This page lists 24 engine parts for the 2021 BMW 118I, across 18 part types, covering the 1.5L L3 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 BMW 118I, 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 Turbocharger Gasket (3 parts), Valve Stem Seal (3 parts) and Crankshaft Seal (2 parts). The other 15 part types cover the remaining 16 parts.
The 2021 BMW 118I came with a single engine, the 1.5L L3 Turbocharged, and every part is verified against it.
4 brands supply engine parts for the 2021 BMW 118I, led by AJUSA (19 parts), DORMAN (2 parts) and ELRING (2 parts), plus 1 more brand.
Each part number listed for the 2021 BMW 118I opens a page with every vehicle that part fits.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 54297700 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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 BMW 118I — AJUSA 54297700.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 15107900 | 🇲🇽 MX | RearCounter Clockwise | View on Amazon |
| AJUSA | 71016200 | 🇲🇽 MX | FrontEngine # B38A15F | 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.
2 Crankshaft Seal parts for the 2021 BMW 118I come from AJUSA.
Listed part numbers: AJUSA 15107900 and AJUSA 71016200.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 81065000 | 🇲🇽 MX | Engine # B38A15A,B38A15F | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
One part is listed for the 2021 BMW 118I — AJUSA 81065000.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 10248000 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA | 10248010 | 🇲🇽 MX | Multi Layered Steel | 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.
AJUSA supplies both parts for the 2021 BMW 118I.
Part numbers include AJUSA 10248000 and AJUSA 10248010.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 52554500 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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 BMW 118I — AJUSA 52554500.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 50507400 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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 BMW 118I — AJUSA 50507400.
Intake Manifold Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 24039500 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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.
One part is listed for the 2021 BMW 118I — AJUSA 24039500.
Oil Cooler Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 77010600 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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 BMW 118I — AJUSA 77010600.
Oil Dipstick / Tube
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 9175509 | 🇲🇽 MX | Dipstick OnlyVolvo VHD 2012-03, Volvo VN 2012-03, Volvo VNL 2012-03, Volvo VNM 2012-03, Volvo VT 2012-03 | View on Amazon |
This table covers the Oil Dipstick tubes.
This group shows a single part: DORMAN 9175509.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 090088 | 🇲🇽 MX | MetalStandard | View on Amazon |
This table covers the drain plugs in the oil pan.
This group shows a single part: DORMAN 090088.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 21010400 | 🇲🇽 MX | Engine # B38A15A,B38A15Fwith Original Equipment (OE) # 7119963132 | 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.
One part is listed for the 2021 BMW 118I — AJUSA 21010400.
Oil Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PO99521EX | 🇲🇽 MX | Extended Life | 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: VARIOUS MFR PO99521EX.
Timing Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 77090500 | 🇲🇽 MX | 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.
This group shows a single part: AJUSA 77090500.
Turbocharger Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | JTC12483 | 🇲🇽 MX | Mounting Gasket Set | View on Amazon |
| ELRING | 094830 | 🇲🇽 MX | Charge Air Hose | View on Amazon |
| ELRING | 087320 | 🇲🇽 MX | 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.
3 Turbocharger Gasket parts are listed for the 2021 BMW 118I, from ELRING and AJUSA.
Listed part numbers: AJUSA JTC12483, ELRING 094830 and ELRING 087320.
Turbocharger Oil Line
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | OP11192 | 🇲🇽 MX | Engine # B38A15A,B38A15FSupply 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 OP11192.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 11162600 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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 11162600.
Valve Lifter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 85022300 | 🇲🇽 MX | Engine # B38A15A,B38A15F | View on Amazon |
This table covers the lifters / tappets that transfer cam motion to the valves.
This group shows a single part: AJUSA 85022300.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 12027900 | 🇲🇽 MX | Intake4.5 X 9.8 X 21.5 | View on Amazon |
| AJUSA | 12028200 | 🇲🇽 MX | Exhaust5.2 X 9.8 X 21.15 | View on Amazon |
| AJUSA | 57073800 | 🇲🇽 MX | Engine # B38A15A,B38A15F | 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.
3 Valve Stem Seal parts for the 2021 BMW 118I come from AJUSA.
Listed part numbers: AJUSA 12027900, AJUSA 12028200 and AJUSA 57073800.
Buying Engine Parts for a 2021 BMW 118I
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 1.5L L3 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: Turbocharger Gasket and Valve Stem Seal .
Frequently Asked Questions
How many engine parts fit the 2021 BMW 118I?
Our catalog currently lists 24 engine parts for the 2021 BMW 118I across 18 subcategories and 4 brands, covering the 1.5L L3 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2021 BMW 118I?
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 BMW 118I 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 BMW 118I?
Every part on this page is matched to the 1.5L L3 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 BMW 118I
Engine Parts for Other BMW 118I Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.