1973 Checker Marathon Electrical Parts

Engine:

Showing parts for every engine. Select an engine to see only what fits.

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.

Alternator / Generator

New

Brand Part Number Markets Notes Buy
FVP Fits: 4.1L 250cid L6 7122103N
🇺🇸 US 🇨🇦 CA
New
Fitment notes — FVP 7122103N
New
with Delco Alternator
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PURE ENERGY Fits: 4.1L 250cid L6 7122103N
🇺🇸 US 🇨🇦 CA
with Delco Alternator
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Remanufactured

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.1L 250cid L6 3342110
🇺🇸 US 🇨🇦 CA
GoldRemanufactured
Fitment notes — ACDELCO 3342110
GoldRemanufactured55 Amp
with Delco AlternatorExternal Regulator10DNClock: 3:0055 Amps
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PURE ENERGY Popular Fits: 4.1L 250cid L6 7122103
🇺🇸 US 🇨🇦 CA
Remanufactured
Fitment notes — PURE ENERGY 7122103
Remanufactured
with Delco Alternator55 Amps
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FVP Fits: 4.1L 250cid L6 7122103
🇺🇸 US 🇨🇦 CA
Remanufactured
Fitment notes — FVP 7122103
Remanufactured
with Delco Alternator55 Amps
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FVP Fits: 4.1L 250cid L6 7429112
🇺🇸 US 🇨🇦 CA
Remanufactured
Fitment notes — FVP 7429112
Remanufactured
with Motorola Alternator37 A Amps
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PURE ENERGY Fits: 4.1L 250cid L6 7429112
🇺🇸 US 🇨🇦 CA
Remanufactured
Fitment notes — PURE ENERGY 7429112
Remanufactured
with Motorola Alternator37 Amps
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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.

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
Fitment notes — WJB / INMOTION PARTS RB62032RS
Two Seal Stylewith 55 Amps AlternatorDrive End
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Standard Replacement

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.1L 250cid L6 203FF
🇺🇸 US 🇨🇦 CA
Gold
Fitment notes — ACDELCO 203FF
Gold
Drive End55 Amps
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BCA Fits: 4.1L 250cid L6 NB203FF
🇺🇸 US 🇨🇦 CA
with 2 Seal Designwith 55 Amps Alternator
Fitment notes — BCA NB203FF
with 2 Seal Designwith 55 Amps AlternatorDrive End
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NATIONAL Fits: 4.1L 250cid L6 203FF
🇺🇸 US 🇨🇦 CA
Two Seal Stylewith 55 Amps Alternator
Fitment notes — NATIONAL 203FF
Two Seal Stylewith 55 Amps AlternatorDrive End
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SKF Fits: 4.1L 250cid L6 62032RSJ
🇺🇸 US 🇨🇦 CA
Drive Endwith 55 Amps Alternator
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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.

