2018 Used BMW Transmissions For Sale

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verified 2018 BMW transmissions
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2018 Used BMW Transmissions For Sale

91 verified used 2018 BMW transmissions in stock — the longitudinal ZF 8HP Steptronic in xDrive form (X3 through X6, 230i to M240i, 320i to 340i, 430i/440i, 530i to M550i, 640i/650i, 740i to M760i, Alpina B6) and rear-drive form (230i to 750Li RWD, X5 and X6 sDrive35i), the transverse Aisin GA8F22AW 8-speed on the F48 X1 and F39 X2 in FWD and xDrive, the 7-speed M dual-clutch behind the M2, M3 and M4, the 8HP75 M unit in the F90 M5, X5 M and X6 M, and the 330e, 530e and 740e plug-in hybrid case. On BMW, drive type decides fitment more than displacement does, so xDrive, rear-drive and FWD cases are listed separately. Every unit is VIN-matched, ASE Shift-Tested through every gear under load, photographed before shipment, and backed by a 6-month warranty with extended coverage up to 3 years. Free freight, 30-day money-back.

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Warranty On Every Unit
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Photos Before Shipment
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ASE-Tested & Verified
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Free Nationwide Shipping
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30-Day Money-Back
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2018 BMW Transmission Families

Which gearbox sits behind which 2018 BMW, and how many of each we hold today.

Transmission family Fits (2018) In stock
ZF 8HP Steptronic — xDrive case X3 xDrive30i/M40i, X4, X5, X6; 230i/M240i, 320i, 328d, 330i GT, 340i, 430i, 440i xDrive; 530i, 540i, M550i; 640i/650i incl. Gran Coupe and Gran Turismo; 740i, 750i, 750Li, M760i; Alpina B6 55
ZF 8HP Steptronic — rear-drive case 230i, 320i, 328d, 328i diesel, 330i, 340i, 430i, 440i, 530i, 540i RWD; 640i, 650i, 740i, 750i, 750Li RWD; X5 sDrive35i, X6 sDrive35i 20
GA8P75HZ plug-in hybrid 8-speed 330e, 530e, 740e — motor integrated in the bellhousing; 4 xDrive and 2 rear-drive in stock 6
ZF 8HP75 M F90 M5 (from 02/2018), X5 M, X6 M — M valve body and cooling, all M xDrive 3
7-speed M DCT (GS7D36SG) M2, M3, M4 — dual-clutch, rear-drive, no torque converter 3
Aisin GA8F22AW transverse — xDrive F48 X1 xDrive28i, F39 X2 xDrive28i 2
Aisin GA8F22AW transverse — FWD F48 X1 sDrive28i, F39 X2 sDrive28i 2
Total 91

Other BMW Model Years

Every model year we hold BMW transmissions for. Years without a link are in stock but have no year page yet — text us your VIN.

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Why Buy a 2018 BMW Transmission from Auto Power Source

Model year 2018 spans four distinct gearbox architectures, and on every one of them the split is drive type and architecture rather than displacement. The longitudinal ZF 8HP Steptronic behind the B46, B48, B58, N20, N55 and N63 engines comes in an xDrive case (X3 through X6, 230i to M240i, 320i to 340i, 430i/440i, 530i to M550i, 640i/650i, 740i to M760i and the Alpina B6) and a rear-drive case (the same 2-, 3-, 4-, 5-, 6- and 7-Series cars in RWD, plus X5 and X6 sDrive35i); the xDrive housing carries the transfer-case mounting and a different output arrangement, so an xDrive unit will not go into a rear-drive car and the reverse is equally true. The F48 X1 and F39 X2 are a different machine altogether — a transverse Aisin GA8F22AW 8-speed that shares nothing with the 8HP family and is itself split into FWD and xDrive variants. Three groups sit outside both: the M2, M3 and M4 dual-clutch, the 8HP75 M in the F90 M5, X5 M and X6 M, and the 330e/530e/740e hybrid case. Matching on your VIN settles architecture, case and drive type in one step before anything is picked.

