23 Electrical parts are listed for the 1963 Checker Marathon, in 5 part types, covering both the 3.7L 226cid L6 and the 5.2L 318cid V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 1963 Checker Marathon, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Alternator / Generator End Bearing (12 parts), Battery (5 parts) and Voltage Regulator (3 parts). The other 2 part types cover the remaining 3 parts.
The 1963 Checker Marathon was sold with both the 3.7L 226cid L6 and the 5.2L 318cid V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
9 brands supply electrical parts for the 1963 Checker Marathon, led by DEKA (4 parts), WJB / INMOTION PARTS (3 parts) and BCA (3 parts), plus 6 more brands. Quality grades include Standard Replacement and Economy.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1963 Checker Marathon. 4 parts have it, including WJB / INMOTION PARTS RB6203 (Alternator / Generator End Bearing) and DEKA 9A78DT (Battery). Each part number opens a page with every vehicle that part fits.
Alternator / Generator End Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: 3.7L 226cid L6 | RB6203 | 🇺🇸 US | Fits Except Heavy DutyCommutator Endor Open Design | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.7L 226cid L6 | RB6303 | 🇺🇸 US | Heavy DutyCommutator End | View on Amazon |
| WJB / INMOTION PARTS Fits: 3.7L 226cid L6 | RB6204 | 🇺🇸 US | Heavy DutyDrive End | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular Fits: 3.7L 226cid L6 | NB203 | 🇺🇸 US | Fits Except Heavy DutyDrive Endor Except Heavy Duty | View on Amazon |
| NATIONAL Popular Fits: 3.7L 226cid L6 | 203 | 🇺🇸 US | Fits Except Heavy DutyCommutator Endor Except Heavy Duty | View on Amazon |
| BCA Fits: 3.7L 226cid L6 | NB204 | 🇺🇸 US | Heavy DutyDrive End | View on Amazon |
| BCA Fits: 3.7L 226cid L6 | NB303 | 🇺🇸 US | Heavy DutyCommutator End | View on Amazon |
| NATIONAL Fits: 3.7L 226cid L6 | 204 | 🇺🇸 US | Heavy DutyDrive End | View on Amazon |
| NATIONAL Fits: 3.7L 226cid L6 | 303 | 🇺🇸 US | Heavy DutyCommutator End | View on Amazon |
| SKF Fits: 3.7L 226cid L6 | 6204J | 🇺🇸 US | Drive EndHeavy Duty | View on Amazon |
| SKF Fits: 3.7L 226cid L6 | 6203J | 🇺🇸 US | Commutator Endwith 60 Amps Alternator | View on Amazon |
| SKF Fits: 3.7L 226cid L6 | 6303J | 🇺🇸 US | RearHeavy Duty | 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.
12 Alternator / Generator End Bearing parts are listed for the 1963 Checker Marathon, from WJB / INMOTION PARTS, BCA, NATIONAL and 1 other brand. WJB / INMOTION PARTS RB6203 carries the "Popular" badge.
In the Economy grade, WJB / INMOTION PARTS supplies 3 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS RB6203.
The Standard Replacement section lists 9 options from BCA, NATIONAL and SKF — built to original-equipment specification. BCA NB203 is listed in this group.
Battery
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Popular Fits: 3.7L 226cid L6 | 9A78DT | 🇺🇸 US | IntimidatorAGM | View on Amazon |
| DEKA Fits: 3.7L 226cid L6 | 9A34 | 🇺🇸 US | IntimidatorAGM | View on Amazon |
| EXIDE Fits: 3.7L 226cid L6 | MX24 | 🇺🇸 US | Marathon MaxBCI Group 24 | View on Amazon |
| FVP Fits: 3.7L 226cid L6 | P24AGM | 🇺🇸 US | Platinum AGMBCI Group: 24 | View on Amazon |
| FVP Fits: 3.7L 226cid L6 | P24RAGM | 🇺🇸 US | 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.
5 Battery parts are listed for the 1963 Checker Marathon, from DEKA, FVP and EXIDE. DEKA 9A78DT carries the "Popular" badge.
Listed part numbers: DEKA 9A78DT, DEKA 9A34 and EXIDE MX24, plus the other parts above.
Battery Terminal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DEKA Fits: 3.7L 226cid L6 | 00350 | 🇺🇸 US | Town CustomTop Post Terminal | View on Amazon |
| DEKA Fits: 3.7L 226cid L6 | 01056 | 🇺🇸 US | Town CustomTop Post Terminal Lead Free | View on Amazon |
This table covers the terminals and clamps that connect cables to the battery posts.
DEKA supplies both parts for the 1963 Checker Marathon.
Listed part numbers: DEKA 00350 and DEKA 01056.
Starter Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: 3.7L 226cid L6 | 7A1008 | 🇺🇸 US | Drive EndStarter Number MDU-7002 | View on Amazon |
This table covers the Starter bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
One part is listed for the 1963 Checker Marathon — WELLS 7A1008.
Voltage Regulator
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.7L 226cid L6 | VR101T | 🇺🇸 US | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 3.7L 226cid L6 | VR101 | 🇺🇸 US | View on Amazon | |
| WELLS Fits: 3.7L 226cid L6 | 1V1067 | 🇺🇸 US | with Alternator # ALB-500212 Volt | View on Amazon |
This table covers the regulators that control alternator output voltage.
3 Voltage Regulator parts are listed for the 1963 Checker Marathon, from STANDARD MOTOR PRODUCTS and WELLS.
Economy: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS VR101T.
The Standard Replacement section: 2 options from STANDARD MOTOR PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS VR101 is listed in this group.
Part numbers include STANDARD MOTOR PRODUCTS VR101T, STANDARD MOTOR PRODUCTS VR101 and WELLS 1V1067.
Buying Electrical Parts for a 1963 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: Alternator / Generator End Bearing and Battery .
Frequently Asked Questions
How many electrical parts fit the 1963 Checker Marathon?
Our catalog currently lists 23 electrical parts for the 1963 Checker Marathon across 5 subcategories and 9 brands, covering both the 3.7L 226cid L6 and the 5.2L 318cid V8. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 1963 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 1963 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 1963 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 1963 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 1963 Checker Marathon
Electrical Parts for Other Checker Marathon Years
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