Battery

Brand Part Number Markets Notes Buy
DEKA Popular Fits: 4.1L 250cid L6 9A78DT
🇺🇸 US 🇨🇦 CA
IntimidatorAGM
Fitment notes — DEKA 9A78DT
IntimidatorAGMBCI Group 34/78750 CCALength X Width X Height: 10.75 In x 6.875 In x 8 In
Supplied adapter May be required For proper Fit.
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FVP Popular Fits: 4.1L 250cid L6 P24AGM
🇺🇸 US 🇨🇦 CA
Platinum AGMBCI Group: 24
Fitment notes — FVP P24AGM
Platinum AGMBCI Group: 24CCA: 750140 Minute Reserve Capacity(LxWxH) 10.2" x 6.8" x 7.8"
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DEKA Fits: 4.1L 250cid L6 9A34
🇺🇸 US 🇨🇦 CA
IntimidatorAGM
Fitment notes — DEKA 9A34
IntimidatorAGMBCI Group 34750 CCALength X Width X Height: 10.75 In x 6.875 In x 7.75 In
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EXIDE Fits: 4.1L 250cid L6 MX24
🇺🇸 US 🇨🇦 CA
Marathon MaxBCI Group 24
Fitment notes — EXIDE MX24
Marathon MaxBCI Group 24CCA: 700120 Minute Reserve Capacity(LxWxH) 10.19" x 6.75" x 8.63"
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EXIDE Fits: 4.1L 250cid L6 RF31D
🇺🇸 US 🇨🇦 CA
RoadforceBCI Group 31
Fitment notes — EXIDE RF31D
RoadforceBCI Group 31CCA: 700200 Minute Reserve Capacity(LxWxH) 13" x 6.81" x 9.44"
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EXIDE Fits: 4.1L 250cid L6 XRF31D
🇺🇸 US 🇨🇦 CA
RoadforceBCI Group 31
Fitment notes — EXIDE XRF31D
RoadforceBCI Group 31CCA: 950200 Minute Reserve Capacity(LxWxH) 13" x 6.81" x 9.44"
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FVP Fits: 4.1L 250cid L6 P24RAGM
🇺🇸 US 🇨🇦 CA
Platinum AGMBCI Group: 24
Fitment notes — FVP P24RAGM
Platinum AGMBCI Group: 24CCA: 750140 Minute Reserve Capacity(LxWxH) 10.2" x 6.8" x 7.8"
Reverse Terminal
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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.

Battery Cable

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 A581
🇺🇸 US 🇨🇦 CA
PositiveBATTERY TO SWITCH
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UNITED MOTOR PRODUCTS Fits: 4.1L 250cid L6 4225N
🇺🇸 US 🇨🇦 CA
25" Cable4-Gauge
Fitment notes — UNITED MOTOR PRODUCTS 4225N
25" Cable4-GaugeTop Mount
Negative
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UNITED MOTOR PRODUCTS Fits: 4.1L 250cid L6 4232
🇺🇸 US 🇨🇦 CA
32" Cable4-Gauge
Fitment notes — UNITED MOTOR PRODUCTS 4232
32" Cable4-GaugeTop MountTop Mount 32 inches
Positive
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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.

Battery Terminal

Brand Part Number Markets Notes Buy
DEKA Fits: 4.1L 250cid L6 00350
🇺🇸 US 🇨🇦 CA
Top Post Terminal
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DEKA Fits: 4.1L 250cid L6 01056
🇺🇸 US 🇨🇦 CA
Top Post Terminal Lead Free
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This table covers the terminals and clamps that connect cables to the battery posts.

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
Fitment notes — STANDARD MOTOR PRODUCTS EFL552
Electronic Flasher, Hazard Warningwith Metal Housingwith 2 Blade TerminalsTurn Signal
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HOLSTEIN Fits: 4.1L 250cid L6 2RSW0035
🇺🇸 US 🇨🇦 CA
with Metal Housingwith 2 Blade Terminal
Fitment notes — HOLSTEIN 2RSW0035
with Metal Housingwith 2 Blade TerminalTurn Signal
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STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 EFL1
🇺🇸 US 🇨🇦 CA
Electronic Flasher, Hazard Warningwith Plastic Housing
Fitment notes — STANDARD MOTOR PRODUCTS EFL1
Electronic Flasher, Hazard Warningwith Plastic Housingwith 2 Blade TerminalsTurn Signal
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TRIDON / NOVITA Fits: 4.1L 250cid L6 LF12
🇺🇸 US 🇨🇦 CA
Loud Flasher2 Terminal
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TRIDON / NOVITA Fits: 4.1L 250cid L6 LF12K
🇺🇸 US 🇨🇦 CA
Loud Flasher
Fitment notes — TRIDON / NOVITA LF12K
Loud Flasher
Kit
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This table covers the flasher units that blink the turn signals and hazards.

