This page lists 34 ignition parts for the 1956 Desoto Firedome, across 11 part types, covering the 5.4L 330cid V8 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1956 Desoto Firedome, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 21 parts of the 34 listed are Ignition Coil (9 parts), Distributor Cap (8 parts) and Distributor Rotor (4 parts). The other 8 part types cover the remaining 13 parts.
Every part on this page is matched to the 5.4L 330cid V8 — the only engine offered in the 1956 Desoto Firedome.
The most listed brands for 1956 Desoto Firedome ignition parts are STANDARD MOTOR PRODUCTS (10 parts), LILAND GLOBAL (7 parts) and WELLS (5 parts), plus 9 more brands. Quality grades include Standard Replacement, Economy and Premium.
4 parts on this 1956 Desoto Firedome page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS AL140 (Distributor Cap) and ACDELCO U505 (Ignition Coil). Click any part number to see every vehicle that part fits.
Ballast Resistor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | RU37 | 🇺🇸 US | View on Amazon |
This table covers the Ballast resistors.
One part is listed for the 1956 Desoto Firedome — STANDARD MOTOR PRODUCTS RU37.
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 1956 Desoto Firedome — STANDARD MOTOR PRODUCTS AL118T.
Distributor Cap
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL | AL148BBVLG | 🇺🇸 US | Black Brass | View on Amazon |
| LILAND GLOBAL | AL148LG | 🇺🇸 US | Black Brass | View on Amazon |
| LILAND GLOBAL | AL483LG | 🇺🇸 US | Tan Brass | View on Amazon |
| LILAND GLOBAL | AL148TBVLG | 🇺🇸 US | Tan Brass | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | AL140 | 🇺🇸 US | View on Amazon | |
| WELLS Popular | 3D1022 | 🇺🇸 US | Includes Rotor | View on Amazon |
| LILAND GLOBAL | AL140BAVLG | 🇺🇸 US | Black Aluminum | View on Amazon |
| WELLS | 5D1024 | 🇺🇸 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.
8 Distributor Cap parts for the 1956 Desoto Firedome come from 3 brands — LILAND GLOBAL, WELLS and STANDARD MOTOR PRODUCTS. The "Popular" part is STANDARD MOTOR PRODUCTS AL140.
In the Premium grade, LILAND GLOBAL supplies 4 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is LILAND GLOBAL AL148BBVLG.
In the Standard Replacement grade, WELLS, STANDARD MOTOR PRODUCTS and LILAND GLOBAL supply 4 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS AL140.
Listed part numbers: STANDARD MOTOR PRODUCTS AL140, LILAND GLOBAL AL148BBVLG and LILAND GLOBAL AL148LG, plus the other parts above.
Distributor Mounting Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 6464 | 🇺🇸 US | Distributor mounting gasket and Distributor shaft seal included | View on Amazon |
| VICTOR REINZ | 711387200 | 🇺🇸 US | View on Amazon |
This table covers the gaskets that seal the Distributor Mounting. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
2 Distributor Mounting Gasket parts for the 1956 Desoto Firedome come from 2 brands — FEL-PRO and VICTOR REINZ.
Listed part numbers: FEL-PRO 6464 and VICTOR REINZ 711387200.
Distributor Rotor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 4R1015 | 🇺🇸 US | with Single Points | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL | AL153LG | 🇺🇸 US | Color: BlackBody Material: Phenolic | View on Amazon |
| LILAND GLOBAL | AL153TBLG | 🇺🇸 US | Height: 1/4 InColor: Tan | View on Amazon |
| STANDARD MOTOR PRODUCTS | AL153 | 🇺🇸 US | 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 1956 Desoto Firedome come from 3 brands — LILAND GLOBAL, WELLS and STANDARD MOTOR PRODUCTS.
The Economy section lists 1 option from WELLS — the catalog's value-priced group. WELLS 4R1015 is listed in this group.
Standard Replacement: 3 parts, from LILAND GLOBAL and STANDARD MOTOR PRODUCTS. A representative part number is LILAND GLOBAL AL153LG.
