The 1973 Triumph TR6 has 64 engine parts with verified fitment on this page — 28 part types and 20 brands, covering the 2.5L L6 engine. Each part includes a manufacturer part number and application notes.
On the 1973 Triumph TR6, 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. 20 parts of the 64 listed are Crankshaft Seal (8 parts), Crankshaft Repair Sleeve (6 parts) and Expansion Plug (6 parts). The other 25 part types cover the remaining 44 parts.
Every part on this page is matched to the 2.5L L6 — the only engine offered in the 1973 Triumph TR6.
The most listed brands for 1973 Triumph TR6 engine parts are ITM ENGINE COMPONENTS (25 parts), PIONEER (5 parts) and TIMKEN (4 parts), plus 17 more brands. Quality grades include Standard Replacement and Economy.
8 parts on this 1973 Triumph TR6 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including TIMKEN KWK99199 (Crankshaft Repair Sleeve) and ITM ENGINE COMPONENTS 1504013 (Crankshaft Seal). Click any part number to see every vehicle that part fits.
Connecting Rod Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 6B2406 | 🇺🇸 US 🇨🇦 CA | Set | 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.
This group shows a single part: ITM ENGINE COMPONENTS 6B2406.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 0925601 | 🇺🇸 US 🇨🇦 CA | Set does Not contain engine Oil seals | 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: ITM ENGINE COMPONENTS 0925601.
Crankshaft Main Bearing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 4M2407 | 🇺🇸 US 🇨🇦 CA | Set | 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.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS 4M2407.
Crankshaft Main Bearing Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NATIONAL | 99287 | 🇺🇸 US 🇨🇦 CA | Fits Rear Main Seal REPAIR SLEEVE | 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.
This group shows a single part: NATIONAL 99287.
Crankshaft Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TIMKEN Popular | KWK99199 | 🇺🇸 US 🇨🇦 CA | Kwik-Sleeve | View on Amazon |
| TIMKEN Popular | KWK99287 | 🇺🇸 US 🇨🇦 CA | Kwik-Sleeve | View on Amazon |
| NATIONAL | 99199 | 🇺🇸 US 🇨🇦 CA | Front0.563 IN Width | View on Amazon |
| SCHAEFFLER | SR3511 | 🇺🇸 US 🇨🇦 CA | Frontwith 2.00 In Shaft | View on Amazon |
| SCHAEFFLER | SR3542 | 🇺🇸 US 🇨🇦 CA | Rearwith 2.875 In Shaft | View on Amazon |
| WJB / INMOTION PARTS | WS99199 | 🇺🇸 US 🇨🇦 CA | Shaft Maximum Diameter (In): 2.0030000000000001 In | View on Amazon |
This table covers the sleeves used to restore a grooved crankshaft seal surface.
6 Crankshaft Repair Sleeve parts are listed for the 1973 Triumph TR6, from TIMKEN, SCHAEFFLER, NATIONAL and 1 other brand. TIMKEN KWK99199 carries the "Popular" badge.
This group includes TIMKEN KWK99199, TIMKEN KWK99287 and NATIONAL 99199 and the remaining parts above.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS Popular | 1504013 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| NATIONAL Popular | 472397 | 🇺🇸 US 🇨🇦 CA | Nitrile | View on Amazon |
| BCA | NS472397 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| SCHAEFFLER | SS3046 | 🇺🇸 US 🇨🇦 CA | Front3.01" O.D. X 0.31" Width | View on Amazon |
| SCHAEFFLER | SS2906 | 🇺🇸 US 🇨🇦 CA | Rear2.63" O.D. X 0.35" Width | View on Amazon |
| TIMKEN | 472397 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| TIMKEN | 6985 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| WJB / INMOTION PARTS | WS472397 | 🇺🇸 US 🇨🇦 CA | Nitrile | 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.
8 Crankshaft Seal parts are listed for the 1973 Triumph TR6, from SCHAEFFLER, TIMKEN, ITM ENGINE COMPONENTS and 3 other brands. ITM ENGINE COMPONENTS 1504013 carries the "Popular" badge.
Part numbers include ITM ENGINE COMPONENTS 1504013, NATIONAL 472397 and BCA NS472397, among others listed above.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 0945603 | 🇺🇸 US 🇨🇦 CA | Graphite Composite Head Gasket | 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.
This group shows a single part: ITM ENGINE COMPONENTS 0945603.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 0915617 | 🇺🇸 US 🇨🇦 CA | Set does Not contain valve stem seals.Set | View on Amazon |
This table covers multi-piece gasket sets for a cylinder-head job. 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: ITM ENGINE COMPONENTS 0915617.
Exhaust Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | RX34657 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the exhaust valves that let combustion gas out of the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS RX34657.
