This page lists 31 ignition parts for the 1951 Hudson Commodore Series, across 8 part types, covering both the 4.2L 254cid L8 and the 4.3L 262cid L6. Every part shows its brand, manufacturer part number and fitment notes.
The ignition system on the 1951 Hudson Commodore Series delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Distributor Rotor (8 parts), Ignition Coil (6 parts) and Spark Plug (5 parts). The other 5 part types cover the remaining 12 parts.
The 1951 Hudson Commodore Series was sold with both the 4.2L 254cid L8 and the 4.3L 262cid L6. 1 part fits every engine; the other 30 are engine-specific. Each part shows which engine(s) it fits.
9 brands supply ignition parts for the 1951 Hudson Commodore Series, led by STANDARD MOTOR PRODUCTS (9 parts), LILAND GLOBAL (7 parts) and WELLS (5 parts), plus 6 more brands. Quality grades include Standard Replacement, Economy and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1951 Hudson Commodore Series. 4 parts have it, including STANDARD MOTOR PRODUCTS AL99 (Distributor Rotor) and STANDARD MOTOR PRODUCTS UC14T (Ignition Coil). Each part number opens a page with every vehicle that part fits.
Condenser / Capacitor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.2L 254cid L8 | AL118T | 🇺🇸 US | T-SeriesTerminal Type: Slide | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.3L 262cid L6 | AL111T | 🇺🇸 US | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 1951 Commodore Series engines | 5H1018 | 🇺🇸 US | Heavy Duty | View on Amazon |
This table covers the capacitors used in this electrical or A/C circuit.
3 Condenser / Capacitor parts for the 1951 Hudson Commodore Series come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS. 1 part fits every engine; the other 2 are engine-specific.
The Economy section lists 2 options from STANDARD MOTOR PRODUCTS — the catalog's value-priced group. STANDARD MOTOR PRODUCTS AL118T is listed in this group.
In the Standard Replacement grade, WELLS supplies 1 part: built to original-equipment specification. A representative part number is WELLS 5H1018.
Listed part numbers: STANDARD MOTOR PRODUCTS AL118T, STANDARD MOTOR PRODUCTS AL111T and WELLS 5H1018.
Distributor Cap
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL Fits: 4.2L 254cid L8 | AL493LG | 🇺🇸 US | Black Brass | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.2L 254cid L8 | AL493 | 🇺🇸 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 1951 Hudson Commodore Series, from LILAND GLOBAL and STANDARD MOTOR PRODUCTS.
The Premium section lists 1 option from LILAND GLOBAL — a step above OE specification in materials, tolerances or warranty terms. LILAND GLOBAL AL493LG is listed in this group.
The Standard Replacement section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS AL493 is listed in this group.
Listed part numbers: LILAND GLOBAL AL493LG and STANDARD MOTOR PRODUCTS AL493.
Distributor Rotor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UNITED MOTOR PRODUCTS Fits: 4.2L 254cid L8 | IR810 | 🇺🇸 US | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 4.2L 254cid L8 | AL99 | 🇺🇸 US | Mounting Hardware Included: No | View on Amazon |
| LILAND GLOBAL Fits: 4.2L 254cid L8 | AL99TBLG | 🇺🇸 US | Tan BrassPremium | View on Amazon |
| LILAND GLOBAL Fits: 4.2L 254cid L8 | AL99LG | 🇺🇸 US | Height: 1.0 In | View on Amazon |
| LILAND GLOBAL Fits: 4.2L 254cid L8 | AL85RBLG | 🇺🇸 US | Red BrassPremium | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL Fits: 4.3L 262cid L6 | AL99TBLG | 🇺🇸 US | Tan BrassPremium | View on Amazon |
| LILAND GLOBAL Fits: 4.3L 262cid L6 | AL99LG | 🇺🇸 US | Height: 1.0 In | View on Amazon |
| LILAND GLOBAL Fits: 4.3L 262cid L6 | AL85RBLG | 🇺🇸 US | Red BrassPremium | 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.
8 Distributor Rotor parts are listed for the 1951 Hudson Commodore Series, from LILAND GLOBAL, UNITED MOTOR PRODUCTS and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS AL99 carries the "Popular" badge.
Economy: 1 part, from UNITED MOTOR PRODUCTS. A representative part number is UNITED MOTOR PRODUCTS IR810.
The Standard Replacement section: 4 options from LILAND GLOBAL and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS AL99 is listed in this group.
3 ungrouped parts are not assigned to a grade, with the same engine-level match.
Listed part numbers: STANDARD MOTOR PRODUCTS AL99, UNITED MOTOR PRODUCTS IR810 and LILAND GLOBAL AL99TBLG, plus the other parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 4.2L 254cid L8 | UC14T | 🇺🇸 US | T-Series6 Volt | View on Amazon |
| HOLSTEIN Fits: 4.2L 254cid L8 | 2IGC0057 | 🇺🇸 US | View on Amazon | |
| SPECTRA PREMIUM Fits: 4.2L 254cid L8 | C660 | 🇺🇸 US | Pack | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 4.2L 254cid L8 | UC14 | 🇺🇸 US | Blue Streak6 Volt | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UNITED MOTOR PRODUCTS Fits: 4.2L 254cid L8 | C14 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: 4.2L 254cid L8 | 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.
