The 2021 MG HS has one listed fuel & air part: a Fuel Injection Pressure Regulator from WALKER PRODUCTS, covering both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. It includes a manufacturer part number and application notes.
On the 2021 MG HS, the fuel & air system meters fuel and air — pumps, injectors, filters, intake components and the sensors that balance the mixture.
The 2021 MG HS was sold with both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. The single part on this page fits every engine.
The part number opens a page with every vehicle that part fits.
Fuel Injection Pressure Regulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS Fits: all 2021 HS engines | 2551020 | 🇲🇽 MX | View on Amazon |
This table covers the regulators that hold fuel-rail pressure.
One part is listed for the 2021 MG HS — WALKER PRODUCTS 2551020.
Buying Fuel & Air Parts for a 2021 MG HS
On this vehicle, the fuel & air system meters fuel and air — pumps, injectors, filters, intake components and the sensors that balance the mixture.
- You do not need to pick an engine: every fuel & air part on this page fits both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged.
- 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 Injection Pressure Regulator .
Frequently Asked Questions
How many fuel & air parts fit the 2021 MG HS?
This page lists one fuel & air part for the 2021 MG HS: a Fuel Injection Pressure Regulator from WALKER PRODUCTS, covering both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged.
Do fuel & air parts differ between 2021 MG HS engines?
No. On this page every fuel & air part fits both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of fuel & air problems on a 2021 MG HS?
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 MG HS 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 MG HS?
Every part on this page already fits both the 1.5L L4 Turbocharged and the 2.0L L4 Turbocharged. 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 MG HS
Fuel & Air Parts for Other MG HS Years
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