The 1981 Excalibur Phaeton has 80 engine parts with verified fitment on this page — 15 part types and 12 brands, covering the 5.0L 305cid V8 engine. Each part includes a manufacturer part number and application notes.
The engine on the 1981 Excalibur Phaeton covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. The largest groups are Crankshaft Seal (12 parts), Connecting Rod Bearing (11 parts) and Cylinder Head Bolt (9 parts). The other 12 part types cover the remaining 48 parts.
Every part on this page is matched to the 5.0L 305cid V8 — the only engine offered in the 1981 Excalibur Phaeton.
The most listed brands for 1981 Excalibur Phaeton engine parts are ARP (21 parts), KING ENGINE BEARINGS (18 parts) and FEL-PRO (8 parts), plus 9 more brands. Quality grades include High Performance and Standard Replacement.
16 parts on this 1981 Excalibur Phaeton page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including KING ENGINE BEARINGS CR807XPN (Connecting Rod Bearing) and APEX ACS3022 (Conversion / Lower Gasket Set). Click any part number to see every vehicle that part fits.
Bolt Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 5349701 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP | 5349801 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 5349601 | 🇺🇸 US 🇨🇦 CA | Stainless Steel Hex Bolt Head | View on Amazon |
| ARP | 5349501 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Bolt kits.
4 Bolt Kit parts for the 1981 Excalibur Phaeton come from ARP.
Listed part numbers: ARP 5349701, ARP 5349801 and ARP 5349601, plus the other parts above.
Camshaft Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1341001 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Camshaft bolts.
One part is listed for the 1981 Excalibur Phaeton — ARP 1341001.
Connecting Rod Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CR807XPN | 🇺🇸 US | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS | CR807HPND | 🇺🇸 US | SetRace bearings, Bimetal (Alecular) | View on Amazon |
| KING ENGINE BEARINGS | CR807HPNDX | 🇺🇸 US | SetRace bearings, Bimetal (Alecular) | View on Amazon |
| KING ENGINE BEARINGS | CR807XPNX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | CR807XPND | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | CR807XPNDX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | CR807SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| KING ENGINE BEARINGS Popular | CR807SIX | 🇺🇸 US | Setbimetal (aluminum silicon base) | View on Amazon |
| KING ENGINE BEARINGS | CR865SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS | CR807HPNX | 🇺🇸 US | Race bearings, Bimetal (Alecular)Set | View on Amazon |
| KING ENGINE BEARINGS | CR807HPN | 🇺🇸 US | SetRace bearings, Bimetal (Alecular) | View on Amazon |
This table covers the bearings in the connecting-rod big ends. 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.
11 Connecting Rod Bearing parts for the 1981 Excalibur Phaeton come from KING ENGINE BEARINGS. The "Popular" part is KING ENGINE BEARINGS CR807XPN.
The High Performance section lists 6 options from KING ENGINE BEARINGS — engineered beyond original-equipment specification. KING ENGINE BEARINGS CR807XPN is listed in this group.
In the Standard Replacement grade, KING ENGINE BEARINGS supplies 3 parts: built to original-equipment specification. A representative part number is KING ENGINE BEARINGS CR807SI.
2 further parts sit outside the graded sections, with the same engine-level match.
Connecting Rod Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1346003 | 🇺🇸 US 🇨🇦 CA | Large Journal 3/8" | View on Amazon |
| ARP | 1346001 | 🇺🇸 US 🇨🇦 CA | Small Journal 11/32" | View on Amazon |
This table covers the Connecting Rod bolts.
ARP supplies both parts for the 1981 Excalibur Phaeton.
This group includes ARP 1346003 and ARP 1346001.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular | ACS3022 | 🇺🇸 US | View on Amazon | |
| ENGINE PRO | 3777332 | 🇺🇸 US | View on Amazon | |
| FEL-PRO | CS77332 | 🇺🇸 US | Multi-PieceRear Main Seal Not Included | View on Amazon |
| MAHLE / CLEVITE | CS1178 | 🇺🇸 US | Includes 2 Piece Rear Main Seal | View on Amazon |
| VICTOR REINZ | 081005601 | 🇺🇸 US | with 2 Piece Rear Main Seal | View on Amazon |
This table covers lower / conversion gasket sets for oil-pan and related joints. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
5 Conversion / Lower Gasket Set parts for the 1981 Excalibur Phaeton come from 5 brands — APEX, ENGINE PRO, FEL-PRO and 2 other brands. The "Popular" part is APEX ACS3022.
