21 Ignition parts are listed for the 1948 Desoto S-11, in 7 part types, covering the 3.9L 237cid L6 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The ignition system on the 1948 Desoto S-11 delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Ignition Coil (5 parts), Distributor Cap (4 parts) and Distributor Rotor (4 parts). The other 4 part types cover the remaining 8 parts.
Every part on this page is matched to the 3.9L 237cid L6 — the only engine offered in the 1948 Desoto S-11.
The most listed brands for 1948 Desoto S-11 ignition parts are STANDARD MOTOR PRODUCTS (6 parts), WELLS (5 parts) and LILAND GLOBAL (4 parts), plus 4 more brands. Quality grades include Standard Replacement, Economy and Premium.
1 part on this 1948 Desoto S-11 page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — STANDARD MOTOR PRODUCTS UC14T (Ignition Coil). Click any part number to see every vehicle that part fits.
Condenser / Capacitor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | AL118T | 🇺🇸 US | T-SeriesTerminal Type: Slide | View on Amazon |
This table covers the capacitors used in this electrical or A/C circuit.
One part is listed for the 1948 Desoto S-11 — STANDARD MOTOR PRODUCTS AL118T.
Distributor Cap
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL | AL96LG | 🇺🇸 US | Body Material: PhenolicBlack Brass | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL | AL96BALG | 🇺🇸 US | Black AluminumBody Material: Phenolic | View on Amazon |
| STANDARD MOTOR PRODUCTS | AL96 | 🇺🇸 US | View on Amazon | |
| WELLS | 5D1065 | 🇺🇸 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.
4 Distributor Cap parts for the 1948 Desoto S-11 come from 3 brands — LILAND GLOBAL, STANDARD MOTOR PRODUCTS and WELLS.
In the Premium grade, LILAND GLOBAL supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is LILAND GLOBAL AL96LG.
In the Standard Replacement grade, LILAND GLOBAL, STANDARD MOTOR PRODUCTS and WELLS supply 3 parts: built to original-equipment specification. A representative part number is LILAND GLOBAL AL96BALG.
This group includes LILAND GLOBAL AL96LG, LILAND GLOBAL AL96BALG and STANDARD MOTOR PRODUCTS AL96 and the remaining parts above.
Distributor Rotor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL | AL98LG | 🇺🇸 US | Height: 1.0 In | View on Amazon |
| LILAND GLOBAL | AL98RBLG | 🇺🇸 US | Red BrassPremium | View on Amazon |
| STANDARD MOTOR PRODUCTS | AL98 | 🇺🇸 US | View on Amazon | |
| WELLS | 4R1010 | 🇺🇸 US | Contact Material: Brass | View on Amazon |
This table covers the Distributor rotors. Typical signs include shudder under braking, or a lip at the outer edge. Do not put new pads on a rotor that is below minimum thickness.
4 Distributor Rotor parts for the 1948 Desoto S-11 come from 3 brands — LILAND GLOBAL, STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: LILAND GLOBAL AL98LG, LILAND GLOBAL AL98RBLG and STANDARD MOTOR PRODUCTS AL98, plus the other parts above.
Ignition Breaker Points
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | AL4556PT | 🇺🇸 US | T-Series | View on Amazon |
This table covers the breaker points in a points-type distributor.
One part is listed for the 1948 Desoto S-11 — STANDARD MOTOR PRODUCTS AL4556PT.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | UC14T | 🇺🇸 US | T-Series6 Volt | View on Amazon |
| FVP | UC14F | 🇺🇸 US | View on Amazon | |
| HOLSTEIN | 2IGC0057 | 🇺🇸 US | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | UC14 | 🇺🇸 US | Blue Streak6 Volt | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 5C1063 | 🇺🇸 US | Fits most cars, trucks, tractors & industrial engs6 Volt (Universal Coil) used with external resistor or where resistance wire is an internal part of wiring harness. | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
5 Ignition Coil parts are listed for the 1948 Desoto S-11, from STANDARD MOTOR PRODUCTS, FVP, HOLSTEIN and 1 other brand. STANDARD MOTOR PRODUCTS UC14T carries the "Popular" badge.
In the Economy grade, STANDARD MOTOR PRODUCTS, FVP and HOLSTEIN supply 3 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS UC14T.
The Premium section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS UC14 is listed in this group.
The Standard Replacement section: 1 option from WELLS. WELLS 5C1063 is listed in this group.
Part numbers include STANDARD MOTOR PRODUCTS UC14T, FVP UC14F and HOLSTEIN 2IGC0057, among others listed above.
Ignition Conversion Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 1A4219 | 🇺🇸 US | Autolite IGS, IAP Distributors, Lobe Sensor Module6 Volt | View on Amazon |
| WELLS | 1A4218 | 🇺🇸 US | Autolite IGS, IAP Distributors, Lobe Sensor Module6 Volt | View on Amazon |
This table covers the Ignition Conversion kits.
2 Ignition Conversion Kit parts for the 1948 Desoto S-11 come from WELLS.
Listed part numbers: WELLS 1A4219 and WELLS 1A4218.
Spark Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | R45 | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION | 511 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.03" | 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.
4 Spark Plug parts for the 1948 Desoto S-11 come from 2 brands — CHAMPION and ACDELCO.
Listed part numbers: ACDELCO R45, CHAMPION 511 and CHAMPION 592, plus the other parts above.
Buying Ignition Parts for a 1948 Desoto S-11
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 3.9L 237cid 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: Ignition Coil and Distributor Cap .
Frequently Asked Questions
How many ignition parts fit the 1948 Desoto S-11?
Our catalog currently lists 21 ignition parts for the 1948 Desoto S-11 across 7 subcategories and 7 brands, covering the 3.9L 237cid L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1948 Desoto S-11?
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 1948 Desoto S-11?
Notes on this page include pre-set gaps of 0.03", 0.035" 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 1948 Desoto S-11 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 1948 Desoto S-11?
Every part on this page is matched to the 3.9L 237cid 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 1948 Desoto S-11
Ignition Parts for Other Desoto S-11 Years
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