This page lists 29 engine parts for the 2026 BMW 840I, across 13 part types, covering the 3.0L L6 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
The engine on the 2026 BMW 840I 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), Oil (6 parts) and Oil Cooler (2 parts). The other 10 part types cover the remaining 14 parts.
Every part on this page is matched to the 3.0L L6 Turbocharged — the only engine offered in the 2026 BMW 840I.
The most listed brands for 2026 BMW 840I engine parts are REIN (11 parts), LIQUI MOLY (3 parts) and PENTOSIN (2 parts), plus 12 more brands. Quality grades include Standard Replacement, Economy and High Performance / Heavy Duty.
4 parts on this 2026 BMW 840I page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including LIQUI MOLY 22044 (Oil) and HENGST E859HD352 (Oil Filter). Click any part number to see every vehicle that part fits.
Harmonic Balancer Bolt
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWB0074 | 🇺🇸 US | 10 x 65mm | View on Amazon |
This table covers the Harmonic Balancer bolts.
One part is listed for the 2026 BMW 840I — REIN HWB0074.
Oil
Summary: Notes list SAE 0W-20. Confirm the weight on the filler cap before you buy. Replacement brands in this table include LIQUI MOLY, PENTOSIN and VALVOLINE.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LIQUI MOLY Popular | 22044 | 🇺🇸 US | Top Tec 6600 0W-201 Liter | View on Amazon |
| LIQUI MOLY Popular | 22046 | 🇺🇸 US | Top Tec 6600 0W-205 Liter | View on Amazon |
| LIQUI MOLY | 22048 | 🇺🇸 US | Top Tec 6600 0W-2020 Liter | View on Amazon |
| PENTOSIN | 8044317 | 🇺🇸 US | Pento Speed FESAE 0W-20 | View on Amazon |
| PENTOSIN | 8044319 | 🇺🇸 US | Pento Speed FESAE 0W-20 | View on Amazon |
| VALVOLINE | 888048 | 🇺🇸 US | European Vehicle Full Synthetic SAE 0W-201 Quart | View on Amazon |
This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable.
6 Oil parts are listed for the 2026 BMW 840I, from LIQUI MOLY, PENTOSIN and VALVOLINE. LIQUI MOLY 22044 carries the "Popular" badge.
This group includes LIQUI MOLY 22044, LIQUI MOLY 22046 and LIQUI MOLY 22048 and the remaining parts above.
Oil Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS | 91359 | 🇺🇸 US | without Housing | View on Amazon |
| REIN | ECK0273 | 🇺🇸 US | View on Amazon |
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.
2 Oil Cooler parts are listed for the 2026 BMW 840I, from NISSENS and REIN.
Part numbers include NISSENS 91359 and REIN ECK0273.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWU1041 | 🇺🇸 US | View on Amazon |
This table covers the drain plugs in the oil pan.
One part is listed for the 2026 BMW 840I — REIN HWU1041.
Oil Filler Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | MO214 | 🇺🇸 US | View on Amazon |
This table covers the caps on the oil filler neck.
One part is listed for the 2026 BMW 840I — MOTORAD MO214.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | G0342 | 🇺🇸 US | View on Amazon | |
| PRO-TEC | PXL10342 | 🇺🇸 US | View on Amazon |
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL | M1C457A | 🇺🇸 US | Extended Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HENGST Popular | E859HD352 | 🇺🇸 US | Includes Gasket SetCartridge | View on Amazon |
| MANN Popular | HU6022Z | 🇺🇸 US | View on Amazon | |
| VARIOUS MFR | PG99256EX | 🇺🇸 US | Extended Life | View on Amazon |
| WIX | WL10342 | 🇺🇸 US | 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.
7 Oil Filter parts are listed for the 2026 BMW 840I, from FVP, PRO-TEC, MOBIL and 4 other brands. HENGST E859HD352 carries the "Popular" badge.
In the Economy grade, FVP and PRO-TEC supply 2 parts: the catalog's value-priced group. A representative part number is FVP G0342.
In the High Performance / Heavy Duty grade, MOBIL supplies 1 part: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is MOBIL M1C457A.
The Standard Replacement section lists 4 options from HENGST, MANN, VARIOUS MFR and 1 other brand — built to original-equipment specification. HENGST E859HD352 is listed in this group.
Listed part numbers: HENGST E859HD352, FVP G0342 and PRO-TEC PXL10342, plus the other parts above.
Oil Filter Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | MO388 | 🇺🇸 US | View on Amazon | |
| REIN | CPL0070 | 🇺🇸 US | View on Amazon |
This table covers the Oil Filter covers.
2 Oil Filter Cover parts for the 2026 BMW 840I come from 2 brands — MOTORAD and REIN.
This group includes MOTORAD MO388 and REIN CPL0070.
Oil Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | ESK0247 | 🇺🇸 US | Kit | View on Amazon |
| REIN | ESK0249 | 🇺🇸 US | Kit | View on Amazon |
This table covers the oil pans that hold the engine's oil sump.
2 Oil Pan parts for the 2026 BMW 840I come from REIN.
This group includes REIN ESK0247 and REIN ESK0249.
Turbocharger Coolant Line
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | CHT0972 | 🇺🇸 US | Return | View on Amazon |
| REIN | CHT0971 | 🇺🇸 US | Supply | View on Amazon |
This table covers the Turbocharger Coolant 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.
REIN supplies both parts for the 2026 BMW 840I.
This group includes REIN CHT0972 and REIN CHT0971.
Turbocharger Mounting Hardware
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | TRK0024 | 🇺🇸 US | View on Amazon |
This table covers the fasteners that mount the turbocharger.
This group shows a single part: REIN TRK0024.
Turbocharger Oil Line
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | TFP0393 | 🇺🇸 US | Supply Line | View on Amazon |
| REIN | TRP0391 | 🇺🇸 US | Return Line | 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.
REIN supplies both parts for the 2026 BMW 840I.
Listed part numbers: REIN TFP0393 and REIN TRP0391.
Valve Cover
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP | SK743462 | 🇺🇸 US | View on Amazon |
This table covers the Valve covers.
This group shows a single part: SKP SK743462.
Variable Valve Timing (VVT) Solenoid Gasket / Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AJUSA | 01907000 | 🇺🇸 US | View on Amazon |
This table covers the seals at the Variable Valve Timing (VVT) Solenoid Gasket. 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 01907000.
Buying Engine Parts for a 2026 BMW 840I
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 3.0L L6 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 Oil .
Frequently Asked Questions
How many engine parts fit the 2026 BMW 840I?
Our catalog currently lists 29 engine parts for the 2026 BMW 840I across 13 subcategories and 15 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2026 BMW 840I?
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 oil viscosity is listed for the 2026 BMW 840I?
Oil rows on this page include SAE 0W-20. Confirm the engine and the weight on the filler cap before you buy — high-mileage and standard fills can differ.
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 2026 BMW 840I 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 2026 BMW 840I?
Every part on this page is matched to the 3.0L L6 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 2026 BMW 840I
Engine Parts for Other BMW 840I 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.