This page lists 56 drivetrain parts for the 1966 Fargo P100 Parcel Delivery, across 8 part types, covering the 3.7L 225cid L6 engine. Every part shows its brand, manufacturer part number and fitment notes.
The drivetrain system on the 1966 Fargo P100 Parcel Delivery moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware. The largest groups are Differential Pinion Bearing / Race (26 parts), Differential Carrier Bearing / Race (13 parts) and Differential Pinion Seal (8 parts). The other 5 part types cover the remaining 9 parts.
Every part on this page is matched to the 3.7L 225cid L6 — the only engine offered in the 1966 Fargo P100 Parcel Delivery.
The most listed brands for 1966 Fargo P100 Parcel Delivery drivetrain parts are BCA (21 parts), WJB / INMOTION PARTS (20 parts) and NATIONAL (7 parts), plus 4 more brands. Quality grades include Standard Replacement and Economy.
11 parts on this 1966 Fargo P100 Parcel Delivery page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including WJB / INMOTION PARTS WTLM104949 (Differential Carrier Bearing / Race) and WJB / INMOTION PARTS WTM88010 (Differential Pinion Bearing / Race). Click any part number to see every vehicle that part fits.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WTLM104949 | 🇨🇦 CA | Rearwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS Popular | WTA37 | 🇨🇦 CA | Bearing & Race Set | View on Amazon |
| WJB / INMOTION PARTS | WT25520 | 🇨🇦 CA | RaceCup Outside Diameter (In): 3.2650000000000001 In | View on Amazon |
| WJB / INMOTION PARTS | WTLM104912 | 🇨🇦 CA | RaceWidth: 0.65 In | View on Amazon |
| WJB / INMOTION PARTS | WT25590 | 🇨🇦 CA | Fits Rearwith 8.75 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | A37 | 🇺🇸 US 🇨🇦 CA | GoldBearing & Race Set | View on Amazon |
| ACDELCO | ACLM104949 | 🇺🇸 US 🇨🇦 CA | Gold | View on Amazon |
| BCA | NB25520 | 🇨🇦 CA | Race | View on Amazon |
| BCA | NBLM104912 | 🇨🇦 CA | Race | View on Amazon |
| BCA | NBLM104949 | 🇨🇦 CA | RearCasting # 742 | View on Amazon |
| BCA | NBA37 | 🇨🇦 CA | Bearing & Race SetIncludes Cup and Cone | View on Amazon |
| BCA | NB25590 | 🇨🇦 CA | RearCasting # 741 | View on Amazon |
| NATIONAL | 25520 | 🇨🇦 CA | Taper Bearing CupRace | View on Amazon |
This table covers the bearings and races that support the differential carrier.
13 Differential Carrier Bearing / Race parts for the 1966 Fargo P100 Parcel Delivery come from 4 brands — WJB / INMOTION PARTS, BCA, ACDELCO and 1 other brand. The "Popular" part is WJB / INMOTION PARTS WTLM104949.
The Economy section lists 5 options from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WTLM104949 is listed in this group.
In the Standard Replacement grade, BCA, ACDELCO and NATIONAL supply 8 parts: built to original-equipment specification. A representative part number is ACDELCO A37.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | RDS6583 | 🇨🇦 CA | Fits Rearwith 8.75 (In) Ring Gear | View on Amazon |
| FEL-PRO | RDS6014 | 🇨🇦 CA | Rearwith 10.54 (In) Ring Gear | View on Amazon |
| VICTOR REINZ | 711482500 | 🇨🇦 CA | Fits with 10 Bolt Holeswith Chrysler 8.75 IN Rear Axl | View on Amazon |
| VICTOR REINZ | 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 for the 1966 Fargo P100 Parcel Delivery come from 2 brands — FEL-PRO and VICTOR REINZ.
