This page lists 30 drivetrain parts for the 1984 Excalibur Phaeton, across 8 part types, covering the 5.0L 305cid V8 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1984 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 (14 parts), Differential Pinion Seal (4 parts) and Differential Carrier Bearing / Race (3 parts). The other 5 part types cover the remaining 9 parts.
The 1984 Excalibur Phaeton came with a single engine, the 5.0L 305cid V8, and every part is verified against it.
7 brands supply drivetrain parts for the 1984 Excalibur Phaeton, led by WJB / INMOTION PARTS (10 parts), BCA (8 parts) and NATIONAL (4 parts), plus 4 more brands. Quality grades include Economy and Standard Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1984 Excalibur Phaeton. 3 parts have it, including WJB / INMOTION PARTS WTM88048 (Differential Pinion Bearing / Race) and WJB / INMOTION PARTS WTM802048 (Differential Pinion Bearing / Race). Each part number opens a page with 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.
This group shows a single part: NATIONAL B2412.
Differential Carrier Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WTA36 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | A36 | 🇺🇸 US 🇨🇦 CA | GoldSet | View on Amazon |
| BCA | NBA36 | 🇺🇸 US | Taper Bearing 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 are listed for the 1984 Excalibur Phaeton, from WJB / INMOTION PARTS, ACDELCO and BCA.
In the Economy grade, WJB / INMOTION PARTS supplies 1 part: the catalog's value-priced group. A representative part number is WJB / INMOTION PARTS WTA36.
The Standard Replacement section lists 2 options from ACDELCO and BCA — built to original-equipment specification. ACDELCO A36 is listed in this group.
This group includes WJB / INMOTION PARTS WTA36, ACDELCO A36 and BCA NBA36.
Differential Pinion Bearing / Race
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WTM88048 | 🇺🇸 US | Bearing Shape: Cylindrical | View on Amazon |
| WJB / INMOTION PARTS Popular | WTM802048 | 🇺🇸 US | Bearing Shape: Cylindrical | View on Amazon |
| FAMOUS BRAND | SM802011 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| FAMOUS BRAND | SM88010 | 🇺🇸 US 🇨🇦 CA | RearOuter | View on Amazon |
| FAMOUS BRAND | SM802048 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| ULTRA-POWER | WTM88048 | 🇺🇸 US 🇨🇦 CA | RearOuter | View on Amazon |
| ULTRA-POWER | WTM802048 | 🇺🇸 US 🇨🇦 CA | RearInner | View on Amazon |
| WJB / INMOTION PARTS | WTM802011 | 🇺🇸 US | Race | View on Amazon |
| WJB / INMOTION PARTS | WTM88010 | 🇺🇸 US | RaceCup Outside Diameter (In): 2.6880000000000002 In | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA Popular | NBM802048 | 🇺🇸 US | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBM88010 | 🇺🇸 US | Race | View on Amazon |
| BCA | NBM802011 | 🇺🇸 US | Race | View on Amazon |
| BCA | NBM88048 | 🇺🇸 US | Bearing Shape: Cylindrical | View on Amazon |
| BCA | NBBR52 | 🇺🇸 US | Bearing & Race | View on Amazon |
This table covers the bearings and races on the differential pinion.
14 Differential Pinion Bearing / Race parts for the 1984 Excalibur Phaeton come from 4 brands — BCA, WJB / INMOTION PARTS, FAMOUS BRAND and 1 other brand. The "Popular" part is WJB / INMOTION PARTS WTM88048.
The Economy section: 9 options from WJB / INMOTION PARTS, FAMOUS BRAND and ULTRA-POWER. WJB / INMOTION PARTS WTM88048 is listed in this group.
Standard Replacement: 5 parts, from BCA. A representative part number is BCA NBM802048.
Differential Pinion Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SCHAEFFLER | SS3478 | 🇺🇸 US | Rear | View on Amazon |
| WJB / INMOTION PARTS | WS99187 | 🇺🇸 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 are listed for the 1984 Excalibur Phaeton, from SCHAEFFLER and WJB / INMOTION PARTS.
Part numbers include SCHAEFFLER SS3478 and WJB / INMOTION PARTS WS99187.
Differential Pinion Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS9316 | 🇺🇸 US | Rear Outerwith Spicer 44 Axle(S) | View on Amazon |
| NATIONAL | 9316 | 🇺🇸 US | Rear Outerwith 8.5 IN Ring Gear | View on Amazon |
| SCHAEFFLER | SS3226 | 🇺🇸 US | Type of construction: FrsaiRubber, Spring, Auxiliary Lip, Inner shell | View on Amazon |
| WJB / INMOTION PARTS | WS9316 | 🇺🇸 US | Rear Outerwith 8.5 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.
4 Differential Pinion Seal parts are listed for the 1984 Excalibur Phaeton, from BCA, NATIONAL, SCHAEFFLER and 1 other brand.
Part numbers include BCA NS9316, NATIONAL 9316 and SCHAEFFLER SS3226, among others listed above.
Differential Rebuild Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS | WKRA339A | 🇺🇸 US | Rearwith 8.5 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 WKRA339A.
Differential Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BCA | NS88187 | 🇺🇸 US | Rearwith Spicer 44 Axle(S) | View on Amazon |
| NATIONAL | 99150 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
| WJB / INMOTION PARTS | WS99150 | 🇺🇸 US | Rearwith 8.5 IN Ring Gear | View on Amazon |
This table covers the wear sleeves used to restore a Differential seal surface.
3 Differential Repair Sleeve parts for the 1984 Excalibur Phaeton come from 3 brands — BCA, NATIONAL and WJB / INMOTION PARTS.
Part numbers include BCA NS88187, NATIONAL 99150 and WJB / INMOTION PARTS WS99150.
Differential Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 473227V | 🇺🇸 US | Viton | View on Amazon |
| WJB / INMOTION PARTS | WS473227V | 🇺🇸 US | RearViton Type | View on Amazon |
This table covers the seals at the Differential. 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.
2 Differential Seal parts for the 1984 Excalibur Phaeton come from 2 brands — NATIONAL and WJB / INMOTION PARTS.
Part numbers include NATIONAL 473227V and WJB / INMOTION PARTS WS473227V.
Buying Drivetrain Parts for a 1984 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 1984 Excalibur Phaeton?
Our catalog currently lists 30 drivetrain parts for the 1984 Excalibur Phaeton across 8 subcategories and 7 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 1984 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 1984 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 1984 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 1984 Excalibur Phaeton
Drivetrain Parts for Other Excalibur Phaeton Years
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