This page lists 23 drivetrain parts for the 1983 Excalibur Phaeton, across 6 part types, covering the 5.0L 305cid V8 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1983 Excalibur Phaeton, 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 (10 parts), Differential Pinion Seal (5 parts) and Differential Carrier Bearing / Race (3 parts). The other 3 part types cover the remaining 5 parts.
Every part on this page is matched to the 5.0L 305cid V8 — the only engine offered in the 1983 Excalibur Phaeton.
The most listed brands for 1983 Excalibur Phaeton drivetrain parts are WJB / INMOTION PARTS (7 parts), BCA (7 parts) and ACDELCO (2 parts), plus 5 more brands. Quality grades include Standard Replacement and Economy.
3 parts on this 1983 Excalibur Phaeton page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including WJB / INMOTION PARTS WTM86610 (Differential Pinion Bearing / Race) and WJB / INMOTION PARTS WS5778 (Differential Pinion Seal). Click any part number to see every vehicle that part fits.
Axle Shaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | B2412 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
This table covers the Axle Shaft 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 1983 Excalibur Phaeton — NATIONAL B2412.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WTA37 | 🇺🇸 US | Bearing & Race Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | A37 | 🇺🇸 US 🇨🇦 CA | GoldBearing & Race Set | View on Amazon |
| BCA | NBA37 | 🇺🇸 US | Bearing & Race SetIncludes Cup and Cone | View on Amazon |
This table covers the bearings and races that support the differential carrier.
3 Differential Carrier Bearing / Race parts for the 1983 Excalibur Phaeton come from 3 brands — WJB / INMOTION PARTS, ACDELCO and BCA.
The Economy section lists 1 option from WJB / INMOTION PARTS — the catalog's value-priced group. WJB / INMOTION PARTS WTA37 is listed in this group.
In the Standard Replacement grade, ACDELCO and BCA supply 2 parts: built to original-equipment specification. A representative part number is ACDELCO A37.
Listed part numbers: WJB / INMOTION PARTS WTA37, ACDELCO A37 and BCA NBA37.
Differential Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | RDS55475 | 🇺🇸 US | Rearwith Spicer 44 Axle(S) | View on Amazon |
| VICTOR REINZ | 711644700 | 🇺🇸 US | Fits Rearwith 8.500 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.
2 Differential Cover Gasket parts for the 1983 Excalibur Phaeton come from 2 brands — FEL-PRO and VICTOR REINZ.
This group includes FEL-PRO RDS55475 and VICTOR REINZ 711644700.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WTM86610 | 🇺🇸 US | RaceCup Outside Diameter (In): 2.5310000000000001 In | View on Amazon |
| FAMOUS BRAND | SHM88610 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| FAMOUS BRAND | SM86610 | 🇺🇸 US 🇨🇦 CA | Race | View on Amazon |
| WJB / INMOTION PARTS | WTHM88610 | 🇺🇸 US | Cup Outside Diameter (In): 2.8439999999999999 InRace | View on Amazon |
| WJB / INMOTION PARTS | WTHM88649 | 🇺🇸 US | Rear Innerwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular | NBM86610 | 🇺🇸 US | Race | View on Amazon |
| ACDELCO | M86610X | 🇺🇸 US 🇨🇦 CA | GoldRace | View on Amazon |
| BCA | NBHM88610 | 🇺🇸 US | Race | View on Amazon |
| BCA | NBHM88649 | 🇺🇸 US | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBM86647 | 🇺🇸 US | Rear Outerwith Spicer 44 Axle(S) | View on Amazon |
This table covers the bearings and races on the differential pinion.
10 Differential Pinion Bearing / Race parts are listed for the 1983 Excalibur Phaeton, from BCA, WJB / INMOTION PARTS, FAMOUS BRAND and 1 other brand. WJB / INMOTION PARTS WTM86610 carries the "Popular" badge.
Economy: 5 parts, from WJB / INMOTION PARTS and FAMOUS BRAND. A representative part number is WJB / INMOTION PARTS WTM86610.
The Standard Replacement section: 5 options from BCA and ACDELCO. BCA NBM86610 is listed in this group.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SR3481 | 🇺🇸 US | Rear14.3 mm Width | View on Amazon |
| WJB / INMOTION PARTS | WS99155 | 🇺🇸 US | Rear Outerwith 8.5 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 1983 Excalibur Phaeton come from 2 brands — SCHAEFFLER and WJB / INMOTION PARTS.
Part numbers include SCHAEFFLER SR3481 and WJB / INMOTION PARTS WS99155.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WS5778 | 🇺🇸 US | Nitrile | View on Amazon |
| BCA | NS5778 | 🇺🇸 US | Nitrile | View on Amazon |
| BCA | NS5778V | 🇺🇸 US | Viton | View on Amazon |
| SCHAEFFLER | SS2633 | 🇺🇸 US | Rear16.891 mm Width | View on Amazon |
| WJB / INMOTION PARTS | WS5778V | 🇺🇸 US | Rear OuterViton Type | 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.
5 Differential Pinion Seal parts for the 1983 Excalibur Phaeton come from 3 brands — WJB / INMOTION PARTS, BCA and SCHAEFFLER. The "Popular" part is WJB / INMOTION PARTS WS5778.
This group includes WJB / INMOTION PARTS WS5778, BCA NS5778 and BCA NS5778V and the remaining parts above.
Buying Drivetrain Parts for a 1983 Excalibur Phaeton
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 5.0L 305cid V8 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 Pinion Seal .
Frequently Asked Questions
How many drivetrain parts fit the 1983 Excalibur Phaeton?
Our catalog currently lists 23 drivetrain parts for the 1983 Excalibur Phaeton across 6 subcategories and 8 brands, covering the 5.0L 305cid V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of drivetrain problems on a 1983 Excalibur Phaeton?
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 1983 Excalibur Phaeton 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 1983 Excalibur Phaeton?
Every part on this page is matched to the 5.0L 305cid V8 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 1983 Excalibur Phaeton
Drivetrain Parts for Other Excalibur Phaeton Years
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