The 1933 Desoto Model SD has 6 ignition parts with verified fitment on this page — 1 part type and 1 brand, covering the 218cid L6 engine. Each part includes a manufacturer part number and application notes.
The ignition system on the 1933 Desoto Model SD 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 218cid L6 — the only engine offered in the 1933 Desoto Model SD.
Every ignition part listed for the 1933 Desoto Model SD comes from CHAMPION.
2 parts on this 1933 Desoto Model SD page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including CHAMPION 844 (Spark Plug) and CHAMPION 511 (Spark Plug). Click any part number to see every vehicle that part fits.
Spark Plug
Summary: Notes include pre-set gaps of 0.025" and 0.03". Replacement brands in this table include CHAMPION.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CHAMPION Popular | 844 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | View on Amazon |
| CHAMPION Popular | 511 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | View on Amazon |
| CHAMPION | 854 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | View on Amazon |
| CHAMPION | 8441 | 🇺🇸 US | Copper Plus | View on Amazon |
| CHAMPION | 592 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | View on Amazon |
| CHAMPION | 592C | 🇺🇸 US | Copper Plus | 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.
6 Spark Plug parts for the 1933 Desoto Model SD come from CHAMPION. The "Popular" part is CHAMPION 844.
Listed part numbers: CHAMPION 844, CHAMPION 511 and CHAMPION 854, plus the other parts above.
Buying Ignition Parts for a 1933 Desoto Model SD
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 218cid 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 .
Frequently Asked Questions
How many ignition parts fit the 1933 Desoto Model SD?
Our catalog currently lists 6 ignition parts for the 1933 Desoto Model SD across 1 subcategory and 1 brand, covering the 218cid L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1933 Desoto Model SD?
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 1933 Desoto Model SD?
Notes on this page include pre-set gaps of 0.025" and 0.03". 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 1933 Desoto Model SD 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 1933 Desoto Model SD?
Every part on this page is matched to the 218cid 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 1933 Desoto Model SD
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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.