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BMW Cooling System Parts & Accessories for BMW 1 Series E82 (2008-2013)

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Turner Motorsport - Upgraded Aluminum Expansion Tank Kit - E8X E9X N2...

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T#:12806793

Part#: 008378LA02

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$ 383.99 USD

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Our Turner Motorsport's full aluminum expansion tank was designed and engineered in house to help with the weak point in your N52/N54 cooling system. The coolant expansion tank goes through heat cycles over and over again from regular driving, it is important that your expansion tank is doing its job to retain coolant to keep your engine operating temperatures down and keep your engine bay clean. Not only is this a major upgrade but also a great maintenance item to replace. Our expansion tank was designed to fit the OEM hoses for an easy install and comes with all the upgraded items you will need for a clean install

If your BMW needs a new expansion tank, make sure this is the last expansion tank you ever need to buy. Our coolant expansion tank has a full aluminum construction and wrinkle black powder coat for durability. Expansion tank kit comes with all the accessories you need to replace your expansion tank once, and never have to worry about it again.

Product Features:

Maintains stock coolant capacity and expansion volume
Designed to maintain OE coolant elevation, preventing air pockets
Baffled tank ensures that air pockets cannot be introduced during aggressive driving and provides accurate coolant level reading
Carefully designed bleed passage prevents the introduction of air as the engine cools
Turner engraved internal fill level
TIG welded 5052 aluminum construction
All bungs are machined to fit factory hose ends
Kit contents:

Turner Aluminum Expansion Tank
Coolant level sensor
Expansion tank cap
Heavy duty bleeder screw
Flared coolant pressure release line
Hardware for installation

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Silicone Expansion Tank Relocation Heater Hose

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T#:21735881

Part#: 053082LA01

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Upgraded or replacement silicone heater hose for our N54 expansion tank relocation kits.

60" silicone performance coolant hose featuring a molded 90-degree bend for installs with space constraints.

Features and benefits:

Constructed of 4-Ply reinforced silicone for improved durability over the failure-prone rubber hoses.
Reduced thermal conductivity
Improved resistance to ozone and UV degradation for improved performance and durability.
Turner branded

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Turner Expansion Tank Wire Harness - E9X/ E8X N54

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T#:568366

Part#: 021942TMS05

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$ 20.24 USD

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The E9X/ E8X N54 Expansion Tank Wire harness is perfect for those running a relocated coolant reservoir tank. This harness plugs right into the factory connector allowing you to extend the position of the sensor without the need to splice any wires.

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OEM Style Hose Clamps

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T#:338927

Part#: HOSE-CLAMPS

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Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.

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Upper Radiator Hose - E9x E82 E89 With N52 Engine

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T#:7460

Part#: 17127531579

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$ 42.74 USD

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This is the upper radiator hose that goes from the engine to the top of the radiator with either N51 or N52 enigne.

This item fits the following BMWs:
2008+ E82 BMW 128i
2006-2011 E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi - Sedan
2006-2012 E91 BMW 325xi 328i 328xi 328i xDrive - Wagon
2007-2013 E92 BMW 328i 328xi 328i xDrive - Coupe
2007-2013 E93 BMW 328i Convertible
2009+ Z4 BMW Z4 sDrive30i

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Rein Upper Radiator Hose - E82, E88, E90, E92, E93, Z4

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T#:340690

Part#: 17127540127

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$ 38.94 USD

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The hose that comes off of the top outlet on the radiator

Radiator Hose for N52 / N54 - Lower

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T#:388683

Part#: 17127564478

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$ 32.29 USD

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Replace split, hard, or bulging hoses

Race German Coolant Temperature Sender Adapter - M12x1.5

T#:6827887

Part#: RGCTSAM12

Ships in 1-3 days

$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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Rein Radiator Hose with Temerature Sensor Fitting - E82 E88 E90 E91 E...

Lower

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T#:583051

Part#: 17127531581

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$ 26.59 USD

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Radiator to Thermostat Housing

OEM Rein Expansion Tank Vent Hose - E82/8 E9X N52

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T#:402113

Part#: 17127618510

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Acts as a vent hose between the upper radiator hose and the expansion tank. Runs the length of the top of the radiator.

Race German Coolant Temperature Sender Adapter - 1/8NPT

T#:6827888

Part#: RGCTSA1/8NPT

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$ 35.99 USD

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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor

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CRP Radiator Vent Hose - E82, E84, E88, E90, E92, E93

For vehicles with automatic or Double Clutch Transmission

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T#:1195859

Part#: 17127565094

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$ 33.24 USD

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Located on the top of the radiator

Rein Radiator Return Hose - E82, E88, E90, E91, E92, E93

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T#:20530

Part#: 64216951946

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$ 20.89 USD

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HOSE F RADIATOR AND ENGINE R 64216951946 Manufactured by CRP

Rein Lower Radiator Hose - E82, E88, E90, E92, E93

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T#:340665

Part#: 17127564480

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$ 48.44 USD

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The hose that attaches to the bottom of the radiator

Moroso Aluminum Coolant Expansion Tank - E9X Non-M

T#:29666105

Part#: 63851

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$ 488.99 USD

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The coolant expansion tank provides hot coolant with a place to travel, preventing pressure buildup within your cooling system. On many BMWs, this component is constructed from plastic. While cheap to replace and manufacture, a failed cooling tank can cause costly engine damage.