Listed part numbers: APEX ACS3022, ENGINE PRO 3777332 and FEL-PRO CS77332, plus the other parts above.
Crankshaft Main Bearing
High Performance
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | MB557XP | 🇺🇸 US | SetRace bearings, Trimetal [Pmax Black] | View on Amazon |
| KING ENGINE BEARINGS | MB557HP | 🇺🇸 US | alecular (racing line)Set | View on Amazon |
| KING ENGINE BEARINGS | MB557HPX | 🇺🇸 US | alecular (racing line)Set | View on Amazon |
| KING ENGINE BEARINGS | MB557XPX | 🇺🇸 US | Race bearings, Trimetal [Pmax Black]Set | View on Amazon |
| KING ENGINE BEARINGS | MB557XPC | 🇺🇸 US | pmaxkote (racing line), polymer coatedSet | View on Amazon |
| KING ENGINE BEARINGS | MB557XPCX | 🇺🇸 US | pmaxkote (racing line), polymer coatedSet | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS Popular | MB557SI | 🇺🇸 US | SetBimetal (Aluminum Silicon Base) | View on Amazon |
This table covers the main bearings that support the crankshaft in the block. 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.
KING ENGINE BEARINGS supplies the 7 Crankshaft Main Bearing parts for the 1981 Excalibur Phaeton. KING ENGINE BEARINGS MB557XP carries the "Popular" badge.
High Performance: 6 parts, from KING ENGINE BEARINGS. A representative part number is KING ENGINE BEARINGS MB557XP.
The Standard Replacement section: 1 option from KING ENGINE BEARINGS. KING ENGINE BEARINGS MB557SI is listed in this group.
Part numbers include KING ENGINE BEARINGS MB557XP, KING ENGINE BEARINGS MB557HP and KING ENGINE BEARINGS MB557HPX, among others listed above.
Crankshaft Main Bearing Cap Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1345401 | 🇺🇸 US 🇨🇦 CA | Stud2-Bolt | View on Amazon |
| ARP | 1345601 | 🇺🇸 US 🇨🇦 CA | Stud4-Bolt | View on Amazon |
This table covers the Crankshaft Main Bearing Cap bolts.
2 Crankshaft Main Bearing Cap Bolt parts for the 1981 Excalibur Phaeton come from ARP.
This group includes ARP 1345401 and ARP 1345601.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 99176 | 🇺🇸 US | Front0.563 IN Width | View on Amazon |
| WJB / INMOTION PARTS | WS99176 | 🇺🇸 US | Installation Depth: 0.81299999999999994 InShaft Diameter Minimum (In): 1.7609999999999999 In | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
2 Crankshaft Repair Sleeve parts are listed for the 1981 Excalibur Phaeton, from NATIONAL and WJB / INMOTION PARTS.
Listed part numbers: NATIONAL 99176 and WJB / INMOTION PARTS WS99176.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | BS40013 | 🇺🇸 US | Rubber | View on Amazon |
| FEL-PRO Popular | BS118291 | 🇺🇸 US | Rubber | View on Amazon |
| NATIONAL Popular | 9845 | 🇺🇸 US | Front0.375 IN Width | View on Amazon |
| APEX | ABS322 | 🇺🇸 US | Rear | View on Amazon |
| BCA | NS9845 | 🇺🇸 US | Front0.375 IN Width | View on Amazon |
| NATIONAL | 5092 | 🇺🇸 US | RearSplit Type | View on Amazon |
| SCHAEFFLER | SS2784 | 🇺🇸 US | Front9.53 mm Width | View on Amazon |
| SCHAEFFLER | SR3932 | 🇺🇸 US | View on Amazon | |
| VICTOR REINZ | 191006901 | 🇺🇸 US | Set | View on Amazon |
| VICTOR REINZ | 191011601 | 🇺🇸 US | SetRubber | View on Amazon |
| WJB / INMOTION PARTS | WS5092 | 🇺🇸 US | Housing Bore: 3 InMaterial: Silicone | View on Amazon |
| WJB / INMOTION PARTS | WS9845 | 🇺🇸 US | Housing Bore: 2.4089999999999998 InInside Diameter: 1.7629999999999999 In | View on Amazon |
This table covers the front and rear seals that keep oil in at the crankshaft. 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.
