MERCEDES Automatic Transmission 400-51674 Benz 221 31662175

( Manufacturer Part Number: S550 ), ( Part Type: Transmission ), ( Conditions Options: 5.5, Col, 7at, Rwd ), ( Genuine Oem: Yes ), ( Ipn: 400-51674 ), ( Make: Mercedes-benz ), ( Manufacturer Warranty: 6 Month )

Review MERCEDES benz Automatic Transmission 221 Type S class fits S550 RWD 2010–2011

Introducing the Mercedes-Benz 400 Automatic Transmission, a premium component engineered specifically for the Mercedes-Benz S550 RWD 10-11 S-Class model with chassis code 31662175. This automatic transmission, identified by the part number 221, is a key element of the vehicle's powertrain system.

The Mercedes-Benz 400 Automatic Transmission is a sophisticated 7G-Tronic Plus unit, boasting seven forward gears and one reverse gear. Its advanced design ensures smooth, efficient power delivery and exceptional driving comfort, making it the perfect match for the luxurious and powerful S550 RWD 10-11 S-Class sedan.

The transmission features adaptive shift programs that learn the driver's preferences and adjust shift points accordingly, ensuring an engaging and tailored driving experience. It also incorporates Mercedes-Benz's Controlled Efficiency system, which optimizes fuel consumption and reduces emissions by coordinating engine and transmission control systems.

This transmission is built to last, with a robust construction and the latest technologies to ensure reliability and durability. It is designed to handle the impressive torque output of the S550's powerful engine, providing seamless gear changes and exceptional performance.

The Mercedes-Benz 400 Automatic Transmission is also equipped with a number of advanced safety and diagnostic features. It includes a torque converter lock-up clutch to improve efficiency and reduce wear, as well as an automatic transmission oil temperature sensor to monitor oil temperature and prevent potential issues.

In summary, the Mercedes-Benz 400 Automatic Transmission 221 is a top-of-the-line component designed specifically for the Mercedes-Benz S550 RWD 10-11 S-Class. Its advanced design, sophisticated technology, and robust construction make it a reliable and efficient powertrain solution, ensuring a luxurious and exhilarating driving experience.

The Mercedes-Benz S550 RWD 10-11 model year with the 400 series automatic transmission (model number 221) is a luxury vehicle known for its superior performance, comfort, and advanced features. Here are some pros and cons of buying this specific car model:

1. Smooth and responsive automatic transmission: The 221 transmission offers seamless gear shifts and excellent torque conversion, making for a comfortable and engaging driving experience.

2. Powerful engine: The S550 is equipped with a powerful 4.7-liter V8 biturbo engine, delivering impressive acceleration and ample power for passing and merging.

3. Advanced technology: This model comes with several advanced features, such as COMAND infotainment system, adaptive cruise control, and a panoramic sunroof, enhancing the driving experience and providing added convenience.

4. Rear-wheel drive: The rear-wheel drive system provides excellent handling and stability, making the S550 an enjoyable car to drive, especially in dry conditions.

5. Comfort and luxury: The S550 offers a luxurious interior with top-notch materials, comfortable seating, and advanced climate control systems, making for a refined and relaxing driving experience.

1. Fuel efficiency: With its powerful engine and large size, the S550 is not the most fuel-efficient vehicle on the market, which could result in higher fuel costs for some owners.

2. Price: The Mercedes-Benz S550 is a luxury vehicle, and the cost of purchasing and maintaining one can be quite high compared to other cars in its class.

3. Size and maneuverability: Due to its size and weight, the S550 can be challenging to maneuver in tight spaces and may require extra care when parking.

4. Maintenance costs: Luxury vehicles like the S550 require regular maintenance, which can be costly, especially for components like the transmission and engine.

The Mercedes-Benz S550 RWD 10-11 model year with the 221 automatic transmission is an excellent choice for those seeking a luxury car with powerful performance, advanced features, and a comfortable driving experience. However, potential buyers should be prepared for the higher cost of ownership, including fuel and maintenance expenses. Ultimately, if the benefits of owning a luxury vehicle with a smooth automatic transmission, powerful engine, and advanced technology outweigh the costs, this car could be an excellent investment for the right buyer.

If you are considering purchasing the Mercedes-Benz S550 RWD 10-11 model year with the 221 automatic transmission, I would recommend doing thorough research on the car's features, pricing, and maintenance costs to determine if it is the right fit for your budget and driving needs. Additionally, consider test-driving the vehicle to experience its performance and comfort firsthand. If you decide to purchase, be sure to follow the recommended maintenance schedule and keep up with routine maintenance to ensure the longevity and enjoyment of your new luxury car.

Details:

Engine oil pans must be re-sealed. Timing belts, thermostat, water pump and other maintenance items must be replaced. Confirm proper gear ratio prior to installation. Check with the dealer as components may be different.

Residential delivery is not included in the free shipping or our regional charges. Brakes, seals, sensors, and lines should be inspected replaced as needed. NOTE: TORQUE CONVERTER is included If equipped. Transfer Case.