With this issue in mind, Moroso designed a high-quality replacement. Featuring TIG welded, 100% aluminum construction, this tank is sure to outperform it's factory counterpart.

Features:

Key Benefits:

Direct bolt-in replacement for stock, 2 piece plastic tank Fabricated Aluminum for strength, factory tanks fail after repeated high heat situations & age Features billet aluminum mounting tab/bleeder assembly for strength and precision No cutting of factory hoses is required and accepts the factory clip-on hose Moroso part (63324) racing radiator cap included; operates in the same pressure range as the factory cap Moroso radiator cap mounts to a billet aluminum neck that will not strip out like plastic threaded necks This aluminum tank can be polished, chromed, powder coated or left as-is

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OEM Rein Low Temperature Cooling Module Coolant Hose - BMW E82/88 E9X...

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T#:17738369

Part#: 17127540020

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$ 38.79 USD

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Coolant hoses can become brittle over time, leading to cracks and leaks. Replace your coolant hose with this OEM Rein hose to prevent leaks and overheating.

Rein Lower Cooling Hose - E82, E88, E90, E91, E92, E93, Z4

For vehicles with automatic transmission only

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T#:402117

Part#: 17117524710

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$ 31.34 USD

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Connects to lower coolant pipe

OEM Rein Coolant Hose - BMW E82/88 E9X N54 N55 3.0L

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T#:592007

Part#: 17127548203

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$ 25.64 USD

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Low temperature cooling module hose.

Rein Water Hose With Gasket - Water Pump To Engine Inlet

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T#:17804808

Part#: 11537584630R

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Rein OE quality water hoses are designed to be direct replacements for OE hoses and assemblies. This includes the hose and clamps.

Coolant Hose

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T#:594291

Part#: 11537584549

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$ 30.39 USD

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Connects to the thermostat. Replacement from Rein.

Rein Coolant Hose With Metal Flange - E82, E88, E9x - N55

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T#:53750144

Part#: CHU0629

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$ 53.93 USD

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Upgraded Coolant Hose from Rein Featuring Metal Flanges to Reduce Leaks

Rein Coolant Outlet Hose - E82, E88, E90, E92, E93, Z4

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T#:388670

Part#: 11537541992

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$ 26.99 USD

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Attached to the outlet on the thermostat housing

Aluminum Screws for N52 N54 Water Pump

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T#:2253

Part#: 11510392553

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$ 6.77 USD

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These aluminum water pump screws are single use and must be replaced each time they are removed. These are used on all 325i, 328i, and 330i with the BMW N51 N52 and N53 engines. They were also used on some early N54 engines that have rubber mounts on the water pump housing. Do not use these bolts if your N54 water pump has been replaced with a housing that does not have the rubber mounts.

In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the world’s finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.

This item fits the following BMWs:
2008+ E82 BMW 128i 135i
2007+ E9X BMW 325i 325xi 328i 328xi 330i 335i 335xi
2006+ E60 BMW 525i 525xi 528i 528xi 530i 530xi 535i 535xi
2006+ X3 BMW X3 3.0i X3 3.0si
2006+ Z4 BMW Z4 3.0i Z4 3.0si

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Coolant Inlet Hose Section

For vehicles with automatic transmission only

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T#:388669

Part#: 11537558523

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$ 17.09 USD

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Rein Water Pipe - E82, E88, E90, E91, E92, E93

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T#:403979

Part#: 11537545890

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$ 19.94 USD

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Connects from the top of the thermostat housing to the engine block

OEM Rein Coolant Pipe Inlet Hose Section - N52

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T#:388662

Part#: 11537516414

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$ 18.99 USD

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Cooling hoses tend to crack over time after going through countless heating and cooling cycles. This can lead to leaks or air bubbles in the cooling system that lead too coolant loos, hurts cooling potential, or could possibly cause damage from excess heat.

Fits the following BMWs:
Submodels with N52 3.0L engine.

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Rein Coolant Outlet Hose W/ Upgraded Aluminum Flange - BMW E82/88 E9X...

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T#:44835448

Part#: CHU0484

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$ 43.70 USD

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Attaches the outlet of the thermostat housing to the cylinder head This hose is notorious for failure at the flange. The plastic flange becomes brittle over time due to numerous heat cycles and often cracks, leading to a major coolant leak. This upgraded option from Rein features an aluminum flange that will not crack or split, ensuring years of operation without the worries of failure.

