Rein BMW Cooling System Parts & Accessories for BMW 5 Series E60 (2004-2010)

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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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Rein Water Hose With Gasket - Water Pump To Engine Inlet
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T#:17804808
Part#: 11537584630R
Ships in 1 Business Day
$ 40.99 USD
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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.
Rein Coolant Hose - Supply Line - E60, E61
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T#:557219
Part#: 17127546064
In Stock
$ 54.85

This product was last offered at the strikethrough price on
05-13-2026

$ 47.99 USD
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$ 47.99 USD
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Connects from water pump to top left of radiator
Coolant Hose - Return Line
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T#:377696
Part#: 17127521778
In Stock
$ 32.99 USD
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Connects from water pump to top right of radiator

Rein Coolant Hose - E60, E61
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T#:557207
Part#: 17127565075
In Stock
$ 40.58

This product was last offered at the strikethrough price on
05-11-2026

$ 36.99 USD
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$ 40.58

This product was last offered at the strikethrough price on
05-11-2026

$ 36.99 USD
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From radiator to thermostat

Rein Cooling Hose - Cylinder Head To Thermostat - E60, E61
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T#:557206
Part#: 11537566329
In Stock
$ 27.99 USD
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Replace your leaking hose
Rein Upper Radiator Hose - E60, E63, E64
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T#:592004
Part#: 17127540665
Ships in 3 Business Days
$ 79.99 USD
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$ 79.99 USD
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Connects water pump to radiator

Expansion Tank Vent Pipe
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T#:402415
Part#: 17127521775
In Stock at Vendor
$ 28.99 USD
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Replace your cracked and leaking hose with this replacement from Rein
Expansion Tank Vent Hose
For vehicles with production date up to 07/2004
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T#:591986
Part#: 17127519247
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$ 29.99 USD
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$ 29.99 USD
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With quick connect coupling

Rein Water Supply Hose - E60, E61
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T#:591801
Part#: 11537522999
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$ 39.99 USD
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Serves as a Y-connection for the Thermostat and Water Pump

Water Hose with Gasket
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T#:599688
Part#: 11537560530
In Stock at Vendor
$ 21.99 USD
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This short curved coolant hose connects from the aux water pump near the transmission.
Thermostat With Housing
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T#:582356
Part#: 11537509227
Ships in 3 Business Days
$ 89.99 USD
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$ 89.99 USD
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Stop leaks before they start with this new Thermostat With Housing from Rein.
OEM Rein Coolant Expansion Tank Return Hose - E60 E63
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T#:19545
Part#: 17127545653
In Stock at Vendor
$ 53.99

This product was last offered at the strikethrough price on
05-07-2026

$ 52.99 USD
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$ 52.99 USD
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This is the coolant reservoir expansion tank return hose that connects to the bottom of the expansion tank. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure. ​

This item fits the following BMWs:
2004-2010 E60 BMW 545i 550i
2004-2010 E63 BMW 645ci 650i
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Rein Water Pump Return Hose - E60, E63, E64
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T#:592005
Part#: 17127540667
Ships in 3 Business Days
$ 26.99 USD
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Hose that pulls water from the water pump and disperses it to your engine
Coolant Hose
For vehicles with automatic transmission only
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T#:379793
Part#: 17127534918
In Stock at Vendor
$ 90.99 USD
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$ 90.99 USD
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From water pump to radiator
Upper Radiator Hose
For vehicles with automatic transmission
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T#:377397
Part#: 17127519248
Ships in 1 Business Day
$ 93.99 USD
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$ 93.99 USD
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Attaches to the water pump

Radiator Vent Hose
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T#:592001
Part#: 17127534917
Ships in 1-2 days
$ 38.23 USD
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Replace your cracked & leaking hose

OEM Rein Coolant Hose - E60 528
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T#:557218
Part#: 17127565780
Back Ordered
$ 35.99 USD
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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
Rein Expansion Tank Cap
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T#:384807
Part#: 17117639021
In Stock
$ 16.99 USD
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Cap for plastic expansion tank

Aluminum Screws for N52 N54 Water Pump
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T#:2253
Part#: 11510392553
In Stock
$ 7.13 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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Rein Coolant Hose - E60, E61, E70, E82, E83, E88, E90, E91, E92, E93,...
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T#:348982
Part#: 11537521049
In Stock
$ 17.99 USD
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Connects from the water pump to the thermostat

