38 Engine parts are listed for the 2021 Cupra Leon, in 22 part types, covering the 2.0L L4 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Cupra Leon, 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. Most of the listed parts are Valve Stem Seal (5 parts), Crankshaft Seal (4 parts) and Oil Filter (3 parts). The other 19 part types cover the remaining 26 parts.
The 2021 Cupra Leon came with a single engine, the 2.0L L4 Turbocharged, and every part is verified against it.
4 brands supply engine parts for the 2021 Cupra Leon, led by ELRING (19 parts), AJUSA (16 parts) and MOBIL (2 parts), plus 1 more brand. Quality grades include High Performance / Heavy Duty and Standard Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Cupra Leon. 1 part has it: ELRING 724590 (Valve Stem Seal). Each part number opens a page with every vehicle that part fits.
Connecting Rod Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 038970 | 🇲🇽 MX | Bolt Head-/Nut Design: Male TorxThread Size: M9X1X50 | View on Amazon |
This table covers the Connecting Rod bolts.
This group shows a single part: ELRING 038970.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 54326200 | 🇲🇽 MX | 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.
One part is listed for the 2021 Cupra Leon — AJUSA 54326200.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 15103300 | 🇲🇽 MX | FrontClockwise | View on Amazon |
| AJUSA | 71013900 | 🇲🇽 MX | Rear | View on Amazon |
| ELRING | 248300 | 🇲🇽 MX | Height [MM]: 8Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber) | View on Amazon |
| ELRING | 798660 | 🇲🇽 MX | Material: PTFE (polytetrafluoroethylene)/ACM (polyacrylate rubber)Radial Shaft Seal Design: SP | 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.
4 Crankshaft Seal parts for the 2021 Cupra Leon come from 2 brands — AJUSA and ELRING.
Part numbers include AJUSA 15103300, AJUSA 71013900 and ELRING 248300, among others listed above.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 81077400 | 🇲🇽 MX | View on Amazon | |
| ELRING | 112130 | 🇲🇽 MX | Set | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
2 Cylinder Head Bolt parts are listed for the 2021 Cupra Leon, from AJUSA and ELRING.
This group includes AJUSA 81077400 and ELRING 112130.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 10268400 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| ELRING | 893170 | 🇲🇽 MX | Material: Metalofl | 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.
2 Cylinder Head Gasket parts are listed for the 2021 Cupra Leon, from AJUSA and ELRING.
Listed part numbers: AJUSA 10268400 and ELRING 893170.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 52626100 | 🇲🇽 MX | 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.
One part is listed for the 2021 Cupra Leon — AJUSA 52626100.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 50559000 | 🇲🇽 MX | 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.
One part is listed for the 2021 Cupra Leon — AJUSA 50559000.
Intake Manifold Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 13245500 | 🇲🇽 MX | View on Amazon | |
| ELRING | 297590 | 🇲🇽 MX | Material: Fluoroelastomer (FPM) | View on Amazon |
This table covers the gaskets between the intake manifold and 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.
2 Intake Manifold Gasket parts are listed for the 2021 Cupra Leon, from AJUSA and ELRING.
Part numbers include AJUSA 13245500 and ELRING 297590.
Intermediate Shaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 299640 | 🇲🇽 MX | Outer Diameter [MM]: 32 | View on Amazon |
This table covers the seals at the Intermediate Shaft. 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.
This group shows a single part: ELRING 299640.
Oil Cooler Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 279610 | 🇲🇽 MX | View on Amazon |
This table covers the gaskets that seal the Oil Cooler. 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 2021 Cupra Leon — ELRING 279610.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 858050 | 🇲🇽 MX | with Seal RingBolt Head/Nut Design: Female Torx | View on Amazon |
| ELRING | 858040 | 🇲🇽 MX | without Seal RingBolt Head/Nut Design: Female Torx | View on Amazon |
This table covers the drain plugs in the oil pan.
2 Oil Drain Plug parts for the 2021 Cupra Leon come from ELRING.
This group includes ELRING 858050 and ELRING 858040.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 18001000 | 🇲🇽 MX | View on Amazon | |
| ELRING | 591840 | 🇲🇽 MX | Material: Steel | View on Amazon |
This table covers the crush washers and gaskets under the oil drain plug. 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.
2 Oil Drain Plug Gasket parts are listed for the 2021 Cupra Leon, from AJUSA and ELRING.
Listed part numbers: AJUSA 18001000 and ELRING 591840.
