51 Electrical parts are listed for the 1973 Checker Marathon, in 13 part types, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1973 Checker Marathon, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. 22 parts of the 51 listed are Starter Motor (8 parts), Alternator / Generator (7 parts) and Battery (7 parts). The other 10 part types cover the remaining 29 parts.
The 1973 Checker Marathon was sold with both the 4.1L 250cid L6 and the 5.7L 350cid V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 1973 Checker Marathon electrical parts are STANDARD MOTOR PRODUCTS (10 parts), FVP (7 parts) and PURE ENERGY (6 parts), plus 13 more brands. Quality grades include Remanufactured, Standard Replacement and Economy.
9 parts on this 1973 Checker Marathon page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 3342110 (Alternator / Generator) and ACDELCO 203FF (Alternator / Generator End Bearing). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Fits: 4.1L 250cid L6 | 7122103N | 🇺🇸 US 🇨🇦 CA | New | View on Amazon |
| PURE ENERGY Fits: 4.1L 250cid L6 | 7122103N | 🇺🇸 US 🇨🇦 CA | with Delco Alternator | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 4.1L 250cid L6 | 3342110 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| PURE ENERGY Popular Fits: 4.1L 250cid L6 | 7122103 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| FVP Fits: 4.1L 250cid L6 | 7122103 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| FVP Fits: 4.1L 250cid L6 | 7429112 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 4.1L 250cid L6 | 7429112 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
7 Alternator / Generator parts are listed for the 1973 Checker Marathon, from FVP, PURE ENERGY and ACDELCO. ACDELCO 3342110 carries the "Popular" badge.
In the New grade, FVP and PURE ENERGY supply 2 parts: brand-new units rather than rebuilt ones. A representative part number is FVP 7122103N.
In the Remanufactured grade, PURE ENERGY, FVP and ACDELCO supply 5 parts: factory-rebuilt units with new wear components. A representative part number is ACDELCO 3342110.
Listed part numbers: ACDELCO 3342110 and FVP 7122103N, plus the other parts above.
Alternator / Generator End Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: 4.1L 250cid L6 | RB62032RS | 🇺🇸 US 🇨🇦 CA | Two Seal Stylewith 55 Amps Alternator | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 4.1L 250cid L6 | 203FF | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA Fits: 4.1L 250cid L6 | NB203FF | 🇺🇸 US 🇨🇦 CA | with 2 Seal Designwith 55 Amps Alternator | View on Amazon |
| NATIONAL Fits: 4.1L 250cid L6 | 203FF | 🇺🇸 US 🇨🇦 CA | Two Seal Stylewith 55 Amps Alternator | View on Amazon |
| SKF Fits: 4.1L 250cid L6 | 62032RSJ | 🇺🇸 US 🇨🇦 CA | Drive Endwith 55 Amps Alternator | View on Amazon |
This table covers the bearings in the alternator housing. Typical signs include a growl that rises with speed, or play in the shaft or hub. Set preload the way the notes specify. A dry or crushed bearing fails quickly.
5 Alternator / Generator End Bearing parts for the 1973 Checker Marathon come from 5 brands — WJB / INMOTION PARTS, ACDELCO, BCA and 2 other brands. The "Popular" part is ACDELCO 203FF.
The Economy section lists 1 option from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS RB62032RS is listed in this group.
In the Standard Replacement grade, ACDELCO, BCA, NATIONAL and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is ACDELCO 203FF.
Listed part numbers: ACDELCO 203FF, WJB / INMOTION PARTS RB62032RS and BCA NB203FF, plus the other parts above.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 4.1L 250cid L6 | 9A78DT | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| FVP Popular Fits: 4.1L 250cid L6 | P24AGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 24 | View on Amazon |
| DEKA Fits: 4.1L 250cid L6 | 9A34 | 🇺🇸 US 🇨🇦 CA | IntimidatorAGM | View on Amazon |
| EXIDE Fits: 4.1L 250cid L6 | MX24 | 🇺🇸 US 🇨🇦 CA | Marathon MaxBCI Group 24 | View on Amazon |
| EXIDE Fits: 4.1L 250cid L6 | RF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| EXIDE Fits: 4.1L 250cid L6 | XRF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| FVP Fits: 4.1L 250cid L6 | P24RAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 24 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
7 Battery parts for the 1973 Checker Marathon come from 3 brands — EXIDE, DEKA and FVP. The "Popular" part is DEKA 9A78DT.