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 | WTM88010 | 🇨🇦 CA | RaceCup Outside Diameter (In): 2.6880000000000002 In | View on Amazon |
| WJB / INMOTION PARTS Popular | WTM88048 | 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| WJB / INMOTION PARTS Popular | WTHM89443 | 🇨🇦 CA | Fits Rear Outerwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WTHM803110 | 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTHM88510 | 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTHM88542 | 🇨🇦 CA | Rear Outerwith 10.54 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WTHM89410 | 🇨🇦 CA | RaceCup Outside Diameter (mm): 76.2 MM | View on Amazon |
| WJB / INMOTION PARTS | WTHM807010 | 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTHM89446 | 🇨🇦 CA | Fits Rear Innerwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WTHM803149 | 🇨🇦 CA | Rear Innerwith 8.75 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WTHM807040 | 🇨🇦 CA | Rear Innerwith 10.54 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular | NBM88010 | 🇨🇦 CA | Race | View on Amazon |
| BCA Popular | NBM88048 | 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA Popular | NBBR52 | 🇨🇦 CA | Bearing & Race | View on Amazon |
| BCA | NBHM88510 | 🇨🇦 CA | Race | View on Amazon |
| BCA | NBHM89410 | 🇨🇦 CA | Race | View on Amazon |
| BCA | NBHM803110 | 🇨🇦 CA | Race | View on Amazon |
| BCA | NBHM88542 | 🇨🇦 CA | Rear Outerwith Spicer 70LD Axle(S) | View on Amazon |
| BCA | NBHM807010 | 🇨🇦 CA | Race | View on Amazon |
| BCA | NBHM89446 | 🇨🇦 CA | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBHM803149 | 🇨🇦 CA | Rear InnerCasting # 742 | View on Amazon |
| BCA | NBHM89443 | 🇨🇦 CA | Rear OuterCasting # 742 | View on Amazon |
| BCA | NBHM807040 | 🇨🇦 CA | Rear Innerwith Spicer 70LD Axle(S) | View on Amazon |
| NATIONAL | HM89410 | 🇨🇦 CA | RaceTaper Bearing Cup | View on Amazon |
| NATIONAL | HM89446 | 🇨🇦 CA | Taper Bearing Cone | View on Amazon |
| NATIONAL | 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 are listed for the 1966 Fargo P100 Parcel Delivery, from BCA, WJB / INMOTION PARTS and NATIONAL. WJB / INMOTION PARTS WTM88010 carries the "Popular" badge. Economy and Standard Replacement are all represented, and Standard Replacement alone accounts for 15 parts.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SR3506 | 🇨🇦 CA | Rear0.531 In Width | View on Amazon |
| WJB / INMOTION PARTS | 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 for the 1966 Fargo P100 Parcel Delivery come from 2 brands — SCHAEFFLER and WJB / INMOTION PARTS.
Part numbers include SCHAEFFLER SR3506 and WJB / INMOTION PARTS WS99187.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL Popular | 8515N | 🇨🇦 CA | Rear OuterCasting # 741 | View on Amazon |
| NATIONAL Popular | 7216 | 🇨🇦 CA | Rear OuterCasting # 742 | View on Amazon |
| BCA | NS6808N | 🇨🇦 CA | Rear Outerwith Spicer 70LD Axle(S) | View on Amazon |
| BCA | NS8515N | 🇨🇦 CA | Rear OuterCasting # 741 | View on Amazon |
| BCA | NS7216 | 🇨🇦 CA | Rear OuterCasting # 742 | View on Amazon |
| NATIONAL | 6808N | 🇨🇦 CA | Rear Outerwith 10.54 IN Ring Gear | View on Amazon |
| SCHAEFFLER | SS2947 | 🇨🇦 CA | Rear0.531 In Width | View on Amazon |
| WJB / INMOTION PARTS | 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 for the 1966 Fargo P100 Parcel Delivery come from 4 brands — NATIONAL, BCA, SCHAEFFLER and 1 other brand. The "Popular" part is NATIONAL 8515N.
Listed part numbers: NATIONAL 8515N, NATIONAL 7216 and BCA NS6808N, plus the other parts above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | 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.
One part is listed for the 1966 Fargo P100 Parcel Delivery — WJB / INMOTION PARTS WKRA300.
Differential Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS88187 | 🇨🇦 CA | Fits RearCasting # 742 | View on Amazon |
This table covers the wear sleeves used to restore a Differential seal surface.
One part is listed for the 1966 Fargo P100 Parcel Delivery — BCA NS88187.
Transfer Case Main Shaft Pilot Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | 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.
One part is listed for the 1966 Fargo P100 Parcel Delivery — WJB / INMOTION PARTS WRQ15902.
Buying Drivetrain Parts for a 1966 Fargo P100 Parcel Delivery
On this vehicle, the drivetrain system moves power from transmission to wheels through axles, CV joints, driveshafts, differentials and wheel-end hardware.
- Confirm you have the 3.7L 225cid L6 engine — every part on this page is matched to it.
- 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 P100 Parcel Delivery?
Our catalog currently lists 56 drivetrain parts for the 1966 Fargo P100 Parcel Delivery across 8 subcategories and 7 brands, covering the 3.7L 225cid L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1966 Fargo P100 Parcel Delivery?
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 P100 Parcel Delivery 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 P100 Parcel Delivery?
Every part on this page is matched to the 3.7L 225cid L6 engine. 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 P100 Parcel Delivery
Drivetrain Parts for Other Fargo P100 Parcel Delivery Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.