6 Ignition Coil parts for the 1951 Hudson Commodore Series come from 5 brands — STANDARD MOTOR PRODUCTS, HOLSTEIN, SPECTRA PREMIUM and 2 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS UC14T.
The Economy section: 3 options from STANDARD MOTOR PRODUCTS, HOLSTEIN and SPECTRA PREMIUM. STANDARD MOTOR PRODUCTS UC14T is listed in this group.
Premium: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS UC14.
Standard Replacement: 2 parts, from UNITED MOTOR PRODUCTS and WELLS. A representative part number is UNITED MOTOR PRODUCTS C14.
Part numbers include STANDARD MOTOR PRODUCTS UC14T, HOLSTEIN 2IGC0057 and SPECTRA PREMIUM C660, among others listed above.
Ignition Coil Mounting Bracket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.2L 254cid L8 | CB6 | 🇺🇸 US | 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.
One part is listed for the 1951 Hudson Commodore Series — STANDARD MOTOR PRODUCTS CB6.
Ignition Conversion Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 4.2L 254cid L8 | 1A4115 | 🇺🇸 US | with Autolite Distributor # IGT-420412 Volt | View on Amazon |
| WELLS Fits: 4.2L 254cid L8 | 1A4213 | 🇺🇸 US | with Autolite Distributor # IGT-42046 Volt | View on Amazon |
| WELLS Fits: 4.3L 262cid L6 | 1A4108 | 🇺🇸 US | with Autolite Distributor # IAT12 Volt | View on Amazon |
This table covers the Ignition Conversion kits.
WELLS supplies the 3 Ignition Conversion Kit parts for the 1951 Hudson Commodore Series.
Part numbers include WELLS 1A4115, WELLS 1A4213 and WELLS 1A4108.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.030" and 0.032". Replacement brands in this table include CHAMPION, MOTORCRAFT and ACDELCO.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 4.2L 254cid L8 | C45L | 🇺🇸 US 🇨🇦 CA | ProfessionalConventional | View on Amazon |
| CHAMPION Fits: 4.2L 254cid L8 | 587 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| CHAMPION Fits: 4.2L 254cid L8 | 538 | 🇺🇸 US | Copper PlusPre-Set Gap: 0.025" | View on Amazon |
| MOTORCRAFT Fits: 4.2L 254cid L8 | SP473A | 🇺🇸 US | Copper Non-Resistor | View on Amazon |
| MOTORCRAFT Fits: 4.2L 254cid L8 | SP473AX | 🇺🇸 US | Copper Non-Resistor | 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 are listed for the 1951 Hudson Commodore Series, from CHAMPION, MOTORCRAFT and ACDELCO. ACDELCO C45L carries the "Popular" badge.
This group includes ACDELCO C45L, CHAMPION 587 and CHAMPION 538 and the remaining parts above.
Spark Plug Wire
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.2L 254cid L8 | 3800 | 🇺🇸 US | SetCore Material: Suppression Core | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.2L 254cid L8 | 23800 | 🇺🇸 US | Pro SeriesSet | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 4.2L 254cid L8 | 681 | 🇺🇸 US | Permashield-DelcoreSemi-Custom Wire Set | View on Amazon |
This table covers the Spark Plug wires.
3 Spark Plug Wire parts for the 1951 Hudson Commodore Series come from 2 brands — STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS.
Premium: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS 3800.
Standard Replacement: 2 parts, from STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS 23800.
Listed part numbers: STANDARD MOTOR PRODUCTS 3800, STANDARD MOTOR PRODUCTS 23800 and UNITED MOTOR PRODUCTS 681.
Buying Ignition Parts for a 1951 Hudson Commodore Series
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Some ignition parts fit every engine; others are engine-specific. Each row shows which engine(s) it fits.
- 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: Distributor Rotor and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 1951 Hudson Commodore Series?
Our catalog currently lists 31 ignition parts for the 1951 Hudson Commodore Series across 8 subcategories and 9 brands, covering both the 4.2L 254cid L8 and the 4.3L 262cid L6. Each part is matched to the engine(s) it fits.
Do ignition parts differ between 1951 Hudson Commodore Series engines?
Some do. 1 part fits every engine; the other 30 are engine-specific. Each row (and the filter at the top) shows which. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of ignition problems on a 1951 Hudson Commodore Series?
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 1951 Hudson Commodore Series?
Notes on this page include pre-set gaps of 0.025", 0.030" and 0.032". 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 1951 Hudson Commodore Series 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 1951 Hudson Commodore Series?
First match the engine — each row shows which engine(s) the part fits. 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 1951 Hudson Commodore Series
Ignition Parts for Other Hudson Commodore Series Years
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