Part numbers include DEKA 9A78DT, FVP P24AGM and DEKA 9A34, among others listed above.
Battery Cable
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | A581 | 🇺🇸 US 🇨🇦 CA | PositiveBATTERY TO SWITCH | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 4.1L 250cid L6 | 4225N | 🇺🇸 US 🇨🇦 CA | 25" Cable4-Gauge | View on Amazon |
| UNITED MOTOR PRODUCTS Fits: 4.1L 250cid L6 | 4232 | 🇺🇸 US 🇨🇦 CA | 32" Cable4-Gauge | View on Amazon |
This table covers the positive and ground cables that run from the battery. Typical signs include a stretched or frayed cable, or a control that no longer reaches the end of its travel. Route the new cable through the same clips. A kinked cable binds and fails early.
3 Battery Cable parts are listed for the 1973 Checker Marathon, from UNITED MOTOR PRODUCTS and STANDARD MOTOR PRODUCTS.
Part numbers include STANDARD MOTOR PRODUCTS A581, UNITED MOTOR PRODUCTS 4225N and UNITED MOTOR PRODUCTS 4232.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Fits: 4.1L 250cid L6 | 00350 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal | View on Amazon |
| DEKA Fits: 4.1L 250cid L6 | 01056 | 🇺🇸 US 🇨🇦 CA | Top Post Terminal Lead Free | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
2 Battery Terminal parts for the 1973 Checker Marathon come from DEKA.
This group includes DEKA 00350 and DEKA 01056.
Flasher
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 4.1L 250cid L6 | EFL552 | 🇺🇸 US 🇨🇦 CA | Electronic Flasher, Hazard Warningwith Metal Housing | View on Amazon |
| HOLSTEIN Fits: 4.1L 250cid L6 | 2RSW0035 | 🇺🇸 US 🇨🇦 CA | with Metal Housingwith 2 Blade Terminal | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | EFL1 | 🇺🇸 US 🇨🇦 CA | Electronic Flasher, Hazard Warningwith Plastic Housing | View on Amazon |
| TRIDON / NOVITA Fits: 4.1L 250cid L6 | LF12 | 🇺🇸 US 🇨🇦 CA | Loud Flasher2 Terminal | View on Amazon |
| TRIDON / NOVITA Fits: 4.1L 250cid L6 | LF12K | 🇺🇸 US 🇨🇦 CA | Loud Flasher | View on Amazon |
This table covers the flasher units that blink the turn signals and hazards.
5 Flasher parts for the 1973 Checker Marathon come from 3 brands — STANDARD MOTOR PRODUCTS, TRIDON / NOVITA and HOLSTEIN. The "Popular" part is STANDARD MOTOR PRODUCTS EFL552.
Part numbers include STANDARD MOTOR PRODUCTS EFL552, HOLSTEIN 2RSW0035 and STANDARD MOTOR PRODUCTS EFL1, among others listed above.
Horn
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | HN20 | 🇺🇸 US 🇨🇦 CA | Low Tone | View on Amazon |
| WELLS Fits: 4.1L 250cid L6 | 1H1001 | 🇺🇸 US 🇨🇦 CA | Low Note HornUniversal mount for 12 Volt negative ground systems. | View on Amazon |
This table covers the horns mounted in the front of the vehicle.
2 Horn parts for the 1973 Checker Marathon come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Listed part numbers: STANDARD MOTOR PRODUCTS HN20 and WELLS 1H1001.
Starter Brush
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | RX60 | 🇺🇸 US 🇨🇦 CA | Width (In): 3/4 | View on Amazon |
| WELLS Fits: 4.1L 250cid L6 | 5A1011 | 🇺🇸 US 🇨🇦 CA | with Delco Starter | View on Amazon |
This table covers the brushes inside the starter motor.
2 Starter Brush parts for the 1973 Checker Marathon come from 2 brands — STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include STANDARD MOTOR PRODUCTS RX60 and WELLS 5A1011.
