23 Electrical parts are listed for the 1975 MG MGB, in 5 part types, covering both the 1.8L L4 and the 3.5L V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
The electrical system on the 1975 MG MGB covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. The largest groups are Horn (18 parts), Alternator / Generator End Bearing (2 parts) and Alternator / Generator (1 part). The other 2 part types cover the remaining 2 parts.
The 1975 MG MGB was sold with both the 1.8L L4 and the 3.5L V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
8 brands supply electrical parts for the 1975 MG MGB, led by FIAMM (12 parts), STANDARD MOTOR PRODUCTS (5 parts) and ÜRO PARTS (1 part), plus 5 more brands. Quality grades include Standard Replacement and Accessory Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1975 MG MGB. 4 parts have it, including FIAMM 7210223 (Horn) and FIAMM 7201223 (Horn). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Fits: 3.5L V8 | AL050 | 🇺🇸 US | 43 Amp | 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.
This group shows a single part: ÜRO PARTS AL050.
Alternator / Generator End Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: 3.5L V8 | 6202 | 🇺🇸 US | Front35 mm Outside Diameter | View on Amazon |
| SKF Fits: 3.5L V8 | 6202J | 🇺🇸 US | Drive End | 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.
2 Alternator / Generator End Bearing parts are listed for the 1975 MG MGB, from SCHAEFFLER and SKF.
This group includes SCHAEFFLER 6202 and SKF 6202J.
Horn
Accessory Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 3.5L V8 | 7210223 | 🇺🇸 US | Accessory HornFreeway Blaster | View on Amazon |
| FIAMM Fits: 3.5L V8 | 7211223 | 🇺🇸 US | Accessory Horn (Louder)FWY Blaster | View on Amazon |
| FIAMM Fits: 3.5L V8 | 7410024 | 🇺🇸 US 🇨🇦 CA | Accessory HornEl Grande | View on Amazon |
| FIAMM Fits: 3.5L V8 | 6602023 | 🇺🇸 US 🇨🇦 CA | Accessory HornRed | View on Amazon |
| FIAMM Fits: 3.5L V8 | 6602523 | 🇺🇸 US 🇨🇦 CA | Accessory HornChrome | View on Amazon |
| FIAMM Fits: 3.5L V8 | 6604523 | 🇺🇸 US 🇨🇦 CA | Ultimate Blast HornAccessory Horn | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: 3.5L V8 | 7201223 | 🇺🇸 US | OE Replacement Tone2 Terminal Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: 3.5L V8 | 7200223 | 🇺🇸 US | OE Replacement Tone2 Terminal Blade Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: 3.5L V8 | 7250522 | 🇺🇸 US | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| ACDELCO Fits: 3.5L V8 | E1905E | 🇺🇸 US 🇨🇦 CA | Gold2 Pin Connection | View on Amazon |
| FIAMM Fits: 3.5L V8 | 7421122 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Fits: 3.5L V8 | 7421322 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors | View on Amazon |
| FIAMM Fits: 3.5L V8 | 7250622 | 🇺🇸 US | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.5L V8 | HN15 | 🇺🇸 US | High ToneUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.5L V8 | HN16T | 🇺🇸 US | T-SeriesUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.5L V8 | HN17T | 🇺🇸 US | T-SeriesUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.5L V8 | HN18 | 🇺🇸 US | High Output Low Tone | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 3.5L V8 | HN16 | 🇺🇸 US | Low ToneUniversal | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
18 Horn parts are listed for the 1975 MG MGB, from FIAMM, STANDARD MOTOR PRODUCTS and ACDELCO. FIAMM 7210223 carries the "Popular" badge.
In the Accessory Replacement grade, FIAMM supplies 6 parts: grouped under the catalog's "Accessory Replacement" designation — the notes column spells out what sets them apart. A representative part number is FIAMM 7210223.
The Standard Replacement section lists 12 options from FIAMM, STANDARD MOTOR PRODUCTS and ACDELCO — built to original-equipment specification. FIAMM 7201223 is listed in this group.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Fits: 3.5L V8 | SR193X | 🇺🇸 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.
This group shows a single part: BOSCH SR193X.
Starter Solenoid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.5L V8 | 1M1045 | 🇺🇸 US | View on Amazon |
This table covers the Starter solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.
This group shows a single part: WELLS 1M1045.
Buying Electrical Parts for a 1975 MG MGB
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. Every electrical part here is 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: Horn and Alternator / Generator End Bearing .
Frequently Asked Questions
How many electrical parts fit the 1975 MG MGB?
Our catalog currently lists 23 electrical parts for the 1975 MG MGB across 5 subcategories and 8 brands, covering both the 1.8L L4 and the 3.5L V8. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 1975 MG MGB engines?
Yes. Every electrical part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 1975 MG MGB?
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 1975 MG MGB 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 1975 MG MGB?
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 1975 MG MGB
Electrical Parts for Other MG MGB Years
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