2018 BMW 318I Engine Parts

Engine:
1.5L L3 Turbocharged

The 2018 BMW 318I has 35 engine parts with verified fitment on this page — 20 part types and 12 brands, covering the 1.5L L3 Turbocharged engine. Each part includes a manufacturer part number and application notes.

The engine on the 2018 BMW 318I 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 Oil Filter (7 parts), Valve Stem Seal (4 parts) and Turbocharger Gasket (3 parts). The other 17 part types cover the remaining 21 parts.

Conversion / Lower Gasket Set

Brand Part Number Markets Notes Buy
AJUSA 54263400
🇲🇽 MX
Engine # B38B15A
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ELRING 702530
🇲🇽 MX
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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.

Crankshaft Seal

Brand Part Number Markets Notes Buy
AJUSA 15107900
🇲🇽 MX
RearCounter Clockwise
Fitment notes — AJUSA 15107900
RearCounter ClockwiseEngine # B38B15A
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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.

Cylinder Head Bolt

Brand Part Number Markets Notes Buy
AJUSA 81064700
🇲🇽 MX
Engine # B38B15A
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This table covers the bolts that clamp the cylinder head to the block.

Cylinder Head Gasket

Brand Part Number Markets Notes Buy
AJUSA 10220800
🇲🇽 MX
Multi Layered Steel
Fitment notes — AJUSA 10220800
Multi Layered Steel
83 Bore DiameterEngine # B38B15A
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AJUSA 10220810
🇲🇽 MX
Multi Layered Steel
Fitment notes — AJUSA 10220810
Multi Layered Steel
83 Bore DiameterEngine # B38B15A(+0.30) Thickness
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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.

Cylinder Head Gasket Set

Brand Part Number Markets Notes Buy
AJUSA 52438500
🇲🇽 MX
Engine # B38B15A
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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.

Engine Kit Gasket Set

Brand Part Number Markets Notes Buy
AJUSA 50452800
🇲🇽 MX
Engine # B38B15A
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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.

Intake Manifold Gasket

Brand Part Number Markets Notes Buy
AJUSA 24039500
🇲🇽 MX
Engine # B38B15A
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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.

Oil Cooler

Brand Part Number Markets Notes Buy
MARELLI RO0044
🇲🇽 MX
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This table covers the heat exchangers that cool engine oil. Typical signs include oil at the cooler fittings, or coolant that looks like a milkshake. Pressure-test both circuits after a cooler swap — a leak here mixes oil and coolant.

Oil Cooler Gasket

Brand Part Number Markets Notes Buy
AJUSA 77005900
🇲🇽 MX
UpperEngine # B38B15A
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AJUSA 77006000
🇲🇽 MX
LowerEngine # B38B15A
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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.

Oil Drain Plug

Brand Part Number Markets Notes Buy
AGS ODP00010
🇲🇽 MX
M12x1.50
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DORMAN 090088
🇲🇽 MX
MetalStandard
Fitment notes — DORMAN 090088
MetalStandardThread SizeM12-1.50Under-Head Length: 16.95mmHead Size: 17mmHead Style: Hex
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This table covers the drain plugs in the oil pan.

Oil Drain Plug Gasket

Brand Part Number Markets Notes Buy
AJUSA 21010400
🇲🇽 MX
Engine # B38B15Awith Original Equipment (OE) # 7119963132
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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.

Oil Filler Cap

Brand Part Number Markets Notes Buy
MOTORAD MO156
🇲🇽 MX
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This table covers the caps on the oil filler neck.

Oil Filter

Economy

Brand Part Number Markets Notes Buy
PRO-TEC Popular PXL10358
🇲🇽 MX
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FVP G0358
🇲🇽 MX
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High Performance / Heavy Duty

Brand Part Number Markets Notes Buy
MOBIL M1C354A
🇲🇽 MX
Extended Performance
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WIX WL10358XP
🇲🇽 MX
XP Extreme DutyBest for Synthetic Motor Oils
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Standard Replacement

Brand Part Number Markets Notes Buy
MANN Popular HU60141Z
🇲🇽 MX
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VARIOUS MFR PO99460EX
🇲🇽 MX
Extended Life
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WIX WL10358
🇲🇽 MX
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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.

Turbocharger Gasket

Brand Part Number Markets Notes Buy
AJUSA JTC11989
🇲🇽 MX
Mounting Gasket Set
Fitment notes — AJUSA JTC11989
Mounting Gasket Set
Engine # B38B15A
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ELRING 087320
🇲🇽 MX
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ELRING 074140
🇲🇽 MX
Suction PipeInlet Gasket
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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.

Turbocharger Oil Line

Brand Part Number Markets Notes Buy
AJUSA OP10929
🇲🇽 MX
Engine # B38B15ASupply Tube
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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.

Turbocharger Oil Line Gasket / O-Ring

Brand Part Number Markets Notes Buy
AJUSA 16006101
🇲🇽 MX
Turbocharger Coolant Line O-Ring
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This table covers the Turbocharger Oil Line Gasket O-rings. Typical signs include a seep at a fitting or a housing that weeps after a service. Lube the new O-ring with the fluid it will see, and do not roll it into the groove.

Valve Cover

Brand Part Number Markets Notes Buy
DORMAN 264758
🇲🇽 MX
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This table covers the Valve covers.

Valve Cover Gasket

Brand Part Number Markets Notes Buy
AJUSA 11140200
🇲🇽 MX
Engine # B38B15A
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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.

Valve Lifter

Brand Part Number Markets Notes Buy
AJUSA 85022300
🇲🇽 MX
Engine # B38B15A
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This table covers the lifters / tappets that transfer cam motion to the valves.

Valve Stem Seal

Brand Part Number Markets Notes Buy
AJUSA 12027900
🇲🇽 MX
Intake4.5 x 9.8 x 21.5
Fitment notes — AJUSA 12027900
Intake4.5 x 9.8 x 21.5Engine # B38B15A
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AJUSA 12028200
🇲🇽 MX
Exhaust5.2 x 9.8 x 21.15
Fitment notes — AJUSA 12028200
Exhaust5.2 x 9.8 x 21.15Engine # B38B15A
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AJUSA 57073800
🇲🇽 MX
Engine # B38B15A
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ELRING 364510
🇲🇽 MX
Height: 21mmDiameter: 6mm
Fitment notes — ELRING 364510
Height: 21mmDiameter: 6mmInner Diameter: 10mmOuter Diameter: 22.7mmwith OEM # 11340034055, 11340034069, 11340035853, 11340038720Green
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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.

Buying Engine Parts for a 2018 BMW 318I

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: Oil Filter and Valve Stem Seal .

Frequently Asked Questions

How many engine parts fit the 2018 BMW 318I?

Our catalog currently lists 35 engine parts for the 2018 BMW 318I across 20 subcategories and 12 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 2018 BMW 318I?

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 2018 BMW 318I 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 2018 BMW 318I?

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 2018 BMW 318I

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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.