This page lists 33 cooling system parts for the 2018 BMW 440I, across 7 part types, covering the 3.0L L6 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2018 BMW 440I, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. Most of the listed parts are Coolant / Antifreeze (13 parts), Coolant Reservoir (8 parts) and Coolant Air Bleeder (4 parts). The other 4 part types cover the remaining 8 parts.
Every part on this page is matched to the 3.0L L6 Turbocharged — the only engine offered in the 2018 BMW 440I.
The most listed brands for 2018 BMW 440I cooling system parts are REIN (9 parts), PRESTONE (5 parts) and PEAK (4 parts), plus 10 more brands. Quality grades include Premium, Economy and Standard Replacement.
5 parts on this 2018 BMW 440I page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including FVP MV5050GAL (Coolant / Antifreeze) and REIN EPK0235 (Coolant Reservoir). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
Compatible With All Colors
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF3055 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime YellowAll Vehicles | View on Amazon |
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP Popular | MV5050GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Extended LifeAll Makes / All Models | View on Amazon |
| PRESTONE Popular | AF3100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prime Yellow - All VehiclesExtended Life | View on Amazon |
| PEAK | BQA1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Blue Mountain Long LifeAll Vehicle | View on Amazon |
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE Popular | AF2100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | All Vehicles10yr/300k mi | View on Amazon |
| PEAK | PKP1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | All Vehicles Antifreeze1 Gallon | View on Amazon |
| PEAK | PXA1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 1 GallonGlobal Lifetime | View on Amazon |
| PRESTONE | AF6110 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MAX Original EquipmentEuropean Blue | View on Amazon |
| PRESTONE | AFMAX | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Max Universal1 Gallon | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AISIN | ACE008 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueHOAT | View on Amazon |
| PEAK | PEB1GAL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OET European Extended Life Blue1 Gallon | View on Amazon |
| VALVOLINE | 904685 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | HT-12 Green1 Gallon | View on Amazon |
This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator.
13 Coolant / Antifreeze parts for the 2018 BMW 440I come from 5 brands — PRESTONE, PEAK, VALVOLINE and 2 other brands. The "Popular" part is FVP MV5050GAL.
In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.
The Economy section lists 4 options from FVP, PRESTONE, PEAK and 1 other brand — the catalog's value-priced group. FVP MV5050GAL is listed in this group.
In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.
In the Standard Replacement grade, AISIN, PEAK and VALVOLINE supply 3 parts: built to original-equipment specification. A representative part number is AISIN ACE008.
Coolant Air Bleeder
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 902404 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Plastic | View on Amazon |
| DORMAN | 902404HP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE FIX | View on Amazon |
| SKP | SK902404 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Plastic | View on Amazon |
| SKP | SK902404HP | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BRASS | View on Amazon |
This table covers the bleeders used to purge air from the coolant circuit.
4 Coolant Air Bleeder parts are listed for the 2018 BMW 440I, from DORMAN and SKP.
Listed part numbers: DORMAN 902404, DORMAN 902404HP and SKP SK902404, plus the other parts above.
Coolant Hose / Pipe
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | CHE0994 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Expansion Tank (Upper) To Upper Radiator Hose | View on Amazon |
| REIN | CHE1003 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Thermostat To Pipe | View on Amazon |
| REIN | CHE1026 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Expansion Tank Radiator (Upper) To Cylinder Heads | View on Amazon |
This table covers the hard pipes and extra hoses in the coolant circuit.
3 Coolant Hose / Pipe parts for the 2018 BMW 440I come from REIN.
Listed part numbers: REIN CHE0994, REIN CHE1003 and REIN CHE1026.
Coolant Hose / Pipe Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ELRING | 249690 | 🇲🇽 MX | 440i Gran CoupeCoolant Pipe | View on Amazon |
This table covers the seals at the Coolant Hose / Pipe. 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.
One part is listed for the 2018 BMW 440I — ELRING 249690.
Coolant Hose Connector / Flange
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | CHU0940 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Engine Block To Radiator Hosewithout Sensor | View on Amazon |
| REIN | CHK0940 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Engine Block To Radiator Hosewith Sensor | View on Amazon |
This table covers the Coolant Hose Connector flanges.
2 Coolant Hose Connector / Flange parts for the 2018 BMW 440I come from REIN.
This group includes REIN CHU0940 and REIN CHK0940.
Coolant Hose Flange Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | CHM0562 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VAICO | V202821 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Dimensions: D=12 | View on Amazon |
This table covers the Coolant Hose Flange plugs. Typical signs include a leak at the drain or glow-plug hole, or a plug that has rounded off. Replace the crush washer and torque to the spec in the notes.
2 Coolant Hose Flange Plug parts for the 2018 BMW 440I come from 2 brands — REIN and VAICO.
Part numbers include REIN CHM0562 and VAICO V202821.
Coolant Reservoir
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Popular | EPK0235 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes OE cap and fluid level sensor | View on Amazon |
| ÜRO PARTS Popular | 17138677649 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | PRIMARY | View on Amazon |
| GPD | 2411316 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| MAHLE / CLEVITE | CRT246000S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Plastic | View on Amazon |
| MAHLE / CLEVITE | CRT245000S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Auxiliary440i Base Model or 440i xDrive Base Model | View on Amazon |
| REIN | EPT0259 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Intercoolerwithout Cap | View on Amazon |
| REIN | EPT0235 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Radiatorwithout Cap | View on Amazon |
| VAICO | V205117 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Right | View on Amazon |
This table covers the overflow / expansion tanks that hold extra coolant.
8 Coolant Reservoir parts are listed for the 2018 BMW 440I, from REIN, MAHLE / CLEVITE, ÜRO PARTS and 2 other brands. REIN EPK0235 carries the "Popular" badge.
Part numbers include REIN EPK0235, ÜRO PARTS 17138677649 and GPD 2411316, among others listed above.
Buying Cooling System Parts for a 2018 BMW 440I
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- 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 thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant / Antifreeze and Coolant Reservoir .
Frequently Asked Questions
How many cooling system parts fit the 2018 BMW 440I?
Our catalog currently lists 33 cooling system parts for the 2018 BMW 440I across 7 subcategories and 13 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2018 BMW 440I?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. 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 thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
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 440I 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 440I?
Every part on this page is matched to the 3.0L L6 Turbocharged engine. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 BMW 440I
Cooling System Parts for Other BMW 440I Years
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