The 1966 Fargo D100 Pickup has 60 drivetrain parts with verified fitment on this page — 10 part types and 8 brands, covering both the 3.7L 225cid L6 and the 5.2L 318cid V8. Each part includes a manufacturer part number and application notes.
On the 1966 Fargo D100 Pickup, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. Most of the listed parts are Differential Pinion Bearing / Race (26 parts), Differential Carrier Bearing / Race (12 parts) and Differential Pinion Seal (8 parts). The other 7 part types cover the remaining 14 parts.
The 1966 Fargo D100 Pickup was sold with both the 3.7L 225cid L6 and the 5.2L 318cid V8. All 60 parts on this page fit every engine.
8 brands supply drivetrain parts for the 1966 Fargo D100 Pickup, led by BCA (21 parts), WJB / INMOTION PARTS (20 parts) and NATIONAL (7 parts), plus 5 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1966 Fargo D100 Pickup. 11 parts have it, including WJB / INMOTION PARTS WTLM104949 (Differential Carrier Bearing / Race) and WJB / INMOTION PARTS WTM88010 (Differential Pinion Bearing / Race). Each part number opens a page with every vehicle that part fits.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: all 1966 D100 Pickup engines | WTLM104949 | 🇨🇦 CA | Rearwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: all 1966 D100 Pickup engines | WTA37 | 🇨🇦 CA | Bearing & Race Set | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WT25520 | 🇨🇦 CA | RaceCup Outside Diameter (In): 3.2650000000000001 In | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTLM104912 | 🇨🇦 CA | RaceWidth: 0.65 In | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WT25590 | 🇨🇦 CA | Fits Rearwith 8.75 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 1966 D100 Pickup engines | A37 | 🇺🇸 US 🇨🇦 CA | GoldBearing & Race Set | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NB25520 | 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBLM104912 | 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBLM104949 | 🇨🇦 CA | RearCasting # 742 | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBA37 | 🇨🇦 CA | Bearing & Race SetIncludes Cup and Cone | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NB25590 | 🇨🇦 CA | RearCasting # 741 | View on Amazon |
| NATIONAL Fits: all 1966 D100 Pickup engines | 25520 | 🇨🇦 CA | Taper Bearing CupRace | View on Amazon |
This table covers the bearings and races that support the differential carrier.
12 Differential Carrier Bearing / Race parts are listed for the 1966 Fargo D100 Pickup, from WJB / INMOTION PARTS, BCA, ACDELCO and 1 other brand. WJB / INMOTION PARTS WTLM104949 carries the "Popular" badge. All of them fit every engine offered in the 1966 D100 Pickup.
In the Economy grade, WJB / INMOTION PARTS supplies 5 parts: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WTLM104949.
The Standard Replacement section lists 7 options from BCA, ACDELCO and NATIONAL — built to original-equipment specification. ACDELCO A37 is listed in this group.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Fits: all 1966 D100 Pickup engines | RDS6583 | 🇨🇦 CA | Rearwith 8.75 (In) Ring Gear | View on Amazon |
| FEL-PRO Fits: all 1966 D100 Pickup engines | RDS6014 | 🇨🇦 CA | Rearwith 10.54 (In) Ring Gear | View on Amazon |
| VICTOR REINZ Fits: all 1966 D100 Pickup engines | 711482500 | 🇨🇦 CA | with 10 Bolt Holeswith Chrysler 8.75 IN Rear Axle | View on Amazon |
| VICTOR REINZ Fits: all 1966 D100 Pickup engines | 711480400 | 🇨🇦 CA | Rearwith 10.540 IN Ring Gear | View on Amazon |
This table covers the gaskets that seal the Differential Cover. 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 Differential Cover Gasket parts are listed for the 1966 Fargo D100 Pickup, from FEL-PRO and VICTOR REINZ. All of them fit every engine offered in the 1966 D100 Pickup.
