This page lists 36 ignition parts for the 1957 MG Mga, across 8 part types, covering the 1.5L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1957 MG Mga, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Spark Plug (12 parts), Ignition Coil (9 parts) and Ignition Breaker Points (4 parts). The other 5 part types cover the remaining 11 parts.
The 1957 MG Mga came with a single engine, the 1.5L L4, and every part is verified against it.
14 brands supply ignition parts for the 1957 MG Mga, led by STANDARD MOTOR PRODUCTS (9 parts), WELLS (6 parts) and DENSO (4 parts), plus 11 more brands. Quality grades include Standard Replacement, Copper / Nickel and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1957 MG Mga. 5 parts have it, including STANDARD MOTOR PRODUCTS UC15T (Ignition Coil) and ACDELCO R43XLS (Spark Plug). Each part number opens a page with every vehicle that part fits.
Condenser / Capacitor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | LU206T | 🇺🇸 US | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | LU206 | 🇺🇸 US | View on Amazon | |
| WELLS | 5H1011 | 🇺🇸 US | Standard Duty | View on Amazon |
This table covers the capacitors used in this electrical or A/C circuit.
3 Condenser / Capacitor parts for the 1957 MG Mga come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
The Economy section lists 1 option from STANDARD MOTOR PRODUCTS — the catalog's value-priced group. STANDARD MOTOR PRODUCTS LU206T is listed in this group.
In the Standard Replacement grade, STANDARD MOTOR PRODUCTS and WELLS supply 2 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS LU206.
Part numbers include STANDARD MOTOR PRODUCTS LU206T, STANDARD MOTOR PRODUCTS LU206 and WELLS 5H1011.
Distributor Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | LU420 | 🇺🇸 US | View on Amazon |
This table covers the Distributor caps. 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.
One part is listed for the 1957 MG Mga — STANDARD MOTOR PRODUCTS LU420.
Distributor Rotor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | LU300 | 🇺🇸 US | View on Amazon | |
| WELLS | 4R1187 | 🇺🇸 US | with Lucas Distributor | View on Amazon |
This table covers the Distributor rotors. Typical signs include shudder under braking, or a lip at the outer edge. Do not put new pads on a rotor that is below minimum thickness.
2 Distributor Rotor parts are listed for the 1957 MG Mga, from STANDARD MOTOR PRODUCTS and WELLS.
This group includes STANDARD MOTOR PRODUCTS LU300 and WELLS 4R1187.
Ignition Breaker Points
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FACET | 14683MHDV | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS | LU1617P | 🇺🇸 US | View on Amazon | |
| WELLS | 4P1083 | 🇺🇸 US | with Lucas Distributor | View on Amazon |
| WELLS | 8T1008 | 🇺🇸 US | Includes Condenser | View on Amazon |
This table covers the breaker points in a points-type distributor.
4 Ignition Breaker Points parts for the 1957 MG Mga come from 3 brands — WELLS, FACET and STANDARD MOTOR PRODUCTS.
Part numbers include FACET 14683MHDV, STANDARD MOTOR PRODUCTS LU1617P and WELLS 4P1083, among others listed above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | UC15T | 🇺🇸 US | T-Series | View on Amazon |
| FVP | UC15F | 🇺🇸 US | Alternate Replacement Part | View on Amazon |
| HOLSTEIN | 2IGC0058 | 🇺🇸 US | View on Amazon | |
| SKP | SKUF3T | 🇺🇸 US | Coil Pack | View on Amazon |
| SPECTRA PREMIUM | C654 | 🇺🇸 US | Pack | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 48863 | 🇺🇸 US | 12 VoltInternal Resistor Coil | View on Amazon |
| STANDARD MOTOR PRODUCTS | UC15 | 🇺🇸 US | View on Amazon | |
| UNITED MOTOR PRODUCTS | C15 | 🇺🇸 US | View on Amazon | |
| WELLS | 5C1019 | 🇺🇸 US | Used on most import products with 12 Volt system with Internal resistorUniversal 12 Volt Coil | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
9 Ignition Coil parts for the 1957 MG Mga come from 8 brands — STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 5 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS UC15T.
The Economy section: 5 options from STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 2 other brands. STANDARD MOTOR PRODUCTS UC15T is listed in this group.
Standard Replacement: 4 parts, from NGK, STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and 1 other brand. A representative part number is NGK 48863.