Horn

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 HN20
🇺🇸 US 🇨🇦 CA
Low Tone
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WELLS Fits: 4.1L 250cid L6 1H1001
🇺🇸 US 🇨🇦 CA
Low Note HornUniversal mount for 12 Volt negative ground systems.
Fitment notes — WELLS 1H1001
Low Note HornUniversal mount for 12 Volt negative ground systems.
Low Note
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This table covers the horns mounted in the front of the vehicle.

Starter Brush

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 RX60
🇺🇸 US 🇨🇦 CA
Width (In): 3/4
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WELLS Fits: 4.1L 250cid L6 5A1011
🇺🇸 US 🇨🇦 CA
with Delco Starter
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This table covers the brushes inside the starter motor.

Starter Drive

Brand Part Number Markets Notes Buy
FAMOUS BRAND Fits: 4.1L 250cid L6 SDC1005
🇺🇸 US 🇨🇦 CA
New Starter DriveDELCO
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STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 SDN1A
🇺🇸 US 🇨🇦 CA
Direct OE Replacement Number of Gear Teeth 9
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WELLS Fits: 4.1L 250cid L6 2K1000
🇺🇸 US 🇨🇦 CA
with Delco Starter
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This table covers the starter drives that engage the flywheel ring gear.

Starter Motor

New

Brand Part Number Markets Notes Buy
PURE ENERGY Popular Fits: 4.1L 250cid L6 3838SN
🇺🇸 US
Automatic trans.
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Remanufactured

Brand Part Number Markets Notes Buy
ACDELCO Popular Fits: 4.1L 250cid L6 3361860
🇺🇸 US 🇨🇦 CA
GoldRemanufactured
Fitment notes — ACDELCO 3361860
GoldRemanufactured
Automatic trans.10MT
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ACDELCO Fits: 4.1L 250cid L6 3361849
🇺🇸 US 🇨🇦 CA
Gold / ProfessionalRemanufactured
Fitment notes — ACDELCO 3361849
Gold / ProfessionalRemanufactured
Manual trans.From 11/9210MT(4 Pin)9
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FVP Fits: 4.1L 250cid L6 3635S
🇺🇸 US 🇨🇦 CA
Remanufactured
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FVP Fits: 4.1L 250cid L6 3664S
🇺🇸 US 🇨🇦 CA
Remanufactured
Fitment notes — FVP 3664S
Remanufactured
Automatic trans.
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MARELLI Fits: 4.1L 250cid L6 RMMSR00109
🇺🇸 US
Reman.
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PURE ENERGY Fits: 4.1L 250cid L6 3635S
🇺🇸 US 🇨🇦 CA
Remanufactured
Fitment notes — PURE ENERGY 3635S
Remanufactured
Manual trans.
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PURE ENERGY Fits: 4.1L 250cid L6 3664S
🇺🇸 US
Remanufactured
Fitment notes — PURE ENERGY 3664S
Remanufactured
Automatic trans.
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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.

Starter Solenoid

Economy

Brand Part Number Markets Notes Buy
FAMOUS BRAND Fits: 4.1L 250cid L6 84016
🇺🇸 US 🇨🇦 CA
New Solenoid
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STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 SS200T
🇺🇸 US 🇨🇦 CA
T-Series
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Standard Replacement

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Popular Fits: 4.1L 250cid L6 SS200
🇺🇸 US 🇨🇦 CA
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WELLS Fits: 4.1L 250cid L6 1M1027A
🇺🇸 US 🇨🇦 CA
Premium
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WELLS Fits: 4.1L 250cid L6 1M1027
🇺🇸 US 🇨🇦 CA
Mounting Hardware Included: YES
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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.

Starter Solenoid Repair Kit

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 SS408K
🇺🇸 US 🇨🇦 CA
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This table covers the Starter Solenoid repair kits.

Voltage Regulator

Brand Part Number Markets Notes Buy
STANDARD MOTOR PRODUCTS Fits: 4.1L 250cid L6 VR114
🇺🇸 US 🇨🇦 CA
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This table covers the regulators that control alternator output voltage.

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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