This group includes FEL-PRO RDS6583, FEL-PRO RDS6014 and VICTOR REINZ 711482500 and the remaining parts above.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular Fits: all 1966 D100 Pickup engines | WTM88010 | 🇨🇦 CA | RaceCup Outside Diameter (In): 2.6880000000000002 In | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: all 1966 D100 Pickup engines | WTM88048 | 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| WJB / INMOTION PARTS Popular Fits: all 1966 D100 Pickup engines | WTHM89443 | 🇨🇦 CA | Fits Rear Outerwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM803110 | 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM88510 | 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM88542 | 🇨🇦 CA | Rear Outerwith 10.54 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM89410 | 🇨🇦 CA | RaceCup Outside Diameter (mm): 76.2 MM | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM807010 | 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM89446 | 🇨🇦 CA | Fits Rear Innerwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM803149 | 🇨🇦 CA | Rear Innerwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WTHM807040 | 🇨🇦 CA | Rear Innerwith 10.54 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular Fits: all 1966 D100 Pickup engines | NBM88010 | 🇨🇦 CA | Race | View on Amazon |
| BCA Popular Fits: all 1966 D100 Pickup engines | NBM88048 | 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA Popular Fits: all 1966 D100 Pickup engines | NBBR52 | 🇨🇦 CA | Bearing & Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM88510 | 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM89410 | 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM803110 | 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM88542 | 🇨🇦 CA | Rear Outerwith Spicer 70LD Axle(S) | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM807010 | 🇨🇦 CA | Race | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM89446 | 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM803149 | 🇨🇦 CA | Rear InnerCasting # 742 | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM89443 | 🇨🇦 CA | Rear OuterCasting # 742 | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NBHM807040 | 🇨🇦 CA | Rear Innerwith Spicer 70LD Axle(S) | View on Amazon |
| NATIONAL Fits: all 1966 D100 Pickup engines | HM89410 | 🇨🇦 CA | RaceTaper Bearing Cup | View on Amazon |
| NATIONAL Fits: all 1966 D100 Pickup engines | HM89446 | 🇨🇦 CA | Taper Bearing Cone | View on Amazon |
| NATIONAL Fits: all 1966 D100 Pickup engines | HM89443 | 🇨🇦 CA | Rear Outerwith 8.75 IN Ring Gear | View on Amazon |
This table covers the bearings and races on the differential pinion.
26 Differential Pinion Bearing / Race parts for the 1966 Fargo D100 Pickup come from 3 brands — BCA, WJB / INMOTION PARTS and NATIONAL. The "Popular" part is WJB / INMOTION PARTS WTM88010. Grades run from Economy through Standard Replacement; Standard Replacement is the most populated section, led by BCA and NATIONAL.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER Fits: all 1966 D100 Pickup engines | SR3506 | 🇨🇦 CA | Rear0.531 In Width | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WS99187 | 🇨🇦 CA | Fits Rear Outerwith 10.54 IN Ring Gear | View on Amazon |
This table covers the wear sleeves used to restore a grooved pinion seal surface.
2 Differential Pinion Repair Sleeve parts are listed for the 1966 Fargo D100 Pickup, from SCHAEFFLER and WJB / INMOTION PARTS. All of them fit every engine offered in the 1966 D100 Pickup.
This group includes SCHAEFFLER SR3506 and WJB / INMOTION PARTS WS99187.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular Fits: all 1966 D100 Pickup engines | 8515N | 🇨🇦 CA | Rear OuterCasting # 741 | View on Amazon |
| NATIONAL Popular Fits: all 1966 D100 Pickup engines | 7216 | 🇨🇦 CA | Rear OuterCasting # 742 | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NS6808N | 🇨🇦 CA | Rear Outerwith Spicer 70LD Axle(S) | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NS8515N | 🇨🇦 CA | Rear OuterCasting # 741 | View on Amazon |
| BCA Fits: all 1966 D100 Pickup engines | NS7216 | 🇨🇦 CA | Rear OuterCasting # 742 | View on Amazon |
| NATIONAL Fits: all 1966 D100 Pickup engines | 6808N | 🇨🇦 CA | Rear Outerwith 10.54 IN Ring Gear | View on Amazon |
| SCHAEFFLER Fits: all 1966 D100 Pickup engines | SS2947 | 🇨🇦 CA | Rear0.531 In Width | View on Amazon |
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WS6808N | 🇨🇦 CA | Rear Outerwith 10.54 IN Ring Gear | View on Amazon |
This table covers the seals at the differential pinion yoke. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again.
