8 Ignition parts are listed for the 1956 Aston Martin DB3, in 3 part types, covering the 3.0L L6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1956 Aston Martin DB3, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 8 listed parts are Spark Plug (5 parts), Ignition Conversion Kit (2 parts) and Spark Plug / Ignition Coil Boot (1 part).
Every part on this page is matched to the 3.0L L6 — the only engine offered in the 1956 Aston Martin DB3.
The most listed brands for 1956 Aston Martin DB3 ignition parts are WELLS (2 parts), NGK (2 parts) and CHAMPION (2 parts), plus 2 more brands. Quality grades include Copper / Nickel and Iridium.
1 part on this 1956 Aston Martin DB3 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — NGK 3922 (Spark Plug). Click any part number to see every vehicle that part fits.
Ignition Conversion Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1A4157 | 🇺🇸 US | with Lucas Distributor # DVXH6A12 Volt | View on Amazon |
| WELLS | 1A4231 | 🇺🇸 US | Lucas Distributor # DVXH6A, Lobe Sensor Module, with Counter Clockwise Rotation12 Volt | View on Amazon |
This table covers the Ignition Conversion kits.
2 Ignition Conversion Kit parts for the 1956 Aston Martin DB3 come from WELLS.
Listed part numbers: WELLS 1A4157 and WELLS 1A4231.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.028", 0.030" and 0.032". Replacement brands in this table include NGK, CHAMPION and AUTOLITE.
Copper / Nickel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 3922 | 🇺🇸 US | StandardPre-Set Gap: 0.028" | View on Amazon |
| AUTOLITE | 4093 | 🇺🇸 US | Copper Non-ResistorPre-Set Gap: 0.030" | View on Amazon |
| CHAMPION | 306 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION | 830 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK | 3419 | 🇺🇸 US | Iridium IXPre-Set Gap: 0.032" | 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.
5 Spark Plug parts for the 1956 Aston Martin DB3 come from 3 brands — NGK, CHAMPION and AUTOLITE. The "Popular" part is NGK 3922.
The Copper / Nickel section lists 4 options from CHAMPION, NGK and AUTOLITE — grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. NGK 3922 is listed in this group.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, NGK supplies 1 part: 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 3419.
Part numbers include NGK 3922, AUTOLITE 4093 and CHAMPION 306, among others listed above.
Spark Plug / Ignition Coil Boot
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| METRO | RP1Z | 🇺🇸 US 🇨🇦 CA | Sold Individually | View on Amazon |
This table covers the silicone and rubber boots that insulate the coil-to-plug spark path. Typical signs include a misfire in the rain, carbon tracking on the boot, or a snap when you pop the coil off. Replace boots as a set on a high-mileage engine; one cracked boot will take the coil with it.
One part is listed for the 1956 Aston Martin DB3 — METRO RP1Z.
Buying Ignition Parts for a 1956 Aston Martin DB3
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 3.0L L6 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 Conversion Kit .
Frequently Asked Questions
How many ignition parts fit the 1956 Aston Martin DB3?
Our catalog currently lists 8 ignition parts for the 1956 Aston Martin DB3 across 3 subcategories and 5 brands, covering the 3.0L L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1956 Aston Martin DB3?
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 1956 Aston Martin DB3?
Notes on this page include pre-set gaps of 0.025", 0.028", 0.030" and 0.032". 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 1956 Aston Martin DB3 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 1956 Aston Martin DB3?
Every part on this page is matched to the 3.0L L6 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 1956 Aston Martin DB3
Ignition Parts for Other Aston Martin DB3 Years
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