Warranty does not include shift motor, switches, sensors, or seals. If heat tabs are melted or removed, warranty void. B R Automotive does not guarantee mileage. Fill with fluid according to manufacturers recommended type and level.

Must be installed and inspected by a factory trained certified technician. Torque converter must be properly seated and aligned to the front pump. No Labor or any other charges related to the sale installation of this product are warranted. Contact B R immediately prior to removing or repairing any components.

Small Parcel Shipping UPS/FedEx: Free shipping on all small parcel orders. Inspect and replace seals gaskets as needed. Purchaser must replace seals, gaskets, and filter before installation re-seal the oil pan. We remove oil pans to inspect automatic transmissions.

Radiators must be flow tested or replaced receipts required. Inspect and replace as needed. Cooling lines must be flushed of debris before installing.

part #: s550 prices

• $500.00-$1166.68

specifications complmanu:

• for models: S550, Rwd
• for makes: Mercedes
• for years: 2010-2011
• mpn: S550
• part type: Transmission
• conditions options: 5.5, Col, 7at, Rwd
• genuine oem: Yes
• ipn: 400-51674
• make: Mercedes-benz
• manufacturer warranty: 6 Month

payments complmanu:

• wallet: Google-pay
• credit card: Visa
• other

seller complmanu:

• rating: 98.3%
• city: Henderson, Nevada
• # reviews: 69054

returns complmanu:

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

offer complmanu:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• best offers: True
• sold: 0
• started: March 3, 2026

general complmanu:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

shipping complmanu:

• class: Freight
• cost: $149.00
• type: Fixed
• service: Flat Rate Freight

Mercedes S550 Is Similar To:

• 111 261 0501 Mercedes-benz A2 (26.4% similar) The coupe was a daily driver with well functioning transmission until it had an accident. I pulled the cover for inspection and there are absolutely no loose bearings nor chipped teeth. Obviously a recent rebuild. Also included is the telephone tech help and free shipping in continental USA. The ...(January 7th, 2018)
• 1112610301 Mercedes Speed Manual Transmission (35% similar) Condition is visible in the photos. All parts are tested on the car then whenever possible go through secondary bench testing. This part may be listed to fit the year and model of car, that does not mean it will automatically in your vehicle. Untested sold as-is and should be thoroughly tested ...(July 25th, 2018)
• 1152612501 Mercedes-benz 300d 4 Speed (31% similar) This part may be listed to fit the year and model of car, that does not mean it will automatically in your vehicle. Condition is visible in the photos. This is a quality used mercedes-benz part in good condition and does show signs of use. All parts are tested on the car then whenever possible go ...(May 15th, 2017)
• 1232601201 Mercedes Manual Transmission Rods (39.7% similar) Good used 4-SPEED manual transmission, as shown. Miles unknown. Includes all three shiftier rods these are often missing and hard to find absolutely necessary for doing a swap...(October 15th, 2018)
• 1232602001 Mercedes-benz Mercedes Manual Transmission 717.400 For (39.5% similar) It does not cover rubber parts, gaskets or filters. Please at benz if you do not see what you're looking for or have a specific parts request. Pulled from an W460 300GD. Oe mercedes used 5-SPEED manual transmission. No longer available new or remanufactured from mercedes. MB pn: in good working ...(February 26th, 2018)
• 1232602301 Mercedes-benz Mercedes Manual Transmission 717.402 Remanufactured (36.9% similar) Please if you're interested in purchasing these. Mates to the M116 and M117 gas motors found in C107 R107 chassis. MB pn: series is 717. Oe remanufactured mercedes 5-SPEED manual transmission. Genuine mercedes-benz. Will also fit other chassis vehicles with this series of motors W108, W109, W111, ...(February 26th, 2018)
• 124 260 0101 717 411 Mercedes Manual Transmission Amg (33.1% similar) 3 donor vehicle had 105K miles upon removal and was parted out due to a crash rollover. This is a great opportunity to convert your automatic manual. All 5 gears shift smoothly without any grinds or pop-outs. See more photos below. There are no leaks from any part of the transmission. Please look up...(July 17th, 2018)
• 140-270-54-00 S Mercedes-benz 1402706600 Transmission (41.4% similar) Mercedes-benz transmission S500. 62 500SEC 500SEL 500SL SL500 SL60...(February 2nd, 2018)
• 201 260 04 01 717.404 Getrag Mercedes Benz Dogleg Transmission (33.8% similar) Dogleg manual transmission from a mercedes 190E 3/1 6v or...(April 1st, 2019)
• 202-270-51-00 722.605 S Mercedes-benz 2022705100 (28.6% similar) Mercedes-benz 722. 605 transmission SLK230 W210-0502 S320 E320 320SLK 320CLK C220...(February 2nd, 2018)
• 2042704900 E550 10 11 Mercedes E350 Automatic Transmission 207 Type At Conv Id 400-51832 (52.2% similar) 10 11 mercedes E350 automatic transmission 207 type at con E550 id month money back guarantee. Please directly to make arrangements. Please for a quote. Please for a quote...(September 29th, 2016)