BMW Drivetrain Parts for BMW 4 Series G22 (2021+)

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Building your perfect BMW is more than just adding horsepower and stiff suspension. Your drivetrain needs attention in order to deliver power effectively. Most BMWs feature comfortable clutch discs, heavy flywheels, long shifter throws, and open differentials. The drivetrain transmits power to the wheels, but can also be a source of power loss when it is designed for comfort rather than performance. Everything on this page will help you improve your power delivery and driving experience by providing custom Limited Slip Differentials, Short Shift Conversions, Performance Clutch Discs, Lightweight Flywheels, and anything else your BMW needs to be the perfect driving experience.

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Automatic Transmission Service Kit - With Aluminum Oil Pan
For Pre-LCI models only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:53644251
Part#: URO011913KT
Ships in 1 Business Day
New Item
Sale - Save 1% $ 252.99

This product was last offered at the strikethrough price on
05-30-2026

$ 249.51 USD
Free Shipping on orders $49 and up
Sale - Save 1%
$ 252.99

This product was last offered at the strikethrough price on
05-30-2026

$ 249.51 USD
Free Shipping on orders $49 and up
Over the life of a vehicle, the transmission can often be overlooked when performing routine maintenance. If left unserviced, the automatic transmission fluid will break down, causing the valve body and filter to become contaminated with deposits and sludge. This will lead to poor shifting, slipping, and ultimately, transmission failure.
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BMS Differential Support Bracket Brace For G Chassis BMW/Supra ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:49822560
Part#: BMSDSBBG
In Stock
New Item
$ 229,229.00

This product was last offered at the strikethrough price on
01-21-2026

$ 229.00 USD
Free Shipping on orders $49 and up
$ 229.00 USD
Free Shipping on orders $49 and up
For G-Chassis BMW & A90/A91 Toyota Supra High torque loads, hard launches, and aggressive driving expose the factory differential mounting’s built-in compliance. Under power, the differential can shift excessively, resulting in wheel hop, inconsistent traction, and increased stress on drivetrain components—issues that become more pronounced on tuned or track-driven cars. The BMS Differential Support Bracket Brace corrects this weakness by reinforcing the differential mounting point and securely tying it to the subframe. By controlling unwanted movement, the brace improves rear-end stability and ensures power is transferred to the ground more efficiently. Why Upgrade? OEM differential mounts favor NVH reduction over control. As torque output increases, that compliance translates into drivetrain shock and lost traction. This brace stiffens the system where it matters most, reducing flex and improving load management under acceleration. Performance Benefits Improved launch consistency Significant reduction in wheel hop Increased rear-end stability under load More precise and predictable power delivery Engineered for Demanding Use Designed around factory mounting points, the BMS Differential Support Bracket delivers precise OE-level fitment with increased structural rigidity. Its robust construction resists deflection under high torque, while upgraded hardware provides greater clamping force for long-term reliability. Fully bolt-on for straightforward installation on both stock and modified vehicles. Key Features Reinforces rear differential mounting Limits differential movement under load Enhances traction and drivetrain response Heavy-duty construction for high-performance applications Bolt-on installation using factory locations Compatible with G-chassis BMW and A90/A91 Supra A focused drivetrain upgrade for drivers who demand consistency, control, and durability at higher performance levels.
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CENTERING SLEEVE HARD
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:50817520
Part#: 26118835422
Ships in 4 Business Days
New Item
5% off MSRP $ 36.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 34.99 USD
Free Shipping on orders $49 and up
5% off MSRP
$ 36.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 34.99 USD
Free Shipping on orders $49 and up

Genuine BMW Universal Flex Disc
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:48367039
Part#: 26119895600
Back Ordered
New Item
7% off MSRP $ 225.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 209.99 USD
Free Shipping on orders $49 and up
7% off MSRP
$ 225.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 209.99 USD
Free Shipping on orders $49 and up
This replacement flex disc (aka: the guibo) is a vibration dampener mounted on the back of the transmission which connects to the driveshaft. When it has worn, it produces a terrible vibration throughout the car. It's especially noticeable at low speeds and when starting from a standstill. Oil leaking from the back of the transmission will significantly reduce its life.
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Shifter Repair Kit - Each
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:55245795
Part#: 2511143XKT
In Stock
New Item
$ 13.04 USD
Free Shipping on orders $49 and up
Tighten up your track day or spirited street shifts with this Genuine BMW Selector Rod refresh kit.
Automatic Transmission Service Kit - GA8HP51X / GA8HP51Z - BMW G2X G3...
For Pre-LCI vehicles with the B58TU (B58D/B58C) engine w/ GA8HP51X or GA8HP51Z transmis...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:53361559
Part#: 24118743462KT3
In Stock at Vendor
New Item
$ 265.70