Expansion Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING Popular | MPE156BR | 🇺🇸 US 🇨🇦 CA | Brass | View on Amazon |
| MELLING | MPE156R | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
| PIONEER | EP8 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
| PIONEER | EPC208 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
| PIONEER | EPC218 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
| PIONEER | EPC256 | 🇺🇸 US 🇨🇦 CA | Steel | View on Amazon |
This table covers the Expansion plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
6 Expansion Plug parts for the 1973 Triumph TR6 come from 2 brands — PIONEER and MELLING. The "Popular" part is MELLING MPE156BR.
Part numbers include MELLING MPE156BR, MELLING MPE156R and PIONEER EP8, among others listed above.
Intake Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | RV34333 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS RV34333.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PUROLATOR | L10222 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WIX Popular | 51313 | 🇺🇸 US 🇨🇦 CA | without Oil Cooler | View on Amazon |
| HASTINGS / BALDWIN | LF338 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE | OX16D | 🇺🇸 US 🇨🇦 CA | Cartridge | View on Amazon |
| MANN | H10182N | 🇺🇸 US 🇨🇦 CA | 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.
5 Oil Filter parts are listed for the 1973 Triumph TR6, from PUROLATOR, WIX, HASTINGS / BALDWIN and 2 other brands. WIX 51313 carries the "Popular" badge.
In the Economy grade, PUROLATOR supplies 1 part: the catalog's value-priced group. A representative part number is PUROLATOR L10222.
The Standard Replacement section lists 4 options from WIX, HASTINGS / BALDWIN, MAHLE / CLEVITE and 1 other brand — built to original-equipment specification. WIX 51313 is listed in this group.
Listed part numbers: WIX 51313, PUROLATOR L10222 and HASTINGS / BALDWIN LF338, plus the other parts above.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 0995602 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the gaskets between the oil pan and the block. 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 1973 Triumph TR6 — ITM ENGINE COMPONENTS 0995602.
Oil Pump
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 057320 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil pumps. Typical signs include noise from the pump, no pressure, or fluid that never arrives at the outlet. Prime or fill the pump as the notes require. A dry start is a common way to kill a new unit.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS 057320.
Piston
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | RY6352 | 🇺🇸 US 🇨🇦 CA | Compression Ratio 7.75:1, 8.6:1-2.9405 Inch | View on Amazon |
This table covers the pistons that travel in each cylinder. Typical signs include knock, blow-by, or a cylinder that will not hold compression. Piston work is a short-block job. Match bore, pin and ring pack in the notes — not the photo.
This group shows a single part: ITM ENGINE COMPONENTS RY6352.
Piston Pin Bushing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | RB890 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Piston Pin bushings. Typical signs include a clunk over bumps, or a torn or walked-out bushing you can see. Press the new bushing square. A cocked bushing will tear in a few thousand miles.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS RB890.
Piston Ring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HASTINGS MANUFACTURING Popular | 6817 | 🇺🇸 US 🇨🇦 CA | Full SetPlain Cast Top Ring | View on Amazon |
| HASTINGS MANUFACTURING | 2C6817 | 🇺🇸 US 🇨🇦 CA | Full SetChrome Top Ring | View on Amazon |
| HASTINGS MANUFACTURING | 2C6817S | 🇺🇸 US 🇨🇦 CA | 1 Cylinder SetChrome Top Ring | View on Amazon |
| HASTINGS MANUFACTURING | 6817S | 🇺🇸 US 🇨🇦 CA | 1 Cylinder SetFor 2 Ring Piston | View on Amazon |
| ITM ENGINE COMPONENTS | 0211353 | 🇺🇸 US 🇨🇦 CA | Set | View on Amazon |
This table covers the rings that seal each piston to the cylinder wall.
5 Piston Ring parts for the 1973 Triumph TR6 come from 2 brands — HASTINGS MANUFACTURING and ITM ENGINE COMPONENTS. The "Popular" part is HASTINGS MANUFACTURING 6817.
Listed part numbers: HASTINGS MANUFACTURING 6817, HASTINGS MANUFACTURING 2C6817 and HASTINGS MANUFACTURING 2C6817S, plus the other parts above.
Thrust Washer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 1T2407 | 🇺🇸 US 🇨🇦 CA | (Size: Standard) | View on Amazon |
This table covers the Thrust washers.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS 1T2407.
Timing Belt Pulley
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 0513860 | 🇺🇸 US 🇨🇦 CA | Bearing Only | View on Amazon |
| BECK/ARNLEY | 0513954 | 🇺🇸 US 🇨🇦 CA | Bearing Only | View on Amazon |
This table covers the Timing Belt pulleys. Typical signs include a growl or chirp that follows engine speed, or a pulley that will not spin freely by hand. Spin each pulley with the belt off. Roughness or play means replace it with the belt.
