The 1931 Desoto Model Sa has 5 ignition parts with verified fitment on this page — 2 part types and 4 brands, covering the 3.4L 205cid L6 engine. Each part includes a manufacturer part number and application notes.
The ignition system on the 1931 Desoto Model Sa delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 5 listed parts are Spark Plug (3 parts) and Distributor Cap (2 parts).
The 1931 Desoto Model Sa came with a single engine, the 3.4L 205cid L6, and every part is verified against it.
4 brands supply ignition parts for the 1931 Desoto Model Sa, led by CHAMPION (2 parts), LILAND GLOBAL (1 part) and WELLS (1 part), plus 1 more brand. Quality grades include Premium and Standard Replacement.
Each part number listed for the 1931 Desoto Model Sa opens a page with every vehicle that part fits.
Distributor Cap
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL | DR402LG | 🇺🇸 US | Black Brass | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 5D1347 | 🇺🇸 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.
2 Distributor Cap parts are listed for the 1931 Desoto Model Sa, from LILAND GLOBAL and WELLS.
The Premium section lists 1 option from LILAND GLOBAL — a step above OE specification in materials, tolerances or warranty terms. LILAND GLOBAL DR402LG is listed in this group.
The Standard Replacement section lists 1 option from WELLS — built to original-equipment specification. WELLS 5D1347 is listed in this group.
This group includes LILAND GLOBAL DR402LG and WELLS 5D1347.
Spark Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | R45 | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION | 516 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION | 541 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | 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.
3 Spark Plug parts are listed for the 1931 Desoto Model Sa, from CHAMPION and ACDELCO.
This group includes ACDELCO R45, CHAMPION 516 and CHAMPION 541.
Buying Ignition Parts for a 1931 Desoto Model Sa
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 3.4L 205cid 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 Distributor Cap .
Frequently Asked Questions
How many ignition parts fit the 1931 Desoto Model Sa?
Our catalog currently lists 5 ignition parts for the 1931 Desoto Model Sa across 2 subcategories and 4 brands, covering the 3.4L 205cid L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1931 Desoto Model Sa?
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 1931 Desoto Model Sa?
Notes on this page include pre-set gaps of 0.025" 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 1931 Desoto Model Sa 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 1931 Desoto Model Sa?
Every part on this page is matched to the 3.4L 205cid 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 1931 Desoto Model Sa
Ignition Parts for Other Desoto Model Sa 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.