age, increased mileage, and exposure to the elements.
It is important to regularly inspect the engine mounts for signs of wear and tear. If an engine mount appears to be in poor condition or if there is excessive vibration or clunking coming from the engine compartment, it should be replaced as soon as possible.
Replacing worn engine mounts can help reduce vibrations caused by normal engine movement, reduce wear on other components like drive belts, and improve the overall performance of your vehicle.
Is It OK To Drive a BMW 03 Series (E21) With a Broken Motor Mount?
No, it is not safe to drive a BMW 03 Series (E21) with a broken motor mount. The motor mount helps to secure the engine and transmission to the frame of the vehicle. A broken or loose motor mount can cause vibrations and other issues that can damage your engine and create dangerous driving conditions.
If your car’s motor mount is broken, you should have it replaced immediately by a qualified mechanic. Driving with a broken or loose motor mount can also lead to steering issues and compromised handling due to the sudden movement of your engine during acceleration and braking.
Having a functional motor mount in place will help ensure that your vehicle remains stable on the road and won’t put you in danger while behind the wheel.
Replacing a worn-out motor mount on a BMW 03 Series (E21) costs between $108.99 and $212.99 from which the part (one mount) costs between $33.99 and $62.99 while labor costs between $75 and $150.