Transmission Assembly with Torque Converter for 2018-2021 Mazda CX-5
Product Notes Read before buying
This is for All-Wheel Drive (AWD) models with the 2.5L naturally aspirated (non-turbo) engine only. It will not fit FWD or turbocharged models. This part fits models both with and without cylinder deactivation.
Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
Vehicle Fitment Guide
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Grand Touring | SUV | 2018 - 2021 | L4 2.5L | AWD | Automatic |
| GS | SUV | 2018 - 2021 | L4 2.5L | AWD | Automatic |
| GT | SUV | 2018 - 2021 | L4 2.5L | AWD | Automatic |
| GX | SUV | 2018 - 2021 | L4 2.5L | AWD | Automatic |
| Sport | SUV | 2018 - 2021 | L4 2.5L | AWD | Automatic |
| Touring | SUV | 2018 - 2021 | L4 2.5L | AWD | Automatic |
| 2019 - 2020 |
Know This Transmission Before You Buy
The research behind our purchase interview — recalls, bulletins and real install economics for this transmission family:
A quick look at your own vehicle makes sure the right transmission shows up:
- Confirm AWD drivetrain by checking for a rear differential and rear axle shafts.
- Verify engine type is 2.5L naturally aspirated (VIN 8th digit L or M; engine cover does not say 'TURBO').
- Check transmission oil pan shape to match standard FW6AX-EL pan shape.
What the install really takes — plan and budget with confidence:
Special tools this job needs:
- Engine support bar
- Transmission jack
- CV axle popper/slide hammer
- OBD2 scan tool with Mazda-specific diagnostics
- Plastic non-marring scrapers
Budget for these consumables at install:
- Mazda Genuine ATF-FZ (Blue fluid)
- Internal transmission filter cartridge (strainer) and O-rings
- High-quality transmission-grade RTV sealant (e.g., Mazda Grey Silicone or Permatex Ultra Grey)
- Torque converter input shaft seal
- Axle seals
- Transfer case companion flange O-ring
- Transmission cooler line flush solvent
What your vehicle’s computers will need after the swap:
What’s involved: TCM Adaptive Relearn / Initial Learning Procedure
sources differ: Arm 1 states a manual 'Konami Code' in-vehicle procedure can bypass the scan tool requirement, while Arm 2 states a dealer-level scan tool is required for the official procedure. Choosing 'no' for dealer tool required as a manual workaround exists, but noted as model-dependent/recommended.
Pro tips for a smooth first start-up — hand them to whoever does the install:
- Torque Converter Seating: Must feel/hear three distinct clicks or drops. Failure to seat fully will crack the oil pump gear upon bolting to the engine.
- AWD Transfer Case (PTU) Alignment: Ensure splines are perfectly aligned and replace the input shaft seal and companion flange O-ring to prevent fluid mixing.
- ATF Level Check Procedure: No traditional dipstick. The dipstick is secured by an 8mm bolt low on the front of the case. Fluid level must be checked with engine running and fluid temperature between 122°F and 140°F (50°C-60°C).
- RTV Sealant Cure Time: Must allow RTV to cure for a full 24 hours before filling with fluid to prevent blowouts and leaks.
- Cooler and Line Flush: Mandatory to remove debris from the previous transmission failure to prevent immediate contamination and premature failure.
Easy to get right once you know them:
- Using the wrong fluid (using standard multi-vehicle ATF instead of Mazda ATF-FZ).
- Rushing the RTV cure time and filling the transmission immediately.
- Failing to perform the TCM adaptive relearn procedure, leading to harsh shift shock.
- Skipping the transmission cooler and line flush.
- Misdiagnosing shift issues that could be resolved with a software update or TSB instead of a full replacement.
Not issues with the units on this page — the manufacturer documented these for every transmission of this family, wherever you buy one. Handy for your installer:
🔎 Recommended at install: Reflash the TCM with updated software.
🔎 Recommended at install: Replace the torque converter and thoroughly flush the transmission and cooler lines.
🔎 Recommended at install: Replace the affected oil pressure switches and update the TCM calibration.
🔎 Recommended at install: Overhaul the transmission to replace the case half/bearing, or replace the transmission assembly.
🔎 Recommended at install: Reprogram the PCM/TCM.
🔎 Recommended at install: PCM software update from dealer to correct shift logic.
Researched from factory recalls, TSBs and OEM service data (reference unit 400-11064-5523627). Unit-specific details — mileage, condition, warranty, freight — are covered in the checkout interview.
Policies, in plain English.
Shipping & Handling
- Ships by LTL freight on a pallet — a real freight truck, not a parcel van
- Your checkout freight quote covers delivery to your door (liftgate service included for residential addresses)
- The carrier calls ahead to schedule a delivery window — someone must be present to receive it
- Typically palletized and picked up within 2–3 business days; transit time depends on distance
120-Day Warranty
This part includes a 120-day warranty.
- If the part fails within the warranty window, we'll replace it or refund per the coverage terms
- Coverage is parts-only — installation labor is not included
- Warranty covers defects — not installation errors, misuse, or damage after installation
Your pre-purchase interview reviews these exact terms with you before anything is charged.
Returns (30 Days)
We accept returns of uninstalled parts within 30 days of delivery for this part.
- Defective parts: We will replace the part or issue a refund at our discretion
- Programming: "Needs to be programmed to my vehicle" is not a valid return reason. Many modules require dealer programming — we're happy to help connect you with resources if your dealer says it's not programmable
- Return shipping: This part ships by freight (LTL) — the part price is refundable per the terms above, but shipping costs are non-refundable and return freight follows the seller's return terms. Your pre-purchase interview walks through the exact numbers before you buy
- Parts must be returned in original packaging and unmodified condition
- Poorly packaged returns that arrive damaged will not be credited
Damaged in Shipping?
Freight damage is rare — and you're fully protected when you do two things at delivery:
- Inspect before you sign — you're allowed time to look the pallet over while the driver waits
- Write any damage on the delivery receipt before signing — that one line is what makes a freight claim succeed
- Severe damage? Refuse the delivery — it goes back at no cost to you and we make it right
- Photograph the pallet before unwrapping; report concealed damage within 24 hours of delivery
We handle the carrier claim — you just help document it. Your pre-purchase interview walks through this checklist too.
Order Cancellation
Cancel before shipment for a full refund. Once the pallet has been built, a preparation charge may apply — and once the freight carrier picks it up, shipping costs are non-refundable and standard return terms apply. Your pre-purchase interview shows the exact numbers before you pay.
Expert Guides
2018-2021 Mazda CX-5 2.5L SkyActiv-Drive Transmission: Problems, Identification, and Used Replacement
Identify what kills the FW6AX-EL AWD transaxle, when to fix it, and how to successfully install a used OEM replacement unit.
Read Full Guide →Related Trouble Codes (OBD-II)
7 matching guidesIf your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
Miscellaneous Information
OEM Part Numbers:
Mazda: F1Y4-03-000R-V0, F1Y403000, FV8K03000
Other: TQ8-FOB-4F0
Fits Years: 2018 2019 2020 2021
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This unit ships with the selling yard's 120-day warranty. Longer plans can be requested during checkout.
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