8 Differential Pinion Seal parts are listed for the 1966 Fargo D100 Pickup, from NATIONAL, BCA, SCHAEFFLER and 1 other brand. NATIONAL 8515N carries the "Popular" badge. All of them fit every engine offered in the 1966 D100 Pickup.
Part numbers include NATIONAL 8515N, NATIONAL 7216 and BCA NS6808N, among others listed above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WKRA300 | 🇨🇦 CA | Rearwith 8.75 IN Ring Gear | View on Amazon |
This table covers kits that group the bearings, races and seals for a differential rebuild.
This group shows a single part: WJB / INMOTION PARTS WKRA300.
Differential Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Fits: all 1966 D100 Pickup engines | NS88187 | 🇨🇦 CA | Fits RearCasting # 742 | View on Amazon |
This table covers the wear sleeves used to restore a Differential seal surface.
This group shows a single part: BCA NS88187.
Transfer Case Main Shaft Pilot Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Fits: all 1966 D100 Pickup engines | WRQ15902 | 🇨🇦 CA | Fits with 4-Speed New Process 420 Transmission | View on Amazon |
This table covers the Transfer Case Main Shaft Pilot bearings. 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.
This group shows a single part: WJB / INMOTION PARTS WRQ15902.
Universal Joint
Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Fits: all 1966 D100 Pickup engines | 245 | 🇨🇦 CA | Super StrengthNon-Greasable | View on Amazon |
| MOOG Fits: all 1966 D100 Pickup engines | 246 | 🇨🇦 CA | Super StrengthGreasable | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Fits: all 1966 D100 Pickup engines | 315G | 🇨🇦 CA | GreasableGrease Fitting In Body | View on Amazon |
| MOOG Fits: all 1966 D100 Pickup engines | 317 | 🇨🇦 CA | Greasable | View on Amazon |
This table covers the U-joints in the driveshaft.
MOOG supplies the 4 Universal Joint parts for the 1966 Fargo D100 Pickup. All of them fit every engine offered in the 1966 D100 Pickup.
The Heavy Duty section lists 2 options from MOOG — rated for severe service. MOOG 245 is listed in this group.
The Standard Replacement section: 2 options from MOOG. MOOG 315G is listed in this group.
This group includes MOOG 245, MOOG 246 and MOOG 315G and the remaining parts above.
Universal Joint Strap Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOOG Fits: all 1966 D100 Pickup engines | 31810 | 🇨🇦 CA | Fits Rearwith 2 Joint Driveshaft | View on Amazon |
This table covers the Universal Joint Strap kits.
One part is listed for the 1966 Fargo D100 Pickup — MOOG 31810.
Buying Drivetrain Parts for a 1966 Fargo D100 Pickup
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- You do not need to pick an engine: every drivetrain 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, replace the differential or transfer-case fluid with any axle or seal job while everything is already open.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Differential Pinion Bearing / Race and Differential Carrier Bearing / Race .
Frequently Asked Questions
How many drivetrain parts fit the 1966 Fargo D100 Pickup?
Our catalog currently lists 60 drivetrain parts for the 1966 Fargo D100 Pickup across 10 subcategories and 8 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 drivetrain parts differ between 1966 Fargo D100 Pickup engines?
No. On this page every drivetrain 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 drivetrain problems on a 1966 Fargo D100 Pickup?
Common symptoms include clicking in tight turns, a clunk when shifting between drive and reverse, vibration that builds with speed, or gear oil on the inside of a wheel. 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 the differential or transfer-case fluid with any axle or seal job while everything is already open.
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 D100 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 D100 Pickup?
Every part on this page already fits both the 3.7L 225cid L6 and the 5.2L 318cid V8. Then a torn CV boot caught early is a cheap boot kit; caught late it is a whole axle — inspect before deciding which to buy. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1966 Fargo D100 Pickup
Drivetrain Parts for Other Fargo D100 Pickup Years
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