Part numbers include WELLS 4R1015, LILAND GLOBAL AL153LG and LILAND GLOBAL AL153TBLG, among others listed above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| B&B | BB6012 | 🇺🇸 US | View on Amazon | |
| FVP | UC12F | 🇺🇸 US | View on Amazon | |
| HOLSTEIN | 2IGC0056 | 🇺🇸 US | View on Amazon | |
| SKP | SKUC12 | 🇺🇸 US | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UC12T | 🇺🇸 US | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | U505 | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| WELLS Popular | 5C1026 | 🇺🇸 US | Requires External Resistor: YES | View on Amazon |
| ACDELCO | E552C | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| STANDARD MOTOR PRODUCTS | UC12 | 🇺🇸 US | 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.
9 Ignition Coil parts are listed for the 1956 Desoto Firedome, from STANDARD MOTOR PRODUCTS, ACDELCO, B&B and 4 other brands. ACDELCO U505 carries the "Popular" badge.
Economy: 5 parts, from B&B, FVP, HOLSTEIN and 2 other brands. A representative part number is B&B BB6012.
The Standard Replacement section: 4 options from ACDELCO, WELLS and STANDARD MOTOR PRODUCTS. ACDELCO U505 is listed in this group.
Listed part numbers: ACDELCO U505, B&B BB6012 and FVP UC12F, plus the other parts above.
Ignition Coil Mounting Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | CB1 | 🇺🇸 US | View on Amazon | |
| WELLS | 4C1009 | 🇺🇸 US | Universal Coil BracketWith flange for capacitor mounting. For Delco-Remy Applications. | View on Amazon |
This table covers the brackets that mount the Ignition Coil Mounting. Typical signs include a cracked mount, a rattle, or a bracket that no longer holds alignment. Confirm position in the notes. Many brackets look alike and bolt to different corners.
2 Ignition Coil Mounting Bracket parts for the 1956 Desoto Firedome come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: STANDARD MOTOR PRODUCTS CB1 and WELLS 4C1009.
Ignition Lock Cylinder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | US12L | 🇺🇸 US | View on Amazon |
This table covers the lock cylinders in the ignition switch.
One part is listed for the 1956 Desoto Firedome — STANDARD MOTOR PRODUCTS US12L.
Spark Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | R43S | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION | 58 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.035" | 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.
2 Spark Plug parts for the 1956 Desoto Firedome come from 2 brands — ACDELCO and CHAMPION.
Part numbers include ACDELCO R43S and CHAMPION 58.
Spark Plug Tube Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE | 2066C | 🇺🇸 US | Molded Rubber | View on Amazon |
| VICTOR REINZ | 181017101 | 🇺🇸 US | Valve Cover | View on Amazon |
This table covers the seals at the Spark Plug Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
2 Spark Plug Tube Seal parts are listed for the 1956 Desoto Firedome, from MAHLE / CLEVITE and VICTOR REINZ.
This group includes MAHLE / CLEVITE 2066C and VICTOR REINZ 181017101.
Spark Plug Wire
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | 3800 | 🇺🇸 US | SetCore Material: Suppression Core | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | 23800 | 🇺🇸 US | Pro SeriesSet | View on Amazon |
This table covers the Spark Plug wires.
STANDARD MOTOR PRODUCTS supplies both parts for the 1956 Desoto Firedome.
The Premium section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS 3800 is listed in this group.
The Standard Replacement section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS 23800 is listed in this group.
This group includes STANDARD MOTOR PRODUCTS 3800 and STANDARD MOTOR PRODUCTS 23800.
Buying Ignition Parts for a 1956 Desoto Firedome
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 5.4L 330cid V8 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 1956 Desoto Firedome?
Our catalog currently lists 34 ignition parts for the 1956 Desoto Firedome across 11 subcategories and 12 brands, covering the 5.4L 330cid V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 1956 Desoto Firedome?
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 1956 Desoto Firedome?
Notes on this page include a 0.035" pre-set gap. 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 1956 Desoto Firedome 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 1956 Desoto Firedome?
Every part on this page is matched to the 5.4L 330cid V8 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 1956 Desoto Firedome
Ignition Parts for Other Desoto Firedome Years
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