Every 2018 BMW transmission we hold was pulled from a low-mileage donor vehicle, cataloged by VIN, and stored in our climate-controlled warehouse. Each went through our six-step inspection: VIN-matching, ASE Shift-Testing through every gear under load, noise verification, full visual inspection, multi-angle photography, and palletized shipping. On the ZF 8HP units the Mechatronic sleeve and valve body get a dedicated look — the usual failure point on the 8-speed family, and anything showing wear is rejected before it is listed. On the Aisin units we check clutch-pack engagement and the xDrive coupling; on the M dual-clutch the clutch packs and hydraulic actuator; on the 330e, 530e and 740e the integrated motor housing and seals.

2018 is a split year on several lines — the F30 3-Series and F32 4-Series were in their last full season, the F90 M5 arrived mid-year (the listings say from 02/2018), the G30 5-Series was new, and the F85 X5 M and F86 X6 M were winding down — which is exactly why the case and drive type have to be settled from the VIN rather than the model name. It is also where dealer-new pricing bites hardest: the 8HP75 M, the M dual-clutch and the 740e hybrid case are among the most expensive transmissions BMW sells new, and the M units are rarely discounted. You pay a fraction of dealer new for identical BMW engineering, ship free on a heavy-duty pallet anywhere in the continental U.S., and have 30 days from delivery to send it back for a full refund.

📱 Fastest way to match: text us your VIN, get options in minutes.Text Your VIN →

Your 2018 BMW Transmission Options: Compared

Most 2018 BMW owners face four real choices when the transmission fails:

← Swipe sideways to see all columns →
Option Cost Reliability Warranty Fitment Match
Used OEM (this collection) $$$ Best Value High — tested Included VIN-matched
New OEM (dealer) $$$$$ 2-4× more High Manufacturer Exact
Aftermarket / Reman $$$$ Varies 6-12 mo May adapt
Junkyard $ Cheapest Unknown None DIY

Tested used OEM hits the sweet spot — same engineering as new, fraction of the cost.

2018 BMW Transmission Buying Guide

5 things to verify before buying a used 2018 BMW transmission:

  1. Settle xDrive versus rear-drive versus FWD first. On 2018 BMWs this is the decision that matters most, and it matters on both architectures. The ZF 8HP comes in an xDrive case (X3 through X6, 330i/440i/540i xDrive, 740i, 750Li) and a rear-drive case (230i to M240i, 330i, 440i, 530i, 640i, 750Li RWD, X5 and X6 sDrive35i) with different housings and output arrangements. The transverse Aisin unit on the X1 and X2 likewise splits into FWD and xDrive. None of these swap. Tell us your exact drive type when you order, and on an xDrive car verify the transfer case too — a mismatched one causes driveline binding.
  2. Know whether your car is longitudinal 8HP or transverse Aisin. A 2018 X1 or X2 is a front-drive-based platform (F48 and F39) with a transverse Aisin GA8F22AW 8-speed. The 2-, 3-, 4-, 5-, 6- and 7-Series, X3, X4, X5 and X6 use the longitudinal ZF 8HP. Nothing crosses between the two families — not the case, not the mounts, not the control unit. Confirm which one your car carries before you shortlist anything.
  3. The M2, M3, M4, M5, X5 M and X6 M are their own parts, not tuned 8HPs. The 2018 M2, M3 and M4 use the 7-speed GS7D36SG dual-clutch, a fundamentally different unit from any torque-converter automatic in the range. The F90 M5, X5 M and X6 M use the ZF 8HP75 with M-specific valve body and cooling, not interchangeable with an xDrive50i 8HP. If your car is an M car, say so up front — an xDrive35i, xDrive50i or M40i unit will not substitute in either direction.
  4. Treat the 330e, 530e and 740e as their own parts, and on any ZF 8HP ask about the Mechatronic sleeve. The 2018 330e, 530e, 530e xDrive and 740e xDrive use the GA8P75HZ hybrid transmission with the electric motor integrated into the bellhousing; a conventional 330i, 530i or 740i unit will not substitute in either direction. Separately, the Mechatronic unit is the most common failure point on BMW's 8-speed family, and a unit that looks clean externally can still have a worn sleeve. Our inspection checks sleeve and valve body explicitly and rejects any unit showing wear before it is listed.
  5. Confirm the match with your own VIN before you order. Your VIN settles the transmission architecture, the case, the drive type and the build split in one step — which matters on 2018 in particular, where the M5 changes at 02/2018 and the 5-Series spans F10 and G30. Text it to +1-307-441-5554 and we will confirm in writing exactly which unit fits your vehicle before you pay.