Starter Drive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 4.1L 250cid L6 | SDC1005 | 🇺🇸 US 🇨🇦 CA | New Starter DriveDELCO | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | SDN1A | 🇺🇸 US 🇨🇦 CA | Direct OE Replacement Number of Gear Teeth 9 | View on Amazon |
| WELLS Fits: 4.1L 250cid L6 | 2K1000 | 🇺🇸 US 🇨🇦 CA | with Delco Starter | View on Amazon |
This table covers the starter drives that engage the flywheel ring gear.
3 Starter Drive parts for the 1973 Checker Marathon come from 3 brands — FAMOUS BRAND, STANDARD MOTOR PRODUCTS and WELLS.
Part numbers include FAMOUS BRAND SDC1005, STANDARD MOTOR PRODUCTS SDN1A and WELLS 2K1000.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PURE ENERGY Popular Fits: 4.1L 250cid L6 | 3838SN | 🇺🇸 US | Automatic trans. | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 4.1L 250cid L6 | 3361860 | 🇺🇸 US 🇨🇦 CA | GoldRemanufactured | View on Amazon |
| ACDELCO Fits: 4.1L 250cid L6 | 3361849 | 🇺🇸 US 🇨🇦 CA | Gold / ProfessionalRemanufactured | View on Amazon |
| FVP Fits: 4.1L 250cid L6 | 3635S | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| FVP Fits: 4.1L 250cid L6 | 3664S | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| MARELLI Fits: 4.1L 250cid L6 | RMMSR00109 | 🇺🇸 US | Reman. | View on Amazon |
| PURE ENERGY Fits: 4.1L 250cid L6 | 3635S | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| PURE ENERGY Fits: 4.1L 250cid L6 | 3664S | 🇺🇸 US | Remanufactured | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
8 Starter Motor parts are listed for the 1973 Checker Marathon, from PURE ENERGY, ACDELCO, FVP and 1 other brand. PURE ENERGY 3838SN carries the "Popular" badge.
New: 1 part, from PURE ENERGY. A representative part number is PURE ENERGY 3838SN.
Remanufactured: 7 parts, from ACDELCO, FVP, PURE ENERGY and 1 other brand. A representative part number is ACDELCO 3361860.
Listed part numbers: PURE ENERGY 3838SN, ACDELCO 3361860 and ACDELCO 3361849, plus the other parts above.
Starter Solenoid
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 4.1L 250cid L6 | 84016 | 🇺🇸 US 🇨🇦 CA | New Solenoid | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | SS200T | 🇺🇸 US 🇨🇦 CA | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular Fits: 4.1L 250cid L6 | SS200 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS Fits: 4.1L 250cid L6 | 1M1027A | 🇺🇸 US 🇨🇦 CA | Premium | View on Amazon |
| WELLS Fits: 4.1L 250cid L6 | 1M1027 | 🇺🇸 US 🇨🇦 CA | Mounting Hardware Included: YES | View on Amazon |
This table covers the Starter solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.
5 Starter Solenoid parts are listed for the 1973 Checker Marathon, from STANDARD MOTOR PRODUCTS, WELLS and FAMOUS BRAND. STANDARD MOTOR PRODUCTS SS200 carries the "Popular" badge.
Economy: 2 parts, from FAMOUS BRAND and STANDARD MOTOR PRODUCTS. A representative part number is FAMOUS BRAND 84016.
The Standard Replacement section: 3 options from WELLS and STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS SS200 is listed in this group.
Part numbers include STANDARD MOTOR PRODUCTS SS200, FAMOUS BRAND 84016 and STANDARD MOTOR PRODUCTS SS200T, among others listed above.
Starter Solenoid Repair Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | SS408K | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Starter Solenoid repair kits.
This group shows a single part: STANDARD MOTOR PRODUCTS SS408K.
Voltage Regulator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 | VR114 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the regulators that control alternator output voltage.
This group shows a single part: STANDARD MOTOR PRODUCTS VR114.
Buying Electrical Parts for a 1973 Checker Marathon
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Every electrical 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Starter Motor and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 1973 Checker Marathon?
Our catalog currently lists 51 electrical parts for the 1973 Checker Marathon across 13 subcategories and 16 brands, covering both the 4.1L 250cid L6 and the 5.7L 350cid V8. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 1973 Checker Marathon engines?
Yes. Every electrical 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 electrical problems on a 1973 Checker Marathon?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 1973 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 1973 Checker Marathon?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1973 Checker Marathon
Electrical Parts for Other Checker Marathon Years
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