12 Crankshaft Seal parts are listed for the 1981 Excalibur Phaeton, from FEL-PRO, NATIONAL, SCHAEFFLER and 4 other brands. FEL-PRO BS40013 carries the "Popular" badge.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP Popular | 1343601 | 🇺🇸 US 🇨🇦 CA | SetHex Bolt Head | View on Amazon |
| FEL-PRO Popular | ES72856 | 🇺🇸 US | Set | View on Amazon |
| APEX | AHB322 | 🇺🇸 US | Set | View on Amazon |
| ARP | 1343701 | 🇺🇸 US 🇨🇦 CA | SetBlack Oxide | View on Amazon |
| ARP | 1343703 | 🇺🇸 US 🇨🇦 CA | SetBlack Oxide Inner Rows, Stainless Steel Outer Row | View on Amazon |
| ARP | 1343603 | 🇺🇸 US 🇨🇦 CA | SetStainless Steel Hex Bolt Head | View on Amazon |
| ARP | 1344001 | 🇺🇸 US 🇨🇦 CA | Stud TypeHex Bolt Head | View on Amazon |
| MAHLE / CLEVITE | GS33285 | 🇺🇸 US | Cylinder Head Bolt KitSet | View on Amazon |
| VICTOR REINZ | 141004801 | 🇺🇸 US | Set | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
9 Cylinder Head Bolt parts for the 1981 Excalibur Phaeton come from 5 brands — ARP, FEL-PRO, APEX and 2 other brands. The "Popular" part is ARP 1343601.
Listed part numbers: ARP 1343601, FEL-PRO ES72856 and APEX AHB322, plus the other parts above.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| APEX Popular | AHG324 | 🇺🇸 US | View on Amazon | |
| FEL-PRO Popular | 8510PT | 🇺🇸 US | Permatorque | View on Amazon |
| FEL-PRO | 505SD | 🇺🇸 US | Permatorque Severe Duty | View on Amazon |
| MAHLE / CLEVITE | 3514VC | 🇺🇸 US | Composite | View on Amazon |
| ULTRA-POWER | 8510PT | 🇺🇸 US 🇨🇦 CA | Head Bolt Replacement RecommendedHead Bolts Not Included | View on Amazon |
| VICTOR REINZ | 611033600 | 🇺🇸 US | View on Amazon | |
| VICTOR REINZ | 611060800 | 🇺🇸 US | Severe Duty | View on Amazon |
This table covers the head gaskets that seal the block to the cylinder head. 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.
7 Cylinder Head Gasket parts for the 1981 Excalibur Phaeton come from 5 brands — FEL-PRO, VICTOR REINZ, APEX and 2 other brands. The "Popular" part is APEX AHG324.
Listed part numbers: APEX AHG324, FEL-PRO 8510PT and FEL-PRO 505SD, plus the other parts above.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | FS8510PT1 | 🇺🇸 US | 1-3/4 (In) Inside Diameter Exhaust Pipe Packing Not Included or 2-17/32 (In) Inside Diameter Exhaust Pipe Packing Not IncludedOverhaul Set | View on Amazon |
| APEX | AFS3024 | 🇺🇸 US | View on Amazon | |
| ENGINE PRO | 311000 | 🇺🇸 US | FEL-Pro CO-Branded Performance Gasket Sets with Permatorque Steel Core Laminate Head Gaskets | View on Amazon |
| ENGINE PRO | 311000MLS | 🇺🇸 US | FEL-Pro CO-Branded Perfomance Gasket Sets with MLS Head Gaskets | View on Amazon |
| VICTOR REINZ | 011005701 | 🇺🇸 US | Rear Exhaust Pipe Gasket Not Included | View on Amazon |
This table covers full gasket kits covering the joints opened in an engine rebuild. Typical signs include the leaks that sent the engine or gearbox to the bench. Use every gasket the set is meant for that opening — leftover unused pieces usually belong to another configuration.
