BMW 21-20-5-A40-868 Flywheel

( Manufacturer Part Number: 21-20-5-A40-868 ), ( Part Type: Flywheel ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Replaces Part Number: 21-20-8-655-638 )

Review BMW Genuine Mass Flywheel fits TWIN

The BMW 21-20-5-A40-868 Twin Flywheel is a high-performance component designed for use in BMW engines, specifically those with a part number of M30B35 or M30B37. This flywheel is manufactured by ATE, a renowned automotive components supplier known for its expertise in braking and engine components.

The twin flywheel design is a significant upgrade from a standard single flywheel. It features two heavy-duty steel flywheels bolted together with a thin, rigid clutch disc in between. This setup provides superior engine smoothness, responsiveness, and power delivery compared to a single flywheel. It also reduces the engine's rotational mass, allowing for quicker revs and more efficient power transfer.

The BMW 21-20-5-A40-868 Twin Flywheel is made from a high-strength, forged steel material that ensures robustness and durability. The flywheels are precision-machined to ensure a perfect fit and smooth operation. The clutch disc is made of asbestos-free organic material that offers excellent grip and durability.

This twin flywheel assembly is designed to fit BMW engines with a crankshaft flange diameter of 148mm and a clutch plate diameter of 242mm. It comes with a replacement pressure plate and release bearing, making it a complete clutch kit. The kit also includes new mounting bolts and an alignment tool to ensure proper installation.

Installing this twin flywheel assembly requires professional expertise and specialized tools, as it involves disassembling the engine and transmission. However, the result is a significantly upgraded engine performance, making it an excellent choice for BMW enthusiasts seeking more power and responsiveness from their vehicles.

In summary, the BMW 21-20-5-A40-868 Twin Flywheel by ATE is a high-performance engine component designed for BMW engines with part numbers M30B35 and M30B37. It offers superior engine smoothness, responsiveness, and power delivery through its twin flywheel design, made of high-strength, forged steel material. The kit includes a replacement pressure plate, release bearing, mounting bolts, and an alignment tool. However, professional installation is required.

The BMW 218i with the TwinPower Turbo 8-speed Steptronic transmission and a 2-piston twin-flywheel differential (model number: A40-868) is a high-performance compact sports sedan. Here are some pros and cons of buying this BMW model to help you make an informed decision:

1. Power and Performance: The 2-liter, 4-cylinder BMW TwinPower Turbo engine delivers 136 hp and 221 lb-ft of torque, ensuring responsive acceleration and agile handling.

2. Smooth Transmission: The 8-speed Steptronic Sport transmission offers seamless gear shifts, providing an enjoyable driving experience.

3. Enhanced Driving Dynamics: The 2-piston twin-flywheel differential improves power delivery to the wheels, resulting in improved traction and better handling.

4. Fuel Efficiency: With a combined fuel consumption of 32.5 mpg, this BMW model offers impressive fuel efficiency for a high-performance sedan.

5. Advanced Technology: The BMW 218i comes with advanced features like iDrive 6.0 system with a 6.5-inch touchscreen display, Bluetooth connectivity, and a premium Harman Kardon sound system.

1. Cost: The BMW 218i is a premium vehicle, and its price tag may be out of reach for some buyers.

2. Limited Cargo Space: The compact sedan's trunk offers only 13 cubic feet of cargo space, which can be limiting for those who need to carry larger items.

3. Ride Comfort: The sport-tuned suspension may not provide the smoothest ride, making it less suitable for those looking for a comfortable daily driver.

4. Maintenance Costs: BMW vehicles are known for their high maintenance costs, which can add up over the years.

5. Limited Customization: While the BMW 218i comes with a long list of standard features, there is limited room for customization, particularly in terms of exterior appearance.

In conclusion, the BMW 218i with the A40-868 twin-flywheel differential is an excellent choice for those seeking a high-performance compact sedan with impressive handling, fuel efficiency, and advanced technology. However, its premium price tag, limited cargo space, and potentially less comfortable ride may deter some buyers. Ultimately, it's essential to weigh the pros and cons and consider your personal preferences and needs before making a decision.

If you are in the market for a compact sports sedan with excellent performance, impressive fuel efficiency, and advanced technology, the BMW 218i with the A40-868 twin-flywheel differential is a solid option to consider. However, if cost is a concern, or you require more cargo space or a smoother ride, you may want to explore other models in the market.

Details:

Listing Photo/Quantity, is for a quantity of one even if the listing photo shows multiple items. Box addresses. Products shown are not actual size. Free shipping applies to the continental USA only and does not include P.O.

Some products and colors may vary slightly from picture shown. Items accepted for return must be brand new and uninstalled with the original factory packaging showing part number. Listing is for a quantity of one item even if the listing photo shows multiple items.

part #: 21205a40868 prices

• $500.00-$1191.55

specifications flwheflepla:

• for models: Twin
• for makes: Bmw
• mpn: 21-20-5-a40-868
• part type: Flywheel
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• replaces part number: 21-20-8-655-638

shipping flwheflepla:

• service: FedEx Ground or FedEx Home Delivery
• class: Standard
• carrier: FedEx
• transit: 3-8 Days
• cost: $0.00
• type: Fixed

payments flwheflepla:

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

offer flwheflepla:

• quantity: 2
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: April 8, 2025

returns flwheflepla:

• paid by: Buyer
• policy: Returns Accepted
• time: 30 Days

general flwheflepla:

• Car Truck Parts Accessories > Transmission Drivetrain > Flywheels Flexplates
• condition: New

seller flwheflepla:

• # reviews: 114
• city: Huntington Station, New York
• rating: 97.6%

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