This page lists 9 ignition parts for the 1951 Fiat 500, across 2 part types, covering the 570cc L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1951 Fiat 500, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 9 listed parts are Spark Plug (5 parts) and Spark Plug Wire (4 parts).
The 1951 Fiat 500 came with a single engine, the 570cc L4, and every part is verified against it.
5 brands supply ignition parts for the 1951 Fiat 500, led by CHAMPION (3 parts), STANDARD MOTOR PRODUCTS (2 parts) and UNITED MOTOR PRODUCTS (2 parts), plus 2 more brands. Quality grades include Standard Replacement and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1951 Fiat 500. 1 part has it: ACDELCO R45 (Spark Plug). Each part number opens a page with every vehicle that part fits.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.03" and 0.040". Replacement brands in this table include CHAMPION, ACDELCO and MOTORCRAFT.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | R45 | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION | 841 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | View on Amazon |
| CHAMPION | 8411 | 🇺🇸 US | Copper Plus | View on Amazon |
| CHAMPION | 871 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | View on Amazon |
| MOTORCRAFT | SP477 | 🇺🇸 US | Nickel | 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 are listed for the 1951 Fiat 500, from CHAMPION, ACDELCO and MOTORCRAFT. ACDELCO R45 carries the "Popular" badge.
This group includes ACDELCO R45, CHAMPION 841 and CHAMPION 8411 and the remaining parts above.
Spark Plug Wire
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | 3400 | 🇺🇸 US | SetCore Material: Suppression Core | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | 23400 | 🇺🇸 US | Pro SeriesSet | View on Amazon |
| UNITED MOTOR PRODUCTS | 641 | 🇺🇸 US | Permashield-DelcoreSet | View on Amazon |
| UNITED MOTOR PRODUCTS | 640 | 🇺🇸 US | Set | View on Amazon |
This table covers the Spark Plug wires.
4 Spark Plug Wire parts for the 1951 Fiat 500 come from 2 brands — STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
In the Premium grade, STANDARD MOTOR PRODUCTS supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is STANDARD MOTOR PRODUCTS 3400.
In the Standard Replacement grade, UNITED MOTOR PRODUCTS and STANDARD MOTOR PRODUCTS supply 3 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS 23400.
This group includes STANDARD MOTOR PRODUCTS 3400, STANDARD MOTOR PRODUCTS 23400 and UNITED MOTOR PRODUCTS 641 and the remaining parts above.
Buying Ignition Parts for a 1951 Fiat 500
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 570cc 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 Spark Plug Wire .
Frequently Asked Questions
How many ignition parts fit the 1951 Fiat 500?
Our catalog currently lists 9 ignition parts for the 1951 Fiat 500 across 2 subcategories and 5 brands, covering the 570cc L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1951 Fiat 500?
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 1951 Fiat 500?
Notes on this page include pre-set gaps of 0.025", 0.03" and 0.040". 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 1951 Fiat 500 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 1951 Fiat 500?
Every part on this page is matched to the 570cc 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 1951 Fiat 500
Ignition Parts for Other Fiat 500 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.