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Rein Coolant Hose - E60, E61, E70, E82, E83, E88, E90, E91, E92, E93,...

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T#:348982

Part#: 11537521049

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$ 17.09 USD

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Connects from the water pump to the thermostat

BMW Radiator Hose Kit - 17127531581

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T#:46719188

Part#: CHK0462

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$ 41.73 USD

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Keep your cooling system sealed, strong, and ready for anything with this Rein radiator hose kit—your all-in-one fix for cracked, leaking, or worn factory hoses. Years of heat, pressure, and age can cause rubber to weaken, split, or swell, setting the stage for coolant leaks and potential overheating. Rein hoses are engineered to meet or exceed OEM standards, built from premium, heat-resistant materials that can take on extreme temperatures and system pressures without faltering. Each hose features factory-correct bends, fittings, and diameters for an exact, hassle-free installation—no cutting or forcing required. Whether you’re tackling a full cooling system refresh or chasing down a small coolant leak, this Rein kit provides everything needed to restore confidence and performance under the hood. Why choose this Rein radiator hose kit: Factory-level precision – Direct-fit replacements that deliver OEM-quality reliability. Built to last – Resists cracking, swelling, and chemical damage from daily heat cycling. Confidence restored – Prevents coolant loss, overheating, and on-road breakdowns. All-in-one upgrade – Includes upper and lower hoses for a complete system refresh. If keeping your BMW’s cooling system running tight and trouble-free is the goal, Rein brings the dependable quality and fitment you can count on—engineered to perform just like factory, mile after mile.

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Rein Turbo Charger Cooling Hose - Return

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T#:34080768

Part#: 11537558903

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$ 56.99 USD

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Turbo Charger Cooling Hose - Return is essential for maintaining the efficiency and performance of your turbocharged vehicle. This high-quality return hose is specifically designed to handle the intense heat and pressure generated by the turbocharger system. Manufactured using durable materials, this cooling hose ensures optimal coolant flow to keep your engine running at peak performance. Available at Turner Motorsport, it’s the perfect upgrade or replacement part for your vehicle’s turbo system.

High-performance cooling solution for turbocharged engines
Ensures efficient coolant circulation to prevent overheating
Manufactured from heat-resistant and durable materials
Direct fit for a hassle-free installation
Designed for long-lasting durability and reliability
Compatible with a variety of makes and models

This Turbo Charger Cooling Hose - Return from Turner Motorsport is the ideal choice for any turbocharged engine, ensuring your vehicle operates smoothly and efficiently.

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Water Pump

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T#:38161720

Part#: 11517632426

Ships in 4 Business Days

Sale - Save 5% $ 782.99

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$ 743.84 USD

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Water Pump

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T#:46478542

Part#: WPR0046

Ships in 4 Business Days

Sale - Save 5% $ 795.99

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$ 755.36 USD

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Don't take your car's cooling system for granted. A waterpump failure can cost you an engine, which is why preventatively replacing your BMWs waterpump and refreshing the cooling system every 60,000 miles. The water pump is a weak point is the cooling system. Replacing your waterpump will go a long way for keeping your car on the road and operating properly. This water pump fits many 2006 and newer BMW 6 cylinder engines, specifically all the BMWs with the N51, N52, N53 engines. You will also need to purchase replacement aluminum screws Part #11510392553

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OEM Rein Water Pump W/ Installation Kit - BMW E82/88 E9X N52 3.0L ...

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T#:45997535

Part#: WPS0502

In Stock at Vendor

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08-31-2026

$ 770.77 USD

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Rein Electric Water Pump Replacement Kits offer a valuable solution to failure-prone cooling-related components on the N52 BMW engine platforms. At the heart of these kits are OEM electric water pumps, which are complemented by Rein's problem solver hoses.

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Rein Coolant Inlet Hose Section - E82, E83, E88, E90, E91, E92, E93 ...

For vehicles with manual transmission

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T#:388668

Part#: 11537535829

In Stock at Vendor

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$ 19.94 USD

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Replaces the rubber section of the water pump inlet pipe - includes two clamps

BMW Water Pump Kit - E9X/E8X N54/55

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T#:46616001

Part#: WPS0505

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Sale - Save 5% $ 944.99

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08-31-2026

$ 897.68 USD

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Late-model external water pumps are typically more dependable and easier to service, with no gasket or O-ring to worry about. Replacing higher-mileage units during routine cooling system maintenance is a smart way to add extra peace of mind. Includes: Water pump Thermostat assembly Water pump elbow Coolant hoses Necessary hardware

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Water Pump Service Kit

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T#:57616362

Part#: 1151758692550

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Sale - Save 5% $ 1,264.99

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08-31-2026

$ 1,201.28 USD

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$ 1,264.99

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$ 1,201.28 USD

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This CRP/Rein service kit offers an all-in-one overhaul solution designed to restore maximum cooling system integrity.

