The 1973 MG MGB has 48 electrical parts with verified fitment on this page — 7 part types and 15 brands, covering both the 1.8L L4 and the 3.5L V8. Each part includes a manufacturer part number and application notes.
The electrical system on the 1973 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 (19 parts), Battery Cable (12 parts) and Alternator / Generator (6 parts). The other 4 part types cover the remaining 11 parts.
The 1973 MG MGB was sold with both the 1.8L L4 and the 3.5L V8. 21 parts fit every engine; the other 27 are engine-specific. Each part shows which engine(s) it fits.
15 brands supply electrical parts for the 1973 MG MGB, led by FIAMM (13 parts), STANDARD MOTOR PRODUCTS (11 parts) and DEKA (6 parts), plus 12 more brands. Quality grades include Standard Replacement, Remanufactured and Accessory Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1973 MG MGB. 10 parts have it, including ÜRO PARTS AL029 (Alternator / Generator) and DEKA 00802 (Battery Cable). Each part number opens a page with every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Popular Fits: 1.8L L4 | AL029 | 🇺🇸 US 🇨🇦 CA | 43 AmpIncludes Pulley | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 1.8L L4 | 14029 | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
| PURE ENERGY Fits: 1.8L L4 | 14029 | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
| REMY Fits: 1.8L L4 | 14013 | 🇺🇸 US 🇨🇦 CA | Premium RemanufacturedDoes Not Include Pulley | View on Amazon |
| TERREPOWER Fits: 1.8L L4 | 14029 | 🇺🇸 US 🇨🇦 CA | RemanufacturedDoes Not Include Pulley | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ÜRO PARTS Fits: 3.5L V8 | AL029 | 🇺🇸 US | 43 AmpIncludes 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.
6 Alternator / Generator parts for the 1973 MG MGB come from 5 brands — ÜRO PARTS, FVP, PURE ENERGY and 2 other brands. The "Popular" part is ÜRO PARTS AL029.
The New section lists 1 option from ÜRO PARTS — brand-new units rather than rebuilt ones. ÜRO PARTS AL029 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 14029 is listed in this group.
1 further part sits outside the graded sections, with the same engine-level match.
This group includes ÜRO PARTS AL029 and FVP 14029 and the remaining parts above.
Alternator / Generator End Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: all 1973 MGB engines | 6202 | 🇺🇸 US 🇨🇦 CA | Fits Front35 mm Outside Diameter | View on Amazon |
| SKF Fits: all 1973 MGB engines | 6202J | 🇺🇸 US 🇨🇦 CA | 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 1973 MG MGB, from SCHAEFFLER and SKF. All of them fit every engine offered in the 1973 MGB.
This group includes SCHAEFFLER 6202 and SKF 6202J.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 1.8L L4 | 00802 | 🇺🇸 US 🇨🇦 CA | Black4 Gauge | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 1.8L L4 | A224 | 🇺🇸 US 🇨🇦 CA | Length: 22 | View on Amazon |
| STANDARD MOTOR PRODUCTS Popular Fits: 1.8L L4 | B14 | 🇺🇸 US 🇨🇦 CA | NegativeBATTERY TO GROUND | View on Amazon |
| DEKA Fits: 1.8L L4 | 00801 | 🇺🇸 US 🇨🇦 CA | Black4 Gauge | View on Amazon |
| DEKA Fits: 1.8L L4 | 00295 | 🇺🇸 US 🇨🇦 CA | Red4 Gauge | View on Amazon |
| DEKA Fits: 1.8L L4 | 00296 | 🇺🇸 US 🇨🇦 CA | Red4 Gauge | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 | 7244SC | 🇺🇸 US 🇨🇦 CA | Length: 24"Federal Wire | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 | A194L | 🇺🇸 US 🇨🇦 CA | NegativeEngine Ground To Frame | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 | A244L | 🇺🇸 US 🇨🇦 CA | 24" Length | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 1.8L L4 | 7254C | 🇺🇸 US 🇨🇦 CA | Federal Wire | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 1.8L L4 | 4424 | 🇺🇸 US 🇨🇦 CA | 4-GaugeSwitch To Starter | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 1.8L L4 | 4219N | 🇺🇸 US 🇨🇦 CA | 19" Length4-Gauge | 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.