Our ASE-certified technicians verify every one of these points against your VIN before any unit ships.

📞 Need help choosing the right 2018 BMW transmission? Talk to our team live.Call 1-877-313-8995

Frequently Asked Questions

What is the warranty on a used 2018 BMW transmission?
Every 2018 BMW transmission ships with a 6-month warranty included, printed on each product page. Extended coverage of up to 3 years is available at checkout.
What does ASE-tested mean on a transmission?
ASE-certified technicians Shift-Test every gear under load and check for clean engagement, no slipping and no abnormal noise. On ZF 8HP units the Mechatronic sleeve and valve body are inspected; on the Aisin units the clutch packs and xDrive coupling; on the M2, M3 and M4 dual-clutch the clutch packs and hydraulic actuator. Plus full visual inspection and multi-angle photography before shipment.
Will a 330i transmission fit my 2018 X5?
Only if the drive type matches, and often not even then. A 330i xDrive uses the xDrive ZF 8HP case and a rear-drive 330i the rear-drive case, with a different housing and output arrangement, and the F15 X5 xDrive50i runs its own calibration. Send your VIN and we will match the case.
Is the 2018 X1 or X2 transmission the same as the other models?
No. The 2018 X1 (F48) and X2 (F39) use a transverse Aisin GA8F22AW 8-speed automatic on a front-drive-based platform. It shares nothing with the longitudinal ZF 8HP used in the rest of the range, and it is itself split into FWD and xDrive variants.
Do you stock the 2018 M2, M3, M4, M5, X5 M and X6 M transmissions?
Yes — the M2, M3 and M4 unit is the 7-speed GS7D36SG dual-clutch, and the F90 M5, X5 M and X6 M use the ZF 8HP75 with M-specific valve body and cooling. Both are listed separately and neither interchanges with an xDrive35i, xDrive50i or M40i.
Why does the M5 listing say from 02/2018?
The F90 M5 went on sale partway through the model year, so a 2018 M5 built before that split is the previous F10 car with a different gearbox. The build date is part of the fitment, and your VIN settles which side of the split your car falls on.
Do I need my VIN?
Yes — essential. 2018 BMW transmissions split by architecture (longitudinal ZF 8HP, transverse Aisin, the M dual-clutch, the 8HP75 M and the hybrid case) and by drive type (xDrive, rear-drive, FWD), and 2018 straddles two generations on the 5-Series and the M5. Your VIN is how we pick the right unit.
When can I reach customer service?
Call 1-877-313-8995 or text +1-307-441-5554 during the business hours shown in the site footer, or email info@autopowersource.com any time.
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100K+
Engines+Transmissions In Stock
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Our 6-Step Inspection & Shipping Process

Every 2018 BMW transmission we ship has been through these six steps:

1. VIN-Matching
We match the donor VIN to your VIN to confirm transmission code, drivetrain, and RWD/xDrive configuration.
2. Tested & Verified
ASE-certified technicians Shift-Test every gear under load. Units are checked for clean engagement, no slipping, no abnormal noises.
3. Noise & Smoke Verification
Units are run to verify normal mechanical sound and clean operation — catches internal wear static tests miss.
4. Visual Inspection
Every accessible component is inspected: bell housing, output shaft, Mechatronic sleeve, cooler lines, sensor harnesses.
5. Photograph & Catalog
Multi-angle photos sent to you BEFORE we ship for your approval.
6. Palletize & Ship
Strapped on a heavy-duty wooden pallet, shipped via freight at no charge.

Our Photos-Before-Shipment Guarantee

Before any transmission leaves our warehouse, we send you multi-angle photographs. You approve. If you do not approve, you get every dollar back — no questions, no restocking fees, no return freight charges. On top of 30-day money-back and the warranty included with every unit. Browse all 91 2018 BMW transmissions below.

✉ Email Us at info@autopowersource.com
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