2021 Mazda 3 transmission control module — Power Supply, D42A-675Z0 price snapshot
- Low
- $111
- Average
- $140
- High
- $207
Year & trim-specific price guide
Used 2021 Mazda 3 Transmission Control Module — Power Supply, D42A-675Z0 prices
Trim-specific pricing for the Power Supply, D42A-675Z0 variant of the 2021 Mazda 3 transmission control module, built from 6 real salvage yard listings with condition grade detail.
Price summary
A used 2021 Mazda 3 transmission control module (Power Supply, D42A-675Z0) costs $111 to $207, with a median asking price of $125. Based on 6 priced salvage yard listings across the US, updated Sep 5, 2026. Prices exclude shipping, core charges, and installation.
Grade A (excellent)$145
Grade B (good)$125
USD
Condition comparison
Price by part grade
Grade AClean / low wear$111–$1452 listings
Grade BStandard used$125–$2074 listings
Grade CVisible wearUpdating
Grade XUngradedUpdating
| Grade | Price range | Relative range | Listings |
|---|---|---|---|
| Grade AClean / low wear | $111–$145 | 2 | |
| Grade BStandard used | $125–$207 | 4 | |
| Grade CVisible wear | Updating | — | |
| Grade XUngraded | Updating | — |
Median by grade
Grade price comparison
Grade A$145
Grade B$125
Median asking price by seller-reported condition grade · $111–$207 overall range
Trim-specific context
How does the Power Supply, D42A-675Z0 compare?
This pricing covers the Power Supply, D42A-675Z0 variant of the 2021 Mazda 3 transmission control module, based on 6 priced listings. Its $125 median is 30% above the 2021 Mazda 3 transmission control module overall median of $96.
There are 8 other transmission control module variants available for the 2021 Mazda 3.
Pricing is not a fitment guarantee. Match the VIN, part number, engine or drivetrain, and seller-listed variant before ordering.
Same year, other trims
What other 2021 Mazda 3 transmission control module variants are available?
Theft-Locking, (keyless entry), (LH door)
44 listings$101$65 – $198Communication, (bluetooth connectivity), (center dash mounted)
41 listings$81$71 – $299Multifunction, satellite radio
38 listings$98$71 – $354Multifunction, w/o satellite radio
34 listings$100$45 – $195Body Control (BCM), (behind LH kick panel)
24 listings$56$25 – $335Fuel Pump, (tank mounted)
24 listings$46$41 – $262Air Bag, (LH under dash), (roof air bag equipped)
22 listings$76$41 – $344Power Supply, D41S-675Z0
9 listings$88$65 – $282Back to full guide
2021 Mazda 3 transmission control module — all trims
Common questions
2021 Mazda 3 transmission control module (Power Supply, D42A-675Z0) FAQ
How much is a used 2021 Mazda 3 transmission control module (Power Supply, D42A-675Z0)?
Based on 6 priced salvage-yard listings, a used 2021 Mazda 3 transmission control module in the Power Supply, D42A-675Z0 variant lists between $111 and $207, with a median asking price of $125.
Which years use the Power Supply, D42A-675Z0 transmission control module?
In our current dataset, the Power Supply, D42A-675Z0 variant appears only for the 2021 model year.