12 Battery Cable parts for the 1973 MG MGB come from 3 brands — STANDARD MOTOR PRODUCTS, DEKA and UNITED MOTOR PRODUCTS. The "Popular" part is DEKA 00802.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Fits: 1.8L L4 | 00350 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal | View on Amazon |
| DEKA Fits: 1.8L L4 | 01056 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal Lead Free | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
DEKA supplies both parts for the 1973 MG MGB.
This group includes DEKA 00350 and DEKA 01056.
Horn
Accessory Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: all 1973 MGB engines | 7210223 | 🇺🇸 US 🇨🇦 CA | Accessory HornFreeway Blaster | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 7211223 | 🇺🇸 US 🇨🇦 CA | Accessory Horn (Louder)FWY Blaster | View on Amazon |
| FIAMM Fits: 1.8L L4 | 72112 | 🇺🇸 US 🇨🇦 CA | Freeway BlasterAccessory Horn | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 7410024 | 🇺🇸 US 🇨🇦 CA | Accessory HornEl Grande | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 6602023 | 🇺🇸 US 🇨🇦 CA | Accessory HornRed | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 6602523 | 🇺🇸 US 🇨🇦 CA | Accessory HornChrome | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 6604523 | 🇺🇸 US 🇨🇦 CA | Ultimate Blast HornAccessory Horn | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FIAMM Popular Fits: all 1973 MGB engines | 7201223 | 🇺🇸 US 🇨🇦 CA | OE Replacement Tone2 Terminal Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: all 1973 MGB engines | 7200223 | 🇺🇸 US 🇨🇦 CA | OE Replacement Tone2 Terminal Blade Connection (Cut off and reuse OE Connector) | View on Amazon |
| FIAMM Popular Fits: all 1973 MGB engines | 7250522 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| ACDELCO Fits: all 1973 MGB engines | E1905E | 🇺🇸 US 🇨🇦 CA | Gold2 Pin Connection | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 7421122 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 7421322 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors | View on Amazon |
| FIAMM Fits: all 1973 MGB engines | 7250622 | 🇺🇸 US 🇨🇦 CA | OE Replacement Horn KitIncludes OE Connectors & L Bracket | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1973 MGB engines | HN15 | 🇺🇸 US 🇨🇦 CA | High ToneUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1973 MGB engines | HN16T | 🇺🇸 US 🇨🇦 CA | T-SeriesUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1973 MGB engines | HN17T | 🇺🇸 US 🇨🇦 CA | T-SeriesUniversal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1973 MGB engines | HN18 | 🇺🇸 US 🇨🇦 CA | High Output Low Tone | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: all 1973 MGB engines | HN16 | 🇺🇸 US 🇨🇦 CA | Low ToneUniversal | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
19 Horn parts are listed for the 1973 MG MGB, from FIAMM, STANDARD MOTOR PRODUCTS and ACDELCO. FIAMM 7210223 carries the "Popular" badge. 18 parts fit every engine; the other 1 is engine-specific.
In the Accessory Replacement grade, FIAMM supplies 7 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
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Fits: 1.8L L4 | 16164N | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular Fits: 1.8L L4 | 16164 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| REMY Popular Fits: 1.8L L4 | 16164 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| BOSCH Fits: 1.8L L4 | SR193X | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| FVP Fits: 1.8L L4 | 16164 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 1.8L L4 | 16164 | 🇺🇸 US 🇨🇦 CA | 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.
6 Starter Motor parts for the 1973 MG MGB come from 6 brands — WAI GLOBAL, PURE ENERGY, REMY and 3 other brands. The "Popular" part is PURE ENERGY 16164.
The New section: 1 option from WAI GLOBAL. WAI GLOBAL 16164N is listed in this group.
The Remanufactured section: 5 options from PURE ENERGY, REMY, BOSCH and 2 other brands. PURE ENERGY 16164 is listed in this group.
Listed part numbers: PURE ENERGY 16164 and WAI GLOBAL 16164N, plus the other parts above.
Starter Solenoid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 1973 MGB engines | 1M1045 | 🇺🇸 US 🇨🇦 CA | 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 1973 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. 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: Horn and Battery Cable .
Frequently Asked Questions
How many electrical parts fit the 1973 MG MGB?
Our catalog currently lists 48 electrical parts for the 1973 MG MGB across 7 subcategories and 15 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 1973 MG MGB engines?
Some do. 21 parts fit every engine; the other 27 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 1973 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 1973 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 1973 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 1973 MG MGB
Electrical Parts for Other MG MGB 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.