This page lists 15 ignition parts for the 1979 Morgan Plus 8, across 1 part type, covering the 3.5L V8 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1979 Morgan Plus 8, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Every listed part is a Spark Plug.
Every part on this page is matched to the 3.5L V8 — the only engine offered in the 1979 Morgan Plus 8.
The most listed brands for 1979 Morgan Plus 8 ignition parts are CHAMPION (6 parts), NGK (5 parts) and ACDELCO (3 parts), plus 1 more brand. Quality grades include Copper / Nickel, Iridium and Double Platinum.
3 parts on this 1979 Morgan Plus 8 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including CHAMPION 404 (Spark Plug) and NGK 6637 (Spark Plug). Click any part number to see every vehicle that part fits.
Spark Plug
Summary: Notes include pre-set gaps of 0.03", 0.032", 0.035", 0.036", 0.040" and 0.041". Replacement brands in this table include CHAMPION, NGK and ACDELCO.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION Popular | 404 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.035" | View on Amazon |
| ACDELCO | R42XLS | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION | 415 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.032" | View on Amazon |
| CHAMPION | 4041 | 🇺🇸 US | Copper PlusClassification: Champion Copper Plus | View on Amazon |
| CHAMPION | 4151 | 🇺🇸 US | Copper PlusClassification: Champion Copper Plus Small Engine | View on Amazon |
| NGK | 6427 | 🇺🇸 US | V-PowerPre-Set Gap: 0.032" | View on Amazon |
| NGK | 7131 | 🇺🇸 US | StandardPre-Set Gap: 0.036" | View on Amazon |
| NGK | 4008 | 🇺🇸 US | StandardPre-Set Gap: 0.032" | View on Amazon |
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | 41804 | 🇺🇸 US 🇨🇦 CA | ProfessionalDouble Platinum | View on Amazon |
| CHAMPION | 7415 | 🇺🇸 US | Double Platinum PowerPre-Set Gap: 0.032" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 6637 | 🇺🇸 US | Iridium IXPre-Set Gap: 0.032" | View on Amazon |
| CHAMPION | 9804 | 🇺🇸 US | IridiumPre-Set Gap: 0.03" | View on Amazon |
| SKP | SP1041 | 🇺🇸 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 |
|---|---|---|---|---|
| NGK Popular | 7084 | 🇺🇸 US | G-PowerPre-Set Gap: 0.040" | View on Amazon |
| ACDELCO | 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 1979 Morgan Plus 8 come from 4 brands — CHAMPION, NGK, ACDELCO and 1 other brand. The "Popular" part is CHAMPION 404.
The Copper / Nickel section lists 8 options from CHAMPION, NGK and ACDELCO — grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. CHAMPION 404 is listed in this group.
The Double Platinum (lasts up to 3x longer than Copper / Nickel) section lists 2 options from ACDELCO and CHAMPION — 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, NGK, CHAMPION and SKP supply 3 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 NGK 6637.
The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 2 options from NGK and 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. NGK 7084 is listed in this group.
Buying Ignition Parts for a 1979 Morgan Plus 8
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 3.5L V8 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 .
Frequently Asked Questions
How many ignition parts fit the 1979 Morgan Plus 8?
Our catalog currently lists 15 ignition parts for the 1979 Morgan Plus 8 across 1 subcategory and 4 brands, covering the 3.5L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1979 Morgan Plus 8?
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 1979 Morgan Plus 8?
Notes on this page include pre-set gaps of 0.03", 0.032", 0.035", 0.036", 0.040" and 0.041". 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 1979 Morgan Plus 8 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 1979 Morgan Plus 8?
Every part on this page is matched to the 3.5L V8 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 1979 Morgan Plus 8
Ignition Parts for Other Morgan Plus 8 Years
Switch vehicle or jump to a subcategory
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.