This product was last offered at the strikethrough price on
05-08-2026

$ 263.24 USD
Free Shipping on orders $49 and up
$ 263.24 USD
Free Shipping on orders $49 and up
Don't let your BMW's performance degrade due to neglected maintenance. Over time, automatic transmission fluid breaks down, leading to a buildup of sludge and deposits that can clog the valve body and contaminate the filter. This results in sluggish shifting, gear slipping, and eventually, catastrophic transmission failure. Protect your investment with this comprehensive Automatic Transmission Service Kit, designed to restore smooth operation and factory-fresh shift quality.
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CSF Universal Large Single-Pass Oil Cooler - Universal Application ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Universal fitment design - modifications may be necessary to run this cooler
CSF - Corporate Logo
T#:53608839
Part#: 8371
Ships in 3 Business Days
New Item
$ 499.00 USD
Free Shipping
$ 499.00 USD
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CSF redesigned this cooler and went with a more traditional inlet/outlet orientation. The new single pass design features high efficiency and high durability, but with vertically oriented inlet and outlet connections.
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Pure Drivetrain ATC 13-1 Transfer Case Kit - AWD High Performance Har...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Pure Drivetrain Solutions - Corporate Logo
T#:54566515
Part#: PDS13-0131-1000
In Stock at Vendor
New Item
$ 1,799.99 USD
$ 1,799.99 USD
Don't let your transfer case limit your build's potential. Upgrade to Pure Drivetrain Solutions and lock down your drivetrain integrity.

Pure Drivetrain 8HP51 High Performance Transmission Hard Parts Kit - ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Pure Drivetrain Solutions - Corporate Logo
T#:50136699
Part#: 12-94-2000
In Stock at Vendor
New Item
$ 4,999.99 USD
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We all love the ZF 8HP for its lightning-fast shifts, but as many BMW owners discover, it’s not invincible. If you’ve pushed your build past the factory power limits, you’re likely feeling the dreaded "trans slip." Before you spend five figures on a replacement, check out the Hard Parts Kit from Pure Drivetrain Solutions. This kit targets the specific failure points of the 8HP, reinforcing the transmission from the inside out.
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Genuine BMW - 8HP Automatic Transmission Service Kit - GA8HP51X / GA8...
For Pre-LCI vehicles with the B58TU (B58D/B58C) engine w/ GA8HP51X or GA8HP51Z transmis...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW - Corporate Logo
T#:53361556
Part#: 24118743462KT
Ships in 1-2 days
New Item
$ 1,121.99

This product was last offered at the strikethrough price on
05-06-2026

$ 1,041.99 USD
Free Shipping on orders $49 and up
$ 1,041.99 USD
Free Shipping on orders $49 and up
Don't let your BMW's performance degrade due to neglected maintenance. Over time, automatic transmission fluid breaks down, leading to a buildup of sludge and deposits that can clog the valve body and contaminate the filter. This results in sluggish shifting, gear slipping, and eventually, catastrophic transmission failure. Protect your investment with this comprehensive Automatic Transmission Service Kit, designed to restore smooth operation and factory-fresh shift quality.
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Heavy Duty Aluminum Transmission Pan With Oil Pan Gasket
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Packaged by Turner - Corporate Logo
T#:55353626
Part#: 228053420KT2
Ships in 3 Business Days
New Item
$ 354.99 USD
Free Shipping on orders $49 and up
$ 354.99 USD
Free Shipping on orders $49 and up
Over time, those OEM plastic units do what they do best—warp, leak, and trap heat right where you don't want it.
Meyle Automatic Transmission Fluid Plus 9 - 1 Liter
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Meyle - Corporate Logo
T#:55569543
Part#: 0140193200
Special Order: No Guaranteed ETA
New Item
$ 24.00 USD
$ 24.00 USD
Don't let fluid breakdown slow down your shifts or trigger performance-robbing transmission slip when you're pushing your car to the limit. This Meyle ATF Plus 9 high-performance transmission fluid is engineered to withstand the extreme thermal loads and intense shear stress generated during aggressive street driving and high-RPM track sessions. Its advanced synthetic formula provides a robust lubricating film that limits friction within the gearsets and maintains crisp clutch engagement, ensuring your multi-speed automatic handles rapid downshifts and hard acceleration flawlessly.
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OEM ZF Automatic Transmission Service Kit - GA8HP51X / GA8HP51Z - BMW...
For Pre-LCI vehicles with the B58TU (B58D/B58C) engine w/ GA8HP51X or GA8HP51Z transmis...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ZF - Corporate Logo
T#:53361557
Part#: 24118743462KT2
Back Ordered
New Item
$ 415.52 USD
Free Shipping on orders $49 and up
$ 415.52 USD
Free Shipping on orders $49 and up
Don't let your BMW's performance degrade due to neglected maintenance. Over time, automatic transmission fluid breaks down, leading to a buildup of sludge and deposits that can clog the valve body and contaminate the filter. This results in sluggish shifting, gear slipping, and eventually, catastrophic transmission failure. Protect your investment with this comprehensive Automatic Transmission Service Kit, designed to restore smooth operation and factory-fresh shift quality.
Show More Show Less