Oil Filter
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL | M1C258A | 🇲🇽 MX | Extended PerformanceStyle: Cartridge Lube Metal Free Filter | View on Amazon |
| MOBIL | M1C258 | 🇲🇽 MX | Extended Performance15,000 Mile Warranty | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PG8161EX | 🇲🇽 MX | Extended LifeCartridge Filter | 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.
3 Oil Filter parts for the 2021 Cupra Leon come from 2 brands — MOBIL and VARIOUS MFR.
The High Performance / Heavy Duty section lists 2 options from MOBIL — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1C258A is listed in this group.
In the Standard Replacement grade, VARIOUS MFR supplies 1 part: built to original-equipment specification. A representative part number is VARIOUS MFR PG8161EX.
Listed part numbers: MOBIL M1C258A, MOBIL M1C258 and VARIOUS MFR PG8161EX.
Oil Filter Housing Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 279630 | 🇲🇽 MX | View on Amazon |
This table covers the seals at the Oil Filter Housing. 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.
This group shows a single part: ELRING 279630.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 030793 | 🇲🇽 MX | Dirko HT | 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.
This group shows a single part: ELRING 030793.
Timing Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 893790 | 🇲🇽 MX | Material: ACM (Polyacrylate) | View on Amazon |
| ELRING | 893820 | 🇲🇽 MX | CYLINDER HEAD | View on Amazon |
| ELRING | 031320 | 🇲🇽 MX | Number of Seals: 3 | View on Amazon |
This table covers the gaskets that seal the Timing Cover. 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.
3 Timing Cover Gasket parts for the 2021 Cupra Leon come from ELRING.
Listed part numbers: ELRING 893790, ELRING 893820 and ELRING 031320.
Turbocharger Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | JTC12738 | 🇲🇽 MX | Mounting Gasket Set | View on Amazon |
This table covers the gaskets that seal the Turbocharger. 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 2021 Cupra Leon — AJUSA JTC12738.
Turbocharger Mounting Hardware
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 033070 | 🇲🇽 MX | with gaskets/sealswith Bolts/Screws | View on Amazon |
This table covers the fasteners that mount the turbocharger.
One part is listed for the 2021 Cupra Leon — ELRING 033070.
Turbocharger Oil Line
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | OP11313 | 🇲🇽 MX | Supply tube | View on Amazon |
This table covers the Turbocharger Oil lines. Typical signs include a wet fitting, a rusted pipe, or a pressure loss in this circuit. Flare or thread the new line the way the notes specify; a kinked replacement will fail early.
This group shows a single part: AJUSA OP11313.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 75000400 | 🇲🇽 MX | 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.
This group shows a single part: AJUSA 75000400.
Valve Lifter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 85009000 | 🇲🇽 MX | View on Amazon |
This table covers the lifters / tappets that transfer cam motion to the valves.
This group shows a single part: AJUSA 85009000.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING Popular | 724590 | 🇲🇽 MX | Colour: BlackHeight [MM]: 9,3 | View on Amazon |
| AJUSA | 12021100 | 🇲🇽 MX | Intake | View on Amazon |
| AJUSA | 12035500 | 🇲🇽 MX | Exhaust5.5 x 8.2 x 10.9 | View on Amazon |
| AJUSA | 57077800 | 🇲🇽 MX | View on Amazon | |
| ELRING | 797560 | 🇲🇽 MX | Colour: BrownOutside Diameter: 12.4 mm | View on Amazon |
This table covers the seals on each valve stem that control oil into the guides. 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 Valve Stem Seal parts for the 2021 Cupra Leon come from 2 brands — AJUSA and ELRING. The "Popular" part is ELRING 724590.
Listed part numbers: ELRING 724590, AJUSA 12021100 and AJUSA 12035500, plus the other parts above.
Buying Engine Parts for a 2021 Cupra Leon
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 2.0L L4 Turbocharged 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: Valve Stem Seal and Crankshaft Seal .
Frequently Asked Questions
How many engine parts fit the 2021 Cupra Leon?
Our catalog currently lists 38 engine parts for the 2021 Cupra Leon across 22 subcategories and 4 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2021 Cupra Leon?
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 2021 Cupra Leon 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 2021 Cupra Leon?
Every part on this page is matched to the 2.0L L4 Turbocharged 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 2021 Cupra Leon
Engine Parts for Other Cupra Leon Years
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