This page lists 7 electrical parts for the 1966 Fargo W100 Pickup, across 2 part types, covering both the 3.7L 225cid L6 and the 5.2L 318cid V8. Every part shows its brand, manufacturer part number and fitment notes.
The electrical system on the 1966 Fargo W100 Pickup covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 7 listed parts are Alternator / Generator End Bearing (6 parts) and Starter Bushing (1 part).
The 1966 Fargo W100 Pickup was sold with both the 3.7L 225cid L6 and the 5.2L 318cid V8. All 7 parts on this page fit every engine.
The most listed brands for 1966 Fargo W100 Pickup electrical parts are WJB / INMOTION PARTS (2 parts), NATIONAL (2 parts) and ACDELCO (1 part), plus 2 more brands. Quality grades include Standard Replacement and Economy.
2 parts on this 1966 Fargo W100 Pickup page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 203FF (Alternator / Generator End Bearing) and NATIONAL 203FF (Alternator / Generator End Bearing). Click any part number to see every vehicle that part fits.
Alternator / Generator End Bearing
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1966 W100 Pickup engines | RB62032RS | 🇨🇦 CA | Two Seal Stylewith 31,41,50,53,60,65,78 Amps Alternator | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 W100 Pickup engines | WRMNJ471S | 🇨🇦 CA | with 31,41,50,53,60,65,78 Amps AlternatorCommutator End | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 1966 W100 Pickup engines | 203FF | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| NATIONAL Popular Fits: all 1966 W100 Pickup engines | 203FF | 🇨🇦 CA | Two Seal Stylewith 31,41,50,53,60,65,78 Amps Alternator | View on Amazon |
| BCA Fits: all 1966 W100 Pickup engines | NB203FF | 🇨🇦 CA | with 2 Seal Designwith 31, 41, 50, 53, 60, 65, 78 Amps Alternator | View on Amazon |
| NATIONAL Fits: all 1966 W100 Pickup engines | MNJ471S | 🇨🇦 CA | with 31,41,50,53,60,65,78 Amps AlternatorCommutator End | 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.
6 Alternator / Generator End Bearing parts for the 1966 Fargo W100 Pickup come from 4 brands — WJB / INMOTION PARTS, NATIONAL, ACDELCO and 1 other brand. The "Popular" part is ACDELCO 203FF. Every part fits both the 3.7L 225cid L6 and the 5.2L 318cid V8.
The Economy section lists 2 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS RB62032RS is listed in this group.
In the Standard Replacement grade, NATIONAL, ACDELCO and BCA 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 WJB / INMOTION PARTS WRMNJ471S, plus the other parts above.
Starter Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS Fits: all 1966 W100 Pickup engines | 7A1008 | 🇨🇦 CA | Fits Drive EndStarter # 2095753 | 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.
This group shows a single part: WELLS 7A1008.
Buying Electrical Parts for a 1966 Fargo W100 Pickup
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.
- You do not need to pick an engine: every electrical part on this page fits both the 3.7L 225cid L6 and the 5.2L 318cid V8.
- 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 Starter Bushing .
Frequently Asked Questions
How many electrical parts fit the 1966 Fargo W100 Pickup?
Our catalog currently lists 7 electrical parts for the 1966 Fargo W100 Pickup across 2 subcategories and 5 brands, covering both the 3.7L 225cid L6 and the 5.2L 318cid V8. Each part is matched to the engine(s) it fits.
Do electrical parts differ between 1966 Fargo W100 Pickup engines?
No. On this page every electrical part fits both the 3.7L 225cid L6 and the 5.2L 318cid V8. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical problems on a 1966 Fargo W100 Pickup?
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 1966 Fargo W100 Pickup 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 1966 Fargo W100 Pickup?
Every part on this page already fits both the 3.7L 225cid L6 and the 5.2L 318cid V8. 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 1966 Fargo W100 Pickup
Electrical Parts for Other Fargo W100 Pickup Years
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