This group includes STANDARD MOTOR PRODUCTS UC15T, FVP UC15F and HOLSTEIN 2IGC0058 and the remaining parts above.
Ignition Conversion Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1A4153 | 🇺🇸 US | Lucas Distributor # DM2P4, Late DM2 Distributor12 Volt | View on Amazon |
This table covers the Ignition Conversion kits.
One part is listed for the 1957 MG Mga — WELLS 1A4153.
Spark Plug
Summary: Notes include pre-set gaps of 0.024", 0.025", 0.026", 0.030", 0.032", 0.036", 0.040" and 0.044". Replacement brands in this table include DENSO, CHAMPION and AUTOLITE.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | R43XLS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION Popular | 120 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.026" | View on Amazon |
| NGK Popular | 4922 | 🇺🇸 US | StandardPre-Set Gap: 0.036" | View on Amazon |
| CHAMPION | 123 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| DENSO | 3051 | 🇺🇸 US | U-Groove ConventionalPre-Set Gap: 0.032" | View on Amazon |
| MOTORCRAFT | SP436AX | 🇺🇸 US | Copper | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOLITE | APP64 | 🇺🇸 US | Double PlatinumHex Size: 13/16 In | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOLITE | XP64 | 🇺🇸 US | Display PackQTY2 | View on Amazon |
| DENSO | 5306 | 🇺🇸 US | Iridium PowerHex Size: 20.6 mm | View on Amazon |
| DENSO | 4709 | 🇺🇸 US | Iridium TTSolid Terminal | View on Amazon |
| SKP | SP1042 | 🇺🇸 US | Tapered Ground Electrode with Platinum Chip | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO | 4502 | 🇺🇸 US | Platinum TTSolid Terminal | View on Amazon |
This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.
12 Spark Plug parts are listed for the 1957 MG Mga, from DENSO, CHAMPION, AUTOLITE and 4 other brands. ACDELCO R43XLS carries the "Popular" badge.
In the Copper / Nickel grade, CHAMPION, ACDELCO, NGK and 2 other brands supply 6 parts: grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO R43XLS.
In the Double Platinum (lasts up to 3x longer than Copper / Nickel) grade, AUTOLITE supplies 1 part: grouped under the catalog's "Double Platinum (lasts up to 3x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is AUTOLITE APP64.
The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 4 options from DENSO, AUTOLITE and SKP — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. AUTOLITE XP64 is listed in this group.
In the Platinum (lasts up to 2x longer than Copper / Nickel) grade, DENSO supplies 1 part: grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is DENSO 4502.
Spark Plug Wire
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | 55437 | 🇺🇸 US | IntermotorSet | View on Amazon |
| UNITED MOTOR PRODUCTS | 9403 | 🇺🇸 US | SetUnited-Packard | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 9044Q | 🇺🇸 US 🇨🇦 CA | GoldSet | View on Amazon |
| STANDARD MOTOR PRODUCTS | 29437 | 🇺🇸 US | Pro SeriesSet | View on Amazon |
This table covers the Spark Plug wires.
4 Spark Plug Wire parts for the 1957 MG Mga come from 3 brands — STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and ACDELCO.
In the Premium grade, STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS supply 2 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is STANDARD MOTOR PRODUCTS 55437.
Standard Replacement: 2 parts, from ACDELCO and STANDARD MOTOR PRODUCTS. A representative part number is ACDELCO 9044Q.
Listed part numbers: STANDARD MOTOR PRODUCTS 55437, UNITED MOTOR PRODUCTS 9403 and ACDELCO 9044Q, plus the other parts above.
Buying Ignition Parts for a 1957 MG Mga
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- 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, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Spark Plug and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 1957 MG Mga?
Our catalog currently lists 36 ignition parts for the 1957 MG Mga across 8 subcategories and 14 brands, covering the 1.5L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1957 MG Mga?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What spark-plug gap is listed for the 1957 MG Mga?
Notes on this page include pre-set gaps of 0.024", 0.025", 0.026", 0.030", 0.032", 0.036", 0.040" and 0.044". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
What should I replace at the same time?
Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
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 1957 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 1957 MG Mga?
Every part on this page is matched to the 1.5L L4 engine. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1957 MG Mga
Ignition Parts for Other MG Mga Years
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