This page lists 3 fuel & air parts for the 2021 Mazda 2, across 2 part types, covering the 1.5L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Mazda 2, the fuel & air system meters fuel and air — pumps, injectors, filters, intake components and the sensors that balance the mixture. All 3 listed parts are Fuel Tank Cap (2 parts) and Air Filter (1 part).
Every part on this page is matched to the 1.5L L4 — the only engine offered in the 2021 Mazda 2.
The most listed brands for 2021 Mazda 2 fuel & air parts are MOTORAD (2 parts) and VARIOUS MFR (1 part). Quality grades include Locking Replacement and Standard Replacement.
Each part number listed for the 2021 Mazda 2 opens a page with every vehicle that part fits.
Air Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PA99171 | 🇲🇽 MX | View on Amazon |
This table covers the engine air filters in the intake box. Typical signs include hesitation, a dirty film in the air box, or a filter so packed it collapses. Seat the new filter in the box so unfiltered air cannot bypass the seal.
This group shows a single part: VARIOUS MFR PA99171.
Fuel Tank Cap
Locking Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | MGC7854T | 🇲🇽 MX | Locking Tethered | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | MGC4854T | 🇲🇽 MX | Tethered | View on Amazon |
This table covers the caps that seal the fuel filler neck. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable.
2 Fuel Tank Cap parts for the 2021 Mazda 2 come from MOTORAD.
In the Locking Replacement grade, MOTORAD supplies 1 part: grouped under the catalog's "Locking Replacement" designation — the notes column spells out what sets them apart. A representative part number is MOTORAD MGC7854T.
In the Standard Replacement grade, MOTORAD supplies 1 part: built to original-equipment specification. A representative part number is MOTORAD MGC4854T.
This group includes MOTORAD MGC7854T and MOTORAD MGC4854T.
Buying Fuel & Air Parts for a 2021 Mazda 2
On this vehicle, the fuel & air system meters fuel and air — pumps, injectors, filters, intake components and the sensors that balance the mixture.
- Confirm you have the 1.5L L4 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, check the air filter with any intake or injector work — a clogged filter skews every mixture reading downstream.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Fuel Tank Cap and Air Filter .
Frequently Asked Questions
How many fuel & air parts fit the 2021 Mazda 2?
Our catalog currently lists 3 fuel & air parts for the 2021 Mazda 2 across 2 subcategories and 2 brands, covering the 1.5L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of fuel & air problems on a 2021 Mazda 2?
Common symptoms include long cranking before start, hesitation under acceleration, worsening fuel economy, or a whining fuel pump. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, check the air filter with any intake or injector work — a clogged filter skews every mixture reading downstream.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Mazda 2 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Mazda 2?
Every part on this page is matched to the 1.5L L4 engine. Then replace the fuel filter when doing a pump, and never run a new pump on a near-empty rusty tank — debris is what killed the old one. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Mazda 2
Fuel & Air Parts for Other Mazda 2 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.