The 1958 MG Mga has 21 electrical parts with verified fitment on this page — 5 part types and 12 brands, covering both the 1.5L L4 and the 1.6L L4. Each part includes a manufacturer part number and application notes.
On the 1958 MG Mga, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 16 parts of the 21 listed are Starter Motor (7 parts), Alternator / Generator (5 parts) and Alternator / Generator End Bearing (4 parts). The other 2 part types cover the remaining 5 parts.
The 1958 MG Mga was sold with both the 1.5L L4 and the 1.6L L4. 9 parts fit every engine; the other 12 are engine-specific. Each part shows which engine(s) it fits.
12 brands supply electrical parts for the 1958 MG Mga, led by PURE ENERGY (3 parts), STANDARD MOTOR PRODUCTS (3 parts) and WAI GLOBAL (2 parts), plus 9 more brands. Quality grades include Remanufactured, New and Standard Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1958 MG Mga. 3 parts have it, including WAI GLOBAL 15017N (Alternator / Generator) and PURE ENERGY 16121N (Starter Motor). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular Fits: 1.5L L4 | 15017N | 🇺🇸 US | Does Not Include Pulley | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 1.5L L4 | 15017 | 🇺🇸 US | RemanufacturedDoes Not Include Pulley | View on Amazon |
| PURE ENERGY Fits: 1.5L L4 | 15017 | 🇺🇸 US | RemanufacturedDoes Not Include Pulley | View on Amazon |
| REMY Fits: 1.5L L4 | 15017 | 🇺🇸 US | Premium RemanufacturedDoes Not Include Pulley | View on Amazon |
| TERREPOWER Fits: 1.5L L4 | 15017 | 🇺🇸 US | RemanufacturedDoes Not Include Pulley | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
5 Alternator / Generator parts for the 1958 MG Mga come from 5 brands — WAI GLOBAL, FVP, PURE ENERGY and 2 other brands. The "Popular" part is WAI GLOBAL 15017N.
The New section lists 1 option from WAI GLOBAL — brand-new units rather than rebuilt ones. WAI GLOBAL 15017N is listed in this group.
The Remanufactured section lists 4 options from FVP, PURE ENERGY, REMY and 1 other brand — factory-rebuilt units with new wear components. FVP 15017 is listed in this group.
This group includes WAI GLOBAL 15017N and FVP 15017 and the remaining parts above.
Alternator / Generator End Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1958 Mga engines | RB6202 | 🇺🇸 US | Open Designwith Lucas Alternator | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1958 Mga engines | NB202 | 🇺🇸 US | 22 Ampswith Lucas, C40 Alternator | View on Amazon |
| NATIONAL Fits: all 1958 Mga engines | 202 | 🇺🇸 US | Open Designwith Lucas Alternator | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Fits: all 1958 Mga engines | 0513860 | 🇺🇸 US | Bearing Only | View on Amazon |
This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
4 Alternator / Generator End Bearing parts are listed for the 1958 MG Mga, from WJB / INMOTION PARTS, BCA, NATIONAL and 1 other brand. All of them fit every engine offered in the 1958 Mga.
In the Economy grade, WJB / INMOTION PARTS supplies 1 part: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS RB6202.
The Standard Replacement section lists 2 options from BCA and NATIONAL — built to original-equipment specification. BCA NB202 is listed in this group.
1 ungrouped part is not assigned to a grade, with the same engine-level match.
Listed part numbers: WJB / INMOTION PARTS RB6202, BCA NB202 and NATIONAL 202, plus the other parts above.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: all 1958 Mga engines | 4BC16 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1958 Mga engines | 7154C | 🇺🇸 US | Federal Wire | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1958 Mga engines | B9 | 🇺🇸 US | NegativeBATTERY TO GROUND | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1958 Mga engines | A164 | 🇺🇸 US | 16 Length | View on Amazon |
This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.
4 Battery Cable parts for the 1958 MG Mga come from 2 brands — STANDARD MOTOR PRODUCTS and ACDELCO. Every part fits both the 1.5L L4 and the 1.6L L4.
This group includes ACDELCO 4BC16, STANDARD MOTOR PRODUCTS 7154C and STANDARD MOTOR PRODUCTS B9 and the remaining parts above.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular Fits: 1.5L L4 | 16121N | 🇺🇸 US | View on Amazon | |
| WAI GLOBAL Fits: 1.5L L4 | 16121N | 🇺🇸 US | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 1.5L L4 | 3361233 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| FVP Fits: 1.5L L4 | 16121 | 🇺🇸 US | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 1.5L L4 | 16121 | 🇺🇸 US | Remanufactured | View on Amazon |
| REMY Fits: 1.5L L4 | 16121 | 🇺🇸 US | Remanufactured | View on Amazon |
| TERREPOWER Fits: 1.5L L4 | 16121 | 🇺🇸 US | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
7 Starter Motor parts for the 1958 MG Mga come from 6 brands — PURE ENERGY, WAI GLOBAL, ACDELCO and 3 other brands. The "Popular" part is PURE ENERGY 16121N.
The New section: 2 options from PURE ENERGY and WAI GLOBAL. PURE ENERGY 16121N is listed in this group.
The Remanufactured section: 5 options from ACDELCO, FVP, PURE ENERGY and 2 other brands. ACDELCO 3361233 is listed in this group.
Part numbers include PURE ENERGY 16121N and ACDELCO 3361233, among others listed above.
Starter Solenoid Switch Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRO Fits: all 1958 Mga engines | RP1 | 🇺🇸 US 🇨🇦 CA | Sold IndividuallyReproduction | View on Amazon |
This table covers the Starter Solenoid Switch covers.
One part is listed for the 1958 MG Mga — METRO RP1.
Buying Electrical Parts for a 1958 MG Mga
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Some electrical parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Starter Motor and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 1958 MG Mga?
Our catalog currently lists 21 electrical parts for the 1958 MG Mga across 5 subcategories and 12 brands, covering both the 1.5L L4 and the 1.6L L4. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 1958 MG Mga engines?
Some do. 9 parts fit every engine; the other 12 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical problems on a 1958 MG Mga?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 1958 MG Mga 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 1958 MG Mga?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1958 MG Mga
Electrical Parts for Other MG Mga 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.