2018 BMW 430I Cooling System Parts

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. Read more

13 Coolant / Antifreeze parts are listed for the 2018 BMW 430I, from PRESTONE, PEAK, VALVOLINE and 2 other brands. FVP MV5050GAL carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, FVP, PRESTONE, PEAK and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is FVP MV5050GAL.

The Premium section lists 5 options from PRESTONE and PEAK — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 3 options from AISIN, PEAK and VALVOLINE — built to original-equipment specification. AISIN ACE008 is listed in this group.

This table covers the bleeders used to purge air from the coolant circuit. Read more

4 Coolant Air Bleeder parts for the 2018 BMW 430I come from 2 brands — DORMAN and SKP.

This group includes DORMAN 902404, DORMAN 902404HP and SKP SK902404 and the remaining parts above.

This table covers the hard pipes and extra hoses in the coolant circuit. Read more

8 Coolant Hose / Pipe parts are listed for the 2018 BMW 430I, from REIN, ÜRO PARTS and VAICO. REIN CHE0925 carries the "Popular" badge.

Part numbers include REIN CHE0925, ÜRO PARTS 17129845173 and REIN CHE0994, among others listed above.

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. Read more

This group shows a single part: ELRING 283410.

This table covers the Coolant Hose Connector flanges. Read more

5 Coolant Hose Connector / Flange parts are listed for the 2018 BMW 430I, from VAICO, REIN, MOTORAD and 1 other brand. REIN CHU0929 carries the "Popular" badge.

Listed part numbers: REIN CHU0929, MOTORAD CH7113 and VAICO V203560, plus the other parts above.

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. Read more

One part is listed for the 2018 BMW 430I — VAICO V202362.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

8 Coolant Reservoir parts for the 2018 BMW 430I come from 5 brands — REIN, MAHLE / CLEVITE, ÜRO PARTS and 2 other brands. The "Popular" part is REIN EPK0235.

Part numbers include REIN EPK0235, ÜRO PARTS 17138677649 and GPD 2411316, among others listed above.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

5 Coolant Reservoir Cap parts for the 2018 BMW 430I come from 3 brands — MOTORAD, CALORSTAT and REIN. The "Popular" part is MOTORAD T64.

This group includes MOTORAD T64, CALORSTAT RC0084 and CALORSTAT RC0083 and the remaining parts above.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

8 Radiator parts are listed for the 2018 BMW 430I, from NISSENS, KOYORAD, TYC and 1 other brand. KOYORAD A137821 carries the "Popular" badge.

Listed part numbers: KOYORAD A137821, KOYORAD A13782 and NISSENS 606863, plus the other parts above.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

5 Radiator Fan Assembly parts for the 2018 BMW 430I come from 3 brands — TECHPRO, FOUR SEASONS and SKP. The "Popular" part is SKP SK621303.

The Economy section: 3 options from TECHPRO and SKP. SKP SK621303 is listed in this group.

Standard Replacement: 2 parts, from FOUR SEASONS. A representative part number is FOUR SEASONS 75321.

Part numbers include SKP SK621303, TECHPRO BM3115131 and TECHPRO BM3115132, among others listed above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

3 Radiator Hose parts for the 2018 BMW 430I come from REIN.

This group includes REIN CHR0854, REIN CHR0860 and REIN CHR1047.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

8 Temperature Sender / Sensor parts are listed for the 2018 BMW 430I, from GPD, HOLSTEIN, STANDARD MOTOR PRODUCTS and 2 other brands. STANDARD MOTOR PRODUCTS TS658 carries the "Popular" badge.

Economy: 5 parts, from GPD and HOLSTEIN. A representative part number is GPD 1814534.

The Standard Replacement section: 3 options from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS and WELLS. STANDARD MOTOR PRODUCTS TS658 is listed in this group.

Listed part numbers: STANDARD MOTOR PRODUCTS TS658, GPD 1814534 and GPD 1814545, plus the other parts above.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

5 Thermostat parts for the 2018 BMW 430I come from 5 brands — ÜRO PARTS, MOTORAD, BECK/ARNLEY and 2 other brands. The "Popular" part is MOTORAD 1225221.

The Economy section: 1 option from ÜRO PARTS. ÜRO PARTS 11537644811 is listed in this group.

Standard Replacement: 4 parts, from MOTORAD, BECK/ARNLEY, FOUR SEASONS and 1 other brand. A representative part number is MOTORAD 1225221.

Part numbers include MOTORAD 1225221, ÜRO PARTS 11537644811 and BECK/ARNLEY 1430991, among others listed above.

This table covers the seals at the thermostat housing and water outlet. 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. Read more

One part is listed for the 2018 BMW 430I — MAHLE / CLEVITE C33608.

This table covers the housings and outlets the thermostat sits in. Read more

3 Thermostat Housing / Water Outlet parts for the 2018 BMW 430I come from 3 brands — SKP, VEMO and MOTORAD.

The Economy section: 2 options from SKP and VEMO. SKP SK121546 is listed in this group.

Standard Replacement: 1 part, from MOTORAD. A representative part number is MOTORAD CH7107.

Listed part numbers: SKP SK121546, VEMO V20991307 and MOTORAD CH7107.

This table covers the Thermostat Housing / Water Outlet 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. Read more

This group shows a single part: REIN CHM0981.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

9 Water Pump parts for the 2018 BMW 430I come from 6 brands — VAICO, BOSCH, SALERI and 3 other brands. The "Popular" part is BOSCH 0392023509.

The Economy section: 2 options from VAICO. VAICO V20500701 is listed in this group.

Standard Replacement: 7 parts, from BOSCH, SALERI, GATES and 2 other brands. A representative part number is BOSCH 0392023509.

Part numbers include BOSCH 0392023509, VAICO V20500701 and VAICO V2050070, among others listed above.