This page lists 22 engine parts for the 2018 Mitsubishi Montero, across 15 part types, covering the 3.8L V6 engine. Every part shows its brand, manufacturer part number and fitment notes.
The engine on the 2018 Mitsubishi Montero 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 Cylinder Head Gasket (4 parts), Valve Stem Seal (3 parts) and Crankshaft Seal (2 parts). The other 12 part types cover the remaining 13 parts.
The 2018 Mitsubishi Montero came with a single engine, the 3.8L V6, and every part is verified against it.
5 brands supply engine parts for the 2018 Mitsubishi Montero, led by AJUSA (17 parts), VARIOUS MFR (2 parts) and MOTORAD (1 part), plus 2 more brands. Quality grades include Economy and Standard Replacement.
Each part number listed for the 2018 Mitsubishi Montero opens a page with every vehicle that part fits.
Camshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 15013300 | 🇲🇽 MX | 35 x 50 x 8Clockwise | View on Amazon |
This table covers the seals at each camshaft end. 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: AJUSA 15013300.
Conversion / Lower Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 54251800 | 🇲🇽 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 2018 Mitsubishi Montero — AJUSA 54251800.
Crankshaft Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 15093400 | 🇲🇽 MX | FrontClockwise | View on Amazon |
| AJUSA | 15098500 | 🇲🇽 MX | RearCounter Clockwise | 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 2018 Mitsubishi Montero come from AJUSA.
Listed part numbers: AJUSA 15093400 and AJUSA 15098500.
Cylinder Head Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 81063400 | 🇲🇽 MX | View on Amazon |
This table covers the bolts that clamp the cylinder head to the block.
One part is listed for the 2018 Mitsubishi Montero — AJUSA 81063400.
Cylinder Head Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 10216600 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA | 10216700 | 🇲🇽 MX | Multi Layered Steel | View on Amazon |
| AJUSA | 52413600 | 🇲🇽 MX | Right | View on Amazon |
| AJUSA | 52413700 | 🇲🇽 MX | Left | 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 the 4 Cylinder Head Gasket parts for the 2018 Mitsubishi Montero.
This group includes AJUSA 10216600, AJUSA 10216700 and AJUSA 52413600 and the remaining parts above.
Cylinder Head Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 52413500 | 🇲🇽 MX | Complete 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.
One part is listed for the 2018 Mitsubishi Montero — AJUSA 52413500.
Engine Kit Gasket Set
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 50439000 | 🇲🇽 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 2018 Mitsubishi Montero — AJUSA 50439000.
Intake Manifold Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 13263300 | 🇲🇽 MX | 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 2018 Mitsubishi Montero — AJUSA 13263300.
Oil Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 22007300 | 🇲🇽 MX | 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 2018 Mitsubishi Montero — AJUSA 22007300.
Oil Filler Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | MO88 | 🇲🇽 MX | View on Amazon |
This table covers the caps on the oil filler neck.
This group shows a single part: MOTORAD MO88.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PG4459 | 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR | PG4459EX | 🇲🇽 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.
2 Oil Filter parts for the 2018 Mitsubishi Montero come from VARIOUS MFR.
The Economy section lists 1 option from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PG4459 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 PG4459EX.
Part numbers include VARIOUS MFR PG4459 and VARIOUS MFR PG4459EX.
Oil Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 264288 | 🇲🇽 MX | View on Amazon |
This table covers the oil pans that hold the engine's oil sump.
One part is listed for the 2018 Mitsubishi Montero — DORMAN 264288.
Timing Belt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BANDO | TB320 | 🇲🇽 MX | View on Amazon |
This table covers the Timing belts. Typical signs include squeal on cold start, cracked ribs, or glazing. Spin the tensioner and idlers by hand while the belt is off.
One part is listed for the 2018 Mitsubishi Montero — BANDO TB320.
Valve Cover Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 56059200 | 🇲🇽 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 56059200.
Valve Stem Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 12025000 | 🇲🇽 MX | Intake4.8 x 10.8 x 10.6 | View on Amazon |
| AJUSA | 12025100 | 🇲🇽 MX | Exhaust4.9 x 10.8 x 10.8 | View on Amazon |
| AJUSA | 57062500 | 🇲🇽 MX | 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 2018 Mitsubishi Montero come from AJUSA.
Part numbers include AJUSA 12025000, AJUSA 12025100 and AJUSA 57062500.
Buying Engine Parts for a 2018 Mitsubishi Montero
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 3.8L V6 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: Cylinder Head Gasket and Valve Stem Seal .
Frequently Asked Questions
How many engine parts fit the 2018 Mitsubishi Montero?
Our catalog currently lists 22 engine parts for the 2018 Mitsubishi Montero across 15 subcategories and 5 brands, covering the 3.8L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2018 Mitsubishi Montero?
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 Mitsubishi Montero 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 Mitsubishi Montero?
Every part on this page is matched to the 3.8L V6 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 Mitsubishi Montero
Engine Parts for Other Mitsubishi Montero Years
Switch vehicle or jump to a subcategory
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.