BMW Engine Automatic Transmission 300-70015B 3.0L N51 30422408

( Part Type: Engine Transmission ), ( Conditions Options: 3.0, Flr, At, Check ), ( Genuine Oem: Yes ), ( Ipn: 300-70015b ), ( Year: 2010 ), ( Manufacturer Warranty: 6 Month )

Review BMW Engine 3.0l Coupe N51 Automatic Transmission Fits fits 128I 2009–2013

Introducing the BMW N51 3.0L engine, a powerful and sophisticated powertrain option for select BMW 128i models produced between 2009 and 2013. This engine is a part of the renowned N51/N52/N55 family, known for its advanced technology and exceptional performance.

The BMW N51 3.0L inline-six-cylinder engine boasts a displacement of 3.0 liters and delivers a maximum power output of 230 horsepower at 6,600 rpm. The engine's maximum torque is rated at 201 lb-ft, which is available between 2,500 and 3,600 rpm. This powertrain is mated to an automatic transmission, ensuring smooth and effortless gear shifts.

One of the most notable features of the N51 engine is its Double-VANOS variable valve timing system. This technology optimizes the intake and exhaust valve timing based on engine speed and load, leading to increased power and torque, as well as improved fuel efficiency and reduced emissions.

Additionally, the N51 engine is equipped with BMW's High Precision Direct Fuel Injection system. This advanced technology delivers fuel directly into the combustion chamber, allowing for more precise and efficient combustion. As a result, the engine achieves impressive fuel economy and reduced emissions.

The N51 engine block is made of aluminum, which contributes to its lightweight and robust construction. The engine's cylinder bores are lined with a silicon-aluminum alloy sleeves, providing excellent heat dissipation and durability. The engine's cylinder head is also made of aluminum, and it features four valves per cylinder and double overhead camshafts.

The N51 engine's cooling system is designed to ensure optimal engine performance in various driving conditions. The engine features a water pump with a thermostat, as well as a coolant reservoir. The cooling system also includes an engine oil cooler and a transmission oil cooler, which help maintain optimal operating temperatures for both the engine and transmission.

In summary, the BMW N51 3.0L engine is a sophisticated and powerful powertrain option for the 128i models produced between 2009 and 2013. With its advanced technology, including Double-VANOS variable valve timing and High Precision Direct Fuel Injection, the N51 engine delivers impressive power and torque, as well as excellent fuel efficiency and reduced emissions. The engine's lightweight and robust construction, combined with its sophisticated cooling system, ensure optimal performance in various driving conditions.

The BMW 3.0L N51 engine with an automatic transmission, as used in the 128i model from 2009 to 2013 (model code 30422408), is a popular choice among BMW enthusiasts and those looking for a refined driving experience. However, like any engine, it comes with its own set of pros and cons.

1. Smooth Power Delivery: The N51 engine delivers power smoothly and linearly, providing a responsive driving experience.

2. Fuel Efficiency: Compared to its predecessors, the N51 engine offers improved fuel economy, making it a more cost-effective choice in the long run.

3. Reliability: The N51 engine is known for its durability and reliability, which is a major advantage for BMW owners.

4. Refinement: The engine is refined and quiet, providing a luxurious and comfortable driving experience.

1. Maintenance Costs: The N51 engine requires regular maintenance, including a timing chain replacement every 100,000 miles. This can add up to significant maintenance costs over the life of the engine.

2. Performance: While the N51 engine delivers smooth power, it may not be as quick or responsive as some other BMW engines.

3. Complexity: The N51 engine is a complex design, with many intricacies that can make repairs and maintenance more challenging and expensive.

The BMW 3.0L N51 engine with an automatic transmission offers a smooth and refined driving experience, improved fuel efficiency, and reliable performance. However, it comes with the drawbacks of high maintenance costs and complexity, which can make it a more expensive choice in the long run.

If you are looking for a BMW with a refined and smooth driving experience and are willing to accept the higher maintenance costs, then the 3.0L N51 engine with an automatic transmission could be a good choice for you. However, if you are looking for a more affordable and less complex engine, you may want to consider other options such as the N52 or N55 engines. Ultimately, it is important to weigh the pros and cons carefully and make an informed decision based on your personal preferences and budget.

Details:

Check with the dealer as components may be different. Warranty does not include shift motor, switches, sensors, or seals. Radiators must be flow tested or replaced receipts required. Small Parcel Shipping UPS/FedEx: Free shipping on all small parcel orders.

Inspect and replace as needed. Must be installed and inspected by a factory trained certified technician. Timing belts, thermostat, water pump and other maintenance items must be replaced. Purchaser must replace seals, gaskets, and filter before installation re-seal the oil pan.

Torque converter must be properly seated and aligned to the front pump. Residential delivery is not included in the free shipping. Transfer Case. BMW 128I 09-13 3.0L, Cape, N51 engine, AT.

Confirm proper gear ratio prior to installation. Cooling lines must be flushed of debris before installing. Inspect and replace seals gaskets as needed. Brakes, seals, sensors, and lines should be inspected replaced as needed.

B R Automotive does not guarantee mileage. Contact B R immediately prior to removing or repairing any components. No Labor or any other charges related to the sale installation of this product are warranted. Engine oil pans must be re-sealed.

If heat tabs are melted or removed, warranty void. We remove oil pans to inspect automatic transmissions. Fill with fluid according to manufacturers recommended type and level.

part #: 128i prices

• $1314.84-$1696.68

specifications grokengines:

• for models: 128i
• for makes: Bmw
• for years: 2009-2013
• part type: Engine Transmission
• conditions options: 3.0, Flr, At, Check
• genuine oem: Yes
• ipn: 300-70015b
• year: 2010
• manufacturer warranty: 6 Month

offer grokengines:

• quantity: 1
• started: October 31, 2025
• availability: In Stock
• options: Ship-to-home
• sold: 0
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• class: Freight
• cost: $149.00
• type: Fixed

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• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Engines

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• # reviews: 64632
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• city: Corvallis, Oregon

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• paid by: Buyer
• policy: Returns Accepted
• time: 60 Days

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