27 Ignition parts are listed for the 1966 Morgan Plus 4, in 5 part types, covering both the 1.5L L4 and the 2.1L L4. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1966 Morgan Plus 4, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 25 parts of the 27 listed are Spark Plug (15 parts), Ignition Coil (8 parts) and Ignition Conversion Kit (2 parts). The other 2 part types cover the remaining 2 parts.
The 1966 Morgan Plus 4 was sold with both the 1.5L L4 and the 2.1L L4. 11 parts fit every engine; the other 16 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1966 Morgan Plus 4 ignition parts are CHAMPION (5 parts), STANDARD MOTOR PRODUCTS (4 parts) and ACDELCO (4 parts), plus 8 more brands. Quality grades include Copper / Nickel, Economy and Iridium.
6 parts on this 1966 Morgan Plus 4 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS UC15T (Ignition Coil) and ACDELCO R42XLS (Spark Plug). Click any part number to see every vehicle that part fits.
Distributor Rotor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 1966 Plus 4 engines | LU300 | 🇺🇸 US | 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.
This group shows a single part: STANDARD MOTOR PRODUCTS LU300.
Ignition Breaker Points
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: all 1966 Plus 4 engines | LU1617P | 🇺🇸 US | View on Amazon |
This table covers the breaker points in a points-type distributor.
One part is listed for the 1966 Morgan Plus 4 — STANDARD MOTOR PRODUCTS LU1617P.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 1966 Plus 4 engines | UC15T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| FVP Fits: all 1966 Plus 4 engines | UC15F | 🇺🇸 US 🇨🇦 CA | Alternate Replacement Part | View on Amazon |
| HOLSTEIN Fits: all 1966 Plus 4 engines | 2IGC0058 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SKP Fits: all 1966 Plus 4 engines | SKUF3T | 🇺🇸 US | Coil Pack | View on Amazon |
| SPECTRA PREMIUM Fits: all 1966 Plus 4 engines | C654 | 🇺🇸 US | Pack | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: all 1966 Plus 4 engines | UC15 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: all 1966 Plus 4 engines | C15 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: all 1966 Plus 4 engines | 5C1019 | 🇺🇸 US 🇨🇦 CA | 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.
8 Ignition Coil parts are listed for the 1966 Morgan Plus 4, from STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 4 other brands. STANDARD MOTOR PRODUCTS UC15T carries the "Popular" badge. All of them fit every engine offered in the 1966 Plus 4.
In the Economy grade, STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 2 other brands supply 5 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS UC15T.
The Standard Replacement section lists 3 options from STANDARD MOTOR PRODUCTS, UNITED MOTOR PRODUCTS and WELLS — built to original-equipment specification. STANDARD MOTOR PRODUCTS UC15 is listed in this group.
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 Fits: all 1966 Plus 4 engines | 1A4222 | 🇺🇸 US | with Lucas Distributor # 25D412 Volt | View on Amazon |
| WELLS Fits: 2.1L L4 | 1A4147 | 🇺🇸 US | with Lucas Distributor # 35D812 Volt | View on Amazon |
This table covers the Ignition Conversion kits.
2 Ignition Conversion Kit parts for the 1966 Morgan Plus 4 come from WELLS. 1 part fits every engine; the other 1 is engine-specific.
This group includes WELLS 1A4222 and WELLS 1A4147.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.026", 0.030", 0.032", 0.035", 0.04", 0.041" and 0.044". Replacement brands in this table include CHAMPION, ACDELCO and AUTOLITE.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 1.5L L4 | R42XLS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| ACDELCO Popular Fits: 2.1L L4 | R43XLS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION Popular Fits: 1.5L L4 | 120 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.026" | View on Amazon |
| CHAMPION Fits: 1.5L L4 | 123 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION Fits: 2.1L L4 | 327 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.04" | View on Amazon |
| CHAMPION Fits: 2.1L L4 | 312 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION Fits: 2.1L L4 | 3121 | 🇺🇸 US | Copper Plus | View on Amazon |
| MOTORCRAFT Fits: 2.1L L4 | SP436AX | 🇺🇸 US | Copper | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 1.5L L4 | 41804 | 🇺🇸 US 🇨🇦 CA | ProfessionalDouble Platinum | View on Amazon |
| AUTOLITE Fits: 2.1L L4 | 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 Popular Fits: 2.1L L4 | XP64 | 🇺🇸 US | Display PackQTY2 | View on Amazon |
| AUTOLITE Fits: 1.5L L4 | XP63 | 🇺🇸 US | Iridium XPDisplay Pack | View on Amazon |
| SKP Fits: 1.5L L4 | SP1041 | 🇺🇸 US | Tapered Ground Electrode with Platinum Chip | View on Amazon |
| SKP Fits: 2.1L L4 | 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 |
|---|---|---|---|---|
| ACDELCO Fits: 1.5L L4 | 4 | 🇺🇸 US 🇨🇦 CA | ProfessionalRapidfire | 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.
15 Spark Plug parts for the 1966 Morgan Plus 4 come from 5 brands — CHAMPION, ACDELCO, AUTOLITE and 2 other brands. The "Popular" part is ACDELCO R42XLS.
The Copper / Nickel section lists 8 options from CHAMPION, ACDELCO and MOTORCRAFT — grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. ACDELCO R42XLS is listed in this group.
The Double Platinum (lasts up to 3x longer than Copper / Nickel) section lists 2 options from ACDELCO and AUTOLITE — 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. ACDELCO 41804 is listed in this group.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, AUTOLITE and SKP supply 4 parts: grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is AUTOLITE XP64.
The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 1 option from ACDELCO — grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. ACDELCO 4 is listed in this group.
Buying Ignition Parts for a 1966 Morgan Plus 4
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Some ignition 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, 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 1966 Morgan Plus 4?
Our catalog currently lists 27 ignition parts for the 1966 Morgan Plus 4 across 5 subcategories and 11 brands, covering both the 1.5L L4 and the 2.1L L4. Each part is matched to the engine(s) it fits.
Do ignition parts differ between 1966 Morgan Plus 4 engines?
Some do. 11 parts fit every engine; the other 16 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 ignition problems on a 1966 Morgan Plus 4?
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 1966 Morgan Plus 4?
Notes on this page include pre-set gaps of 0.025", 0.026", 0.030", 0.032", 0.035", 0.04", 0.041" 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 1966 Morgan Plus 4 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 1966 Morgan Plus 4?
First match the engine — each row shows which engine(s) the part fits. 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 1966 Morgan Plus 4
Ignition Parts for Other Morgan Plus 4 Years
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