58 Ignition parts are listed for the 1978 Checker Marathon, in 8 part types, covering all 3 engine options (4.1L 250cid L6, 5.0L 305cid V8 and 5.7L 350cid V8). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1978 Checker Marathon, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 34 parts of the 58 listed are Distributor Cap (14 parts), Ignition Coil (12 parts) and Distributor Rotor (8 parts). The other 5 part types cover the remaining 24 parts.
The 1978 Checker Marathon was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1978 Checker Marathon ignition parts are WELLS (11 parts), STANDARD MOTOR PRODUCTS (9 parts) and ACDELCO (6 parts), plus 16 more brands. Quality grades include Standard Replacement, Economy and Premium.
11 parts on this 1978 Checker Marathon page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SKP SKDIGM08 (Distributor) and ACDELCO D336X (Distributor Cap). Click any part number to see every vehicle that part fits.
Distributor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 5.0L 305cid V8 | SKDIGM08 | 🇺🇸 US 🇨🇦 CA | Electronic DistributorSupplied with Cap and Rotor | View on Amazon |
| CARDONE Fits: 5.0L 305cid V8 | 841895 | 🇺🇸 US 🇨🇦 CA | Includes Cap & Rotor | View on Amazon |
| ULTRA-POWER Fits: 5.0L 305cid V8 | GM08 | 🇺🇸 US 🇨🇦 CA | 2WD160HP | View on Amazon |
| WAI GLOBAL Fits: 5.0L 305cid V8 | DST1895 | 🇺🇸 US 🇨🇦 CA | Includes Cap & Rotor | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| CARDONE Fits: 5.0L 305cid V8 | 301895 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the distributors that route spark.
5 Distributor parts for the 1978 Checker Marathon come from 4 brands — CARDONE, SKP, ULTRA-POWER and 1 other brand. The "Popular" part is SKP SKDIGM08.
The New section lists 4 options from SKP, CARDONE, ULTRA-POWER and 1 other brand — brand-new units rather than rebuilt ones. SKP SKDIGM08 is listed in this group.
The Remanufactured section lists 1 option from CARDONE — factory-rebuilt units with new wear components. CARDONE 301895 is listed in this group.
This group includes SKP SKDIGM08, CARDONE 841895 and ULTRA-POWER GM08 and the remaining parts above.
Distributor Cap
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 5.0L 305cid V8 | 24052 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | DR450T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL Fits: 5.0L 305cid V8 | DR450YBLG | 🇺🇸 US 🇨🇦 CA | Yellow Brass | View on Amazon |
| LILAND GLOBAL Fits: 5.0L 305cid V8 | DR450BLBLG | 🇺🇸 US 🇨🇦 CA | Blue Brass | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 5.0L 305cid V8 | DC800X | 🇺🇸 US 🇨🇦 CA | with Blue Brass Contacts | View on Amazon |
| WELLS Fits: 5.0L 305cid V8 | 5D1058A | 🇺🇸 US 🇨🇦 CA | Premium | View on Amazon |
| WELLS Fits: 5.0L 305cid V8 | 3D1045A | 🇺🇸 US 🇨🇦 CA | Includes RotorPremium | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 5.0L 305cid V8 | D336X | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| ACDELCO Popular Fits: 5.0L 305cid V8 | D559A | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| WELLS Popular Fits: 5.0L 305cid V8 | 3D1045 | 🇺🇸 US 🇨🇦 CA | Includes Rotor | View on Amazon |
| LILAND GLOBAL Fits: 5.0L 305cid V8 | DR450TLG | 🇺🇸 US 🇨🇦 CA | Black Aluminum | View on Amazon |
| LILAND GLOBAL Fits: 5.0L 305cid V8 | DR450YALG | 🇺🇸 US 🇨🇦 CA | Yellow Aluminum | View on Amazon |
| WALKER PRODUCTS Fits: 5.0L 305cid V8 | 9251005 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 5.0L 305cid V8 | 5D1058 | 🇺🇸 US 🇨🇦 CA | Distributor Cap Contacts Material: Aluminum | 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.
14 Distributor Cap parts for the 1978 Checker Marathon come from 7 brands — LILAND GLOBAL, WELLS, ACDELCO and 4 other brands. The "Popular" part is ACDELCO D336X.
The Economy section lists 2 options from FAMOUS BRAND and STANDARD MOTOR PRODUCTS — the catalog's value-priced group. FAMOUS BRAND 24052 is listed in this group.