5 Engine Kit Gasket Set parts for the 1981 Excalibur Phaeton come from 4 brands — ENGINE PRO, FEL-PRO, APEX and 1 other brand. The "Popular" part is FEL-PRO FS8510PT1.
This group includes FEL-PRO FS8510PT1, APEX AFS3024 and ENGINE PRO 311000 and the remaining parts above.
Harmonic Balancer Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 4306801 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ARP | 1342501 | 🇺🇸 US 🇨🇦 CA | 5/8 Socket Head | View on Amazon |
| ARP | 2342501 | 🇺🇸 US 🇨🇦 CA | 13/16 Socket Head | View on Amazon |
This table covers the Harmonic Balancer bolts.
ARP supplies the 3 Harmonic Balancer Bolt parts for the 1981 Excalibur Phaeton.
Listed part numbers: ARP 4306801, ARP 1342501 and ARP 2342501.
Harmonic Balancer Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE Popular | A228 | 🇺🇸 US | Nickel Plated Formed Steel | View on Amazon |
| NATIONAL Popular | 88176 | 🇺🇸 US | Except flange tear line | View on Amazon |
| BCA | NS5000 | 🇺🇸 US | View on Amazon | |
| FEL-PRO | 16202 | 🇺🇸 US | Use with Installation Tool | View on Amazon |
| NATIONAL | 5000 | 🇺🇸 US | KitNitrile | View on Amazon |
| VICTOR REINZ | 711347500 | 🇺🇸 US | View on Amazon |
This table covers the wear sleeves used to restore a Harmonic Balancer seal surface.
6 Harmonic Balancer Repair Sleeve parts are listed for the 1981 Excalibur Phaeton, from NATIONAL, MAHLE / CLEVITE, BCA and 2 other brands. MAHLE / CLEVITE A228 carries the "Popular" badge.
Part numbers include MAHLE / CLEVITE A228, NATIONAL 88176 and BCA NS5000, among others listed above.
Intake Manifold Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ARP | 1342001 | 🇺🇸 US 🇨🇦 CA | Hex Bolt Head | View on Amazon |
| ARP | 1342101 | 🇺🇸 US 🇨🇦 CA | Black Oxide12 Point Bolt Head | View on Amazon |
| ARP | 4342001 | 🇺🇸 US 🇨🇦 CA | Stainless Steel Hex Bolt Head | View on Amazon |
| ARP | 4342101 | 🇺🇸 US 🇨🇦 CA | Stainless Steel12 Point Bolt Head | View on Amazon |
This table covers the Intake Manifold bolts.
4 Intake Manifold Bolt parts for the 1981 Excalibur Phaeton come from ARP.
This group includes ARP 1342001, ARP 1342101 and ARP 4342001 and the remaining parts above.
Buying Engine Parts for a 1981 Excalibur Phaeton
On this vehicle, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.
- 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Crankshaft Seal and Connecting Rod Bearing .
Frequently Asked Questions
How many engine parts fit the 1981 Excalibur Phaeton?
Our catalog currently lists 80 engine parts for the 1981 Excalibur Phaeton across 15 subcategories and 12 brands, covering the 5.0L 305cid V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1981 Excalibur Phaeton?
Common symptoms include oil spots under the vehicle, blue or white exhaust smoke, ticking from the valvetrain, or coolant mysteriously disappearing. 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
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 1981 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 1981 Excalibur Phaeton?
Every part on this page is matched to the 5.0L 305cid V8 engine. Then engine hard parts are unforgiving of guesswork — confirm the casting or engine code before ordering, because one model year can hide two different blocks. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 1981 Excalibur Phaeton
Engine Parts for Other Excalibur Phaeton Years
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