Water Hose

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T#:57616352

Part#: 17127599452

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08-31-2026

$ 60.06 USD

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$ 60.06 USD

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Rein Automotive cooling hoses are designed as precision OEM-quality replacements that withstand the rigorous demands of hard driving.

Water Pump Service Kit

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T#:57616363

Part#: 115175869259

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Sale - Save 5% $ 1,687.99

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08-31-2026

$ 1,603.14 USD

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Protect your high-performance driving machine from the devastating consequences of thermal overload with the Rein Water Pump Service Kit.

Water Pump Service Kit

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T#:57616366

Part#: 115175869251

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Sale - Save 5% $ 1,326.99

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08-31-2026

$ 1,260.18 USD

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Refresh your cooling setup with full confidence and protect your investment against heat-induced power loss.

Water Pump Service Kit

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T#:57616365

Part#: 115175869253

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Sale - Save 5% $ 1,265.99

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$ 1,202.05 USD

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Engineered to deliver factory-level reliability, the Rein Electric Water Pump Service Kit is an essential maintenance upgrade for your BMW.

Coolant Expansion Tank

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T#:54959296

Part#: 314 223 0004

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$ 75.99 USD

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$ 75.99 USD

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This Meyle original-quality expansion tank provides a durable, reliable solution to get your cooling system back to performing exactly as it should.

Water Pump Service Kit

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T#:38161728

Part#: 11515A05704

Ships on Sep 23, 2026

Sale - Save 5% $ 749.99

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08-31-2026

$ 712.21 USD

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Bav Auto Temperature Sensor - BMW E39 E46 E9X E60 F01/02

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T#:639833

Part#: 13621433076

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This product was last offered at the strikethrough price on
05-03-2026

$ 11.99 USD

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This is the coolant temperature sensor used in many BMW models from the late-1990s to the mid-2010s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer. This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement. From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Meyle - Coolant Inlet Hose Section for various BMW models

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T#:40478168

Part#: 11537516414

Ships on Sep 22, 2026

$ 7.99 USD

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This Meyle component offers OEM-level fit and function for hassle-free installation and dependable cooling system performance.

Fluid Level Sensor

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T#:5973204

Part#: 17117546548

Ships on Sep 22, 2026

$ 13.99 USD

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$ 13.99 USD

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MEYLE-ORIGINAL: True to OE fluid level sensor. Used in multiple locations. Wulf Gaertner Autoparts AG manufactures and markets automotive spare parts under its MEYLE brand. Since its foundation in 1958, Wulf Gaertner Autoparts has been an owner-operated, unlisted family business on the aftermarket scene. Since 1995, Wulf Gaertner Autoparts AG has been manufacturing and trading under its MEYLE brand. They pride themselves on top-grade quality-tested spare parts for passenger cars, vans and commercial vehicles. Comparable OE Cross Reference - 17117546548

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Meyle Coolant Hose - BMW N52 3.0L

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T#:35829327

Part#: 11537521049

Ships on Sep 22, 2026

$ 19.99 USD

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$ 19.99 USD

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Over time, coolant hoses in your vehicle can deteriorate due to prolonged exposure to high temperatures from the coolant. Made of reinforced rubber, these hoses are prone to issues such as splitting at hose clamps, swelling, cracking, or even breaking, which can leave you stranded. It's important to replace them at the first sign of wear to prevent coolant loss and ensure your engine stays properly cooled.

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Coolant Thermostat

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T#:55461389

Part#: 11537549476

Ships on Sep 22, 2026

$ 81.99 USD

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$ 81.99 USD

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This Meyle coolant thermostat provides a refresh for your thermal management system, keeping your engine operating exactly where the engineers intended.

BMW Coolant Expansion Tank With Cap

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T#:46616007

Part#: EPK0131

Ships in 4 Business Days

Sale - Save 5% $ 104.99

This product was last offered at the strikethrough price on
08-31-2026

$ 99.29 USD

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$ 99.29 USD

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The coolant expansion tank provides a place for excess coolant to flow as temperatures rise and fall. Because it constantly endures extreme temperature changes, it’s prone to cracking or breaking over time. Keeping coolant contained within the system is essential, so if your tank shows signs of damage—such as cracks, broken nipples, or compromised mounting points—it’s time for a replacement.

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Electric Water Pump

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T#:54959290

Part#: 313 220 0017

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$ 326.99 USD

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$ 326.99 USD

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Whether you are daily driving or doing a preventative cooling overhaul, this high-quality replacement pump includes fresh mounting hardware to ensure your BMW's cooling system remains reliable.

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