In the Premium grade, LILAND GLOBAL, WELLS and UNITED MOTOR PRODUCTS supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is LILAND GLOBAL DR450YBLG.
In the Standard Replacement grade, ACDELCO, WELLS, LILAND GLOBAL and 1 other brand supply 7 parts: built to original-equipment specification. A representative part number is ACDELCO D336X.
Distributor Cap Cover
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | DR443T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 5.0L 305cid V8 | 1875960X | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| WELLS Fits: 5.0L 305cid V8 | 4D1000A | 🇺🇸 US 🇨🇦 CA | Premium | View on Amazon |
| WELLS Fits: 5.0L 305cid V8 | 4D1000 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Distributor Cap covers.
4 Distributor Cap Cover parts are listed for the 1978 Checker Marathon, from WELLS, STANDARD MOTOR PRODUCTS and ACDELCO.
Economy: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS DR443T.
The Standard Replacement section: 3 options from WELLS and ACDELCO. ACDELCO 1875960X is listed in this group.
This group includes STANDARD MOTOR PRODUCTS DR443T, ACDELCO 1875960X and WELLS 4D1000A and the remaining parts above.
Distributor Mounting Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Fits: 5.0L 305cid V8 | ADM1402 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| FEL-PRO Fits: 5.0L 305cid V8 | 70194 | 🇺🇸 US 🇨🇦 CA | Thickness: 0.053 In | View on Amazon |
| MAHLE / CLEVITE Fits: 5.0L 305cid V8 | B25934 | 🇺🇸 US 🇨🇦 CA | Paper | View on Amazon |
| VICTOR REINZ Fits: 5.0L 305cid V8 | 711350200 | 🇺🇸 US 🇨🇦 CA | Inside Diameter: 1.280 In | 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.
4 Distributor Mounting Gasket parts for the 1978 Checker Marathon come from 4 brands — APEX, FEL-PRO, MAHLE / CLEVITE and 1 other brand.
Part numbers include APEX ADM1402, FEL-PRO 70194 and MAHLE / CLEVITE B25934, among others listed above.
Distributor Pickup Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | LX302T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | LX302 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 5.0L 305cid V8 | 4P1210 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Distributor Pickup coils. Typical signs include a misfire that follows one cylinder, or a snap in damp weather. Swap with a neighbor to confirm, and replace a torn boot with the coil.
3 Distributor Pickup Coil parts are listed for the 1978 Checker Marathon, from STANDARD MOTOR PRODUCTS and WELLS.
Economy: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS LX302T.
The Standard Replacement section: 2 options from STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS LX302 is listed in this group.
Listed part numbers: STANDARD MOTOR PRODUCTS LX302T, STANDARD MOTOR PRODUCTS LX302 and WELLS 4P1210.
Distributor Rotor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | DR318T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 5.0L 305cid V8 | DR448 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 5.0L 305cid V8 | 4R1064A | 🇺🇸 US 🇨🇦 CA | Premium | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 5.0L 305cid V8 | D468 | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| ACDELCO Popular Fits: 5.0L 305cid V8 | D448X | 🇺🇸 US 🇨🇦 CA | Professional | View on Amazon |
| WALKER PRODUCTS Fits: 5.0L 305cid V8 | 9261006 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 5.0L 305cid V8 | 4R1064 | 🇺🇸 US 🇨🇦 CA | Contact Terminal Material: Aluminum | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LILAND GLOBAL Fits: 5.0L 305cid V8 | DR318RBLG | 🇺🇸 US 🇨🇦 CA | Color: RedBody Material: PBT | 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 for the 1978 Checker Marathon come from 6 brands — WELLS, ACDELCO, STANDARD MOTOR PRODUCTS and 3 other brands. The "Popular" part is ACDELCO D468.
The Economy section: 2 options from STANDARD MOTOR PRODUCTS and UNITED MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS DR318T is listed in this group.
Premium: 1 part, from WELLS. A representative part number is WELLS 4R1064A.
