8 Engine parts are listed for the 1980 Triumph TR8, in 4 part types, covering the 3.5L V8 engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The engine on the 1980 Triumph TR8 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 Main Bearing (3 parts), Camshaft Bearing (2 parts) and Crankshaft Seal (2 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 3.5L V8 — the only engine offered in the 1980 Triumph TR8.
The most listed brands for 1980 Triumph TR8 engine parts are AJUSA (3 parts), SEALED POWER (2 parts) and DURA-BOND (1 part), plus 2 more brands.
Each part number listed for the 1980 Triumph TR8 opens a page with every vehicle that part fits.
Camshaft Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DURA-BOND | B11 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| SEALED POWER | 1421M | 🇺🇸 US 🇨🇦 CA | 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.
2 Camshaft Bearing parts for the 1980 Triumph TR8 come from 2 brands — DURA-BOND and SEALED POWER.
This group includes DURA-BOND B11 and SEALED POWER 1421M.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 54043200 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: AJUSA 54043200.
Crankshaft Main Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| KING ENGINE BEARINGS | MB589AM | 🇺🇸 US 🇨🇦 CA | SetBimetal (Aluminum Base) | View on Amazon |
| MAHLE / CLEVITE | MS558P | 🇺🇸 US 🇨🇦 CA | P Series (Tri-Metal)Set | View on Amazon |
| SEALED POWER | 4096MA | 🇺🇸 US 🇨🇦 CA | SetA-Series aluminum bearings | 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.
3 Crankshaft Main Bearing parts are listed for the 1980 Triumph TR8, from KING ENGINE BEARINGS, MAHLE / CLEVITE and SEALED POWER.
Listed part numbers: KING ENGINE BEARINGS MB589AM, MAHLE / CLEVITE MS558P and SEALED POWER 4096MA.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 15024400 | 🇺🇸 US 🇨🇦 CA | Front48.5 x 63.5 x 9 | View on Amazon |
| AJUSA | 15036800 | 🇺🇸 US 🇨🇦 CA | Rear82 x 98.5 x 12 | 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.
AJUSA supplies both parts for the 1980 Triumph TR8.
Listed part numbers: AJUSA 15024400 and AJUSA 15036800.
Buying Engine Parts for a 1980 Triumph TR8
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 3.5L 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 Main Bearing and Camshaft Bearing .
Frequently Asked Questions
How many engine parts fit the 1980 Triumph TR8?
Our catalog currently lists 8 engine parts for the 1980 Triumph TR8 across 4 subcategories and 5 brands, covering the 3.5L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1980 Triumph TR8?
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 1980 Triumph TR8 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 1980 Triumph TR8?
Every part on this page is matched to the 3.5L 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 1980 Triumph TR8
Engine Parts for Other Triumph TR8 Years
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