13 Ignition parts are listed for the 1945 Desoto Custom, in 3 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 1945 Desoto Custom delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. All 13 listed parts are Spark Plug (5 parts), Distributor Rotor (4 parts) and Ignition Coil (4 parts).
Every part on this page is matched to the 3.9L 237cid L6 — the only engine offered in the 1945 Desoto Custom.
The most listed brands for 1945 Desoto Custom ignition parts are STANDARD MOTOR PRODUCTS (3 parts), CHAMPION (3 parts) and LILAND GLOBAL (2 parts), plus 4 more brands. Quality grades include Economy, Premium and Standard Replacement.
1 part on this 1945 Desoto Custom page carries a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — ACDELCO R45 (Spark Plug). Click any part number to see every vehicle that part fits.
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 1945 Desoto Custom come from 3 brands — LILAND GLOBAL, STANDARD MOTOR PRODUCTS and WELLS.
This group includes LILAND GLOBAL AL98LG, LILAND GLOBAL AL98RBLG and STANDARD MOTOR PRODUCTS AL98 and the remaining parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | UC14F | 🇺🇸 US | 6 Voltwithout External Resistor | View on Amazon |
| STANDARD MOTOR PRODUCTS | UC14T | 🇺🇸 US | T-Series6 Volt | 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.
4 Ignition Coil parts are listed for the 1945 Desoto Custom, from STANDARD MOTOR PRODUCTS, FVP and WELLS.
In the Economy grade, FVP and STANDARD MOTOR PRODUCTS supply 2 parts: the catalog's value-priced group. A representative part number is FVP UC14F.
The Premium section lists 1 option from STANDARD MOTOR PRODUCTS — a step above OE specification in materials, tolerances or warranty terms. STANDARD MOTOR PRODUCTS UC14 is listed in this group.
The Standard Replacement section lists 1 option from WELLS — built to original-equipment specification. WELLS 5C1063 is listed in this group.
Part numbers include FVP UC14F, STANDARD MOTOR PRODUCTS UC14T and STANDARD MOTOR PRODUCTS UC14, among others listed above.
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 | 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 |
| 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 for the 1945 Desoto Custom come from 3 brands — CHAMPION, ACDELCO and MOTORCRAFT. The "Popular" part is ACDELCO R45.
Part numbers include ACDELCO R45, CHAMPION 511 and CHAMPION 592, among others listed above.
Buying Ignition Parts for a 1945 Desoto Custom
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: Spark Plug and Distributor Rotor .
Frequently Asked Questions
How many ignition parts fit the 1945 Desoto Custom?
Our catalog currently lists 13 ignition parts for the 1945 Desoto Custom across 3 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 1945 Desoto Custom?
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 1945 Desoto Custom?
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 1945 Desoto Custom 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 1945 Desoto Custom?
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 1945 Desoto Custom
Ignition Parts for Other Desoto Custom Years
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