BECK/ARNLEY supplies both parts for the 1973 Triumph TR6.
Listed part numbers: BECK/ARNLEY 0513860 and BECK/ARNLEY 0513954.
Timing Chain
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| INA | ZC3DR62 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| S.A. GEAR | 3DR62 | 🇨🇦 CA | Chain | View on Amazon |
This table covers the timing chains that keep the cams in time with the crank.
2 Timing Chain parts for the 1973 Triumph TR6 come from 2 brands — INA and S.A. GEAR.
Listed part numbers: INA ZC3DR62 and S.A. GEAR 3DR62.
Timing Cover Repair Sleeve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKF | 99199 | 🇺🇸 US 🇨🇦 CA | Shaft Diameter: 2.000 In | View on Amazon |
This table covers the wear sleeves used to restore a Timing Cover seal surface.
One part is listed for the 1973 Triumph TR6 — SKF 99199.
Timing Cover Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 1505601 | 🇺🇸 US 🇨🇦 CA | TC | View on Amazon |
| SKF | 19993 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the seals at the Timing Cover. 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 Timing Cover Seal parts are listed for the 1973 Triumph TR6, from ITM ENGINE COMPONENTS and SKF.
Listed part numbers: ITM ENGINE COMPONENTS 1505601 and SKF 19993.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO Popular | VS26040 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ITM ENGINE COMPONENTS | 0935601 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ITM ENGINE COMPONENTS | 0955603 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| MAHLE / CLEVITE | VS30029 | 🇺🇸 US 🇨🇦 CA | Cork-Rubber | View on Amazon |
| VICTOR REINZ | 711529400 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the gaskets that seal the valve cover 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.
5 Valve Cover Gasket parts are listed for the 1973 Triumph TR6, from ITM ENGINE COMPONENTS, FEL-PRO, MAHLE / CLEVITE and 1 other brand. FEL-PRO VS26040 carries the "Popular" badge.
Part numbers include FEL-PRO VS26040, ITM ENGINE COMPONENTS 0935601 and ITM ENGINE COMPONENTS 0955603, among others listed above.
Valve Guide
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | VG174CI | 🇺🇸 US 🇨🇦 CA | Cast Iron | View on Amazon |
| ITM ENGINE COMPONENTS | VG538CI | 🇺🇸 US 🇨🇦 CA | Cast Iron | View on Amazon |
| ITM ENGINE COMPONENTS | VG174BR | 🇺🇸 US 🇨🇦 CA | Bronze | View on Amazon |
| ITM ENGINE COMPONENTS | VG538BR | 🇺🇸 US 🇨🇦 CA | Bronze | View on Amazon |
This table covers the pressed-in bronze and cast-iron guides that align valve stems. Typical signs include oil smoke on startup, a guide that has gone oval, or a valve that no longer seats quietly. Guides are a machine-shop fit. Confirm stem diameter in the notes before ordering.
ITM ENGINE COMPONENTS supplies the 4 Valve Guide parts for the 1973 Triumph TR6.
Listed part numbers: ITM ENGINE COMPONENTS VG174CI, ITM ENGINE COMPONENTS VG538CI and ITM ENGINE COMPONENTS VG174BR, plus the other parts above.
Valve Lifter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 0565021 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the lifters / tappets that transfer cam motion to the valves.
One part is listed for the 1973 Triumph TR6 — ITM ENGINE COMPONENTS 0565021.
Valve Spring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | VS1176 | 🇺🇸 US 🇨🇦 CA | Intake Outer | View on Amazon |
| ITM ENGINE COMPONENTS | VS1426 | 🇺🇸 US 🇨🇦 CA | Intake Inner | View on Amazon |
This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats.
2 Valve Spring parts for the 1973 Triumph TR6 come from ITM ENGINE COMPONENTS.
Part numbers include ITM ENGINE COMPONENTS VS1176 and ITM ENGINE COMPONENTS VS1426.
Valve Spring Retainer
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ITM ENGINE COMPONENTS | 051309 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Valve Spring retainers.
This group shows a single part: ITM ENGINE COMPONENTS 051309.
Valve Spring Shim
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PIONEER | B106 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Valve Spring shims.
One part is listed for the 1973 Triumph TR6 — PIONEER B106.
Buying Engine Parts for a 1973 Triumph TR6
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 2.5L L6 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 1973 Triumph TR6?
Our catalog currently lists 64 engine parts for the 1973 Triumph TR6 across 28 subcategories and 20 brands, covering the 2.5L L6 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 1973 Triumph TR6?
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 1973 Triumph TR6 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 1973 Triumph TR6?
Every part on this page is matched to the 2.5L L6 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 1973 Triumph TR6
Engine Parts for Other Triumph TR6 Years
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