Standard Replacement: 4 parts, from ACDELCO, WALKER PRODUCTS and WELLS. A representative part number is ACDELCO D468.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include ACDELCO D468, STANDARD MOTOR PRODUCTS DR318T and UNITED MOTOR PRODUCTS DR448, among others listed above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular Fits: 5.0L 305cid V8 | SKDR31T | 🇺🇸 US 🇨🇦 CA | Coil Pack | View on Amazon |
| FVP Fits: 5.0L 305cid V8 | DR31F | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN Fits: 5.0L 305cid V8 | 2IGC0022 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM Fits: 5.0L 305cid V8 | C614 | 🇺🇸 US 🇨🇦 CA | Pack | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | DR31T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| WAI GLOBAL Fits: 5.0L 305cid V8 | CDR31 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 5.0L 305cid V8 | DR31 | 🇺🇸 US 🇨🇦 CA | Blue Streak | View on Amazon |
| ASTEMO / HITACHI Fits: 5.0L 305cid V8 | IGC0100 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 5.0L 305cid V8 | 5C1024 | 🇺🇸 US 🇨🇦 CA | Requires External Resistor: YES | View on Amazon |
| ACDELCO Fits: 5.0L 305cid V8 | D504A | 🇺🇸 US 🇨🇦 CA | ProfessionalDoes Not Include Contact Shown in Images | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 5.0L 305cid V8 | C530 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS Fits: 5.0L 305cid V8 | 9201003 | 🇺🇸 US 🇨🇦 CA | Single Coil | 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.
12 Ignition Coil parts are listed for the 1978 Checker Marathon, from STANDARD MOTOR PRODUCTS, SKP, FVP and 8 other brands. SKP SKDR31T carries the "Popular" badge.
Economy: 6 parts, from SKP, FVP, HOLSTEIN and 3 other brands. A representative part number is SKP SKDR31T.
The Premium section: 2 options from STANDARD MOTOR PRODUCTS and ASTEMO / HITACHI. STANDARD MOTOR PRODUCTS DR31 is listed in this group.
The Standard Replacement section: 4 options from WELLS, ACDELCO, UNITED MOTOR PRODUCTS and 1 other brand. WELLS 5C1024 is listed in this group.
Ignition Control Module (ICM)
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 5.0L 305cid V8 | LX301T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
| ULTRA-POWER Fits: 5.0L 305cid V8 | LX301 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Popular Fits: 5.0L 305cid V8 | 6H1013 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: No | View on Amazon |
| HOLSTEIN Fits: 5.0L 305cid V8 | 2IGM0036 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 5.0L 305cid V8 | LX301 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS Fits: 5.0L 305cid V8 | M1906 | 🇺🇸 US 🇨🇦 CA | OE Design | View on Amazon |
| WAI GLOBAL Fits: 5.0L 305cid V8 | DM1906 | 🇺🇸 US 🇨🇦 CA | 2/2 Pin ConnectorStandard Unit | View on Amazon |
| WAI GLOBAL Fits: 5.0L 305cid V8 | DM1906HD | 🇺🇸 US 🇨🇦 CA | 2/2 Pin ConnectorHeavy Duty Unit | View on Amazon |
This table covers the Ignition control modules.
8 Ignition Control Module (ICM) parts are listed for the 1978 Checker Marathon, from STANDARD MOTOR PRODUCTS, WAI GLOBAL, ULTRA-POWER and 3 other brands. STANDARD MOTOR PRODUCTS LX301T carries the "Popular" badge.
Economy: 2 parts, from STANDARD MOTOR PRODUCTS and ULTRA-POWER. A representative part number is STANDARD MOTOR PRODUCTS LX301T.
The Standard Replacement section: 6 options from WAI GLOBAL, WELLS, HOLSTEIN and 2 other brands. WELLS 6H1013 is listed in this group.
Part numbers include STANDARD MOTOR PRODUCTS LX301T, ULTRA-POWER LX301 and WELLS 6H1013, among others listed above.
Buying Ignition Parts for a 1978 Checker Marathon
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Match the engine first. Every ignition part here is 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 Cap and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 1978 Checker Marathon?
Our catalog currently lists 58 ignition parts for the 1978 Checker Marathon across 8 subcategories and 19 brands, covering all 3 engine options (4.1L 250cid L6, 5.0L 305cid V8 and 5.7L 350cid V8). Each part is matched to the engine(s) it fits.
Do ignition parts differ between 1978 Checker Marathon engines?
Yes. Every ignition part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. 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 1978 Checker Marathon?
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 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 1978 Checker Marathon 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 1978 Checker Marathon?
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 1978 Checker Marathon
Ignition Parts for Other Checker Marathon Years
Switch vehicle or jump to a subcategory
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.