10 Engine parts are listed for the 1981 Morgan 4/4, in 5 part types, covering the 1.6L L4 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The engine on the 1981 Morgan 4/4 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 (5 parts), Crankshaft Repair Sleeve (2 parts) and Camshaft Bearing (1 part). The other 2 part types cover the remaining 2 parts.
The 1981 Morgan 4/4 came with a single engine, the 1.6L L4, and every part is verified against it.
7 brands supply engine parts for the 1981 Morgan 4/4, led by NATIONAL (3 parts), WJB / INMOTION PARTS (2 parts) and MAHLE / CLEVITE (1 part), plus 4 more brands.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1981 Morgan 4/4. 1 part has it: WJB / INMOTION PARTS WS3393 (Crankshaft Seal). Each part number opens a page with every vehicle that part fits.
Camshaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MAHLE / CLEVITE | SH711S | 🇺🇸 US | Full Set | View on Amazon |
This table covers the Camshaft 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 1981 Morgan 4/4 — MAHLE / CLEVITE SH711S.
Crankshaft Main Bearing Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ULTRA-POWER | WS3393 | 🇺🇸 US 🇨🇦 CA | Rear Main SealVITON TYPE | View on Amazon |
This table covers the gaskets that seal the Crankshaft Main Bearing. 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.
One part is listed for the 1981 Morgan 4/4 — ULTRA-POWER WS3393.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 99237 | 🇺🇸 US | Rear | View on Amazon |
| WJB / INMOTION PARTS | WS99237 | 🇺🇸 US | Rear | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
2 Crankshaft Repair Sleeve parts for the 1981 Morgan 4/4 come from 2 brands — NATIONAL and WJB / INMOTION PARTS.
This group includes NATIONAL 99237 and WJB / INMOTION PARTS WS99237.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WJB / INMOTION PARTS Popular | WS3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| BCA | NS3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| NATIONAL | 3393 | 🇺🇸 US | RearViton Type | View on Amazon |
| NATIONAL | 3394 | 🇺🇸 US | Front | View on Amazon |
| SCHAEFFLER | SS3211 | 🇺🇸 US | Rear10.16 mm Width | 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.
5 Crankshaft Seal parts for the 1981 Morgan 4/4 come from 4 brands — NATIONAL, WJB / INMOTION PARTS, BCA and 1 other brand. The "Popular" part is WJB / INMOTION PARTS WS3393.
Part numbers include WJB / INMOTION PARTS WS3393, BCA NS3393 and NATIONAL 3393, among others listed above.
Oil Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO | PF53 | 🇺🇸 US 🇨🇦 CA | Gold / Professional or Gold / Professional DurapackSpin-On | View on Amazon |
This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive.
This group shows a single part: ACDELCO PF53.
Buying Engine Parts for a 1981 Morgan 4/4
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 1.6L L4 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 Crankshaft Repair Sleeve .
Frequently Asked Questions
How many engine parts fit the 1981 Morgan 4/4?
Our catalog currently lists 10 engine parts for the 1981 Morgan 4/4 across 5 subcategories and 7 brands, covering the 1.6L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1981 Morgan 4/4?
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 Morgan 4/4 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 Morgan 4/4?
Every part on this page is matched to the 1.6L L4 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 Morgan 4/4
Engine Parts for Other Morgan 4/4 Years
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