OEM Rein Coolant Pipe Inlet Hose Section - N52
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T#:388662
Part#: 11537516414
In Stock
$ 19.99 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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OEM Rein Coolant Hose - E60 525/530 M54
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T#:340689
Part#: 17127519256
In Stock
$ 47.93

This product was last offered at the strikethrough price on
05-02-2026

$ 42.99 USD
Limited Qty Sale
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$ 47.93

This product was last offered at the strikethrough price on
05-02-2026

$ 42.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
Rein Cooling O-Ring - E53, E60, E63, E64, E65, E66, E70
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T#:362446
Part#: 11531710048
In Stock
$ 4.07 USD
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Seals the rear of the water transfer pipe to the block
Coolant Hose
For vehicles with production date from 07/2004
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T#:393277
Part#: 17127542540
In Stock
$ 51.99 USD
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$ 51.99 USD
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Attaches to the vent port on the expansion tank


OEM Rein Coolant Hose - E60 E61 E83 Z4
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T#:583591
Part#: 11537519494
In Stock
$ 18.99 USD
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Attaches from inlet pipe to heat exchanger. Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.
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Rein Coolant Hose - E60, E61
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T#:402414
Part#: 11537544638
In Stock at Vendor
$ 28.00 USD
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Comes off of the thermostat
Rein Coolant Return Hose - E60
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T#:591987
Part#: 17127519249
Ships in 3 Business Days
$ 55.99 USD
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$ 55.99 USD
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Attaches from radiator to water pump inlet

OEM Rein Radiator Return Hose - BMW E60 525i 530i M54
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T#:15115
Part#: 17127519257
Ships in 3 Business Days
$ 58.90 USD
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$ 58.90 USD
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Radiator hoses can become brittle over time, leading to cracks and leaks. Replace yours with this OEM Rein coolant hose to ensure your cooling system remains leak free for years to come.

Rein Turbo Charger Cooling Hose - Return
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T#:34080768
Part#: 11537558903
Ships in 1 Business Day
$ 59.99 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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Rein Coolant Expansion Tank - E60, E61, E63, E64
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T#:402160
Part#: 17137542986
Ships in 1 Business Day
$ 82.99 USD
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$ 82.99 USD
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Includes fluid level sensor

BMW Radiator Hose Kit - 17127521778
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T#:46719168
Part#: CHK0401R
Ships in 3 Business Days
$ 52.99 USD
Free Shipping on orders $49 and up
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 Water Pipe With O-Rings
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T#:17704768
Part#: 11537519710
Ships in 3 Business Days
$ 46.99 USD
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Water pipes are essential for proper cooling. If they are cracked, they are going to need to be replaced as soon as possible to avoid overheating your engine.

Water Pump
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T#:46478542
Part#: WPR0046
Ships in 3 Business Days
$ 795.99 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 Coolant Hose - BMW E60 E63/E64 E65/E66
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T#:45791754
Part#: 17127508011R
Ships in 3 Business Days
$ 35.99 USD
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This hose runs from the lower radiator port on the passenger side of the radiator to the water pump on the engine. Rubber hoses can crack over time, leading to coolant loss. Replace your hose with this OEM Rein hose to eliminate leaks and prevent overheating.
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OEM Rein Coolant Supply Hose - BMW E60 525i 530i M54
For vehicles with automatic transmission
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T#:340691
Part#: 17127519255
Ships in 3 Business Days
$ 66.28 USD
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$ 66.28 USD
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Attaches between upper radiator connection radiator and the thermostat housing
OEM Rein Coolant Hose - E60 525/530 M54
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T#:379784
Part#: 17127519259
Ships in 3 Business Days
$ 65.99 USD
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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.


BMW Water Pump Kit - 11517632426
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T#:46615999
Part#: WPS0507
Ships in 3 Business Days
$ 961.99 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.

Late-model external water pumps have the advantage of being generally more reliable, while also being easier to service, not requiring a gasket or o-ring. Replacing high mileage units during cooling system services provides peace of mind.

Includes:

Water pump
Thermostat assembly
Water pump elbow
Coolant hoses
Necessary hardware

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Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X
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T#:52516266
Part#: ELC0090
Ships in 3 Business Days
New Item
$ 69.99 USD
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The Rein ELC0090 is a critical component for BMW N52-series engines, replacing the often-ignored "angle connector" located beneath the intake manifold.
Rein Water Hose with Metal Flange - E60, E61 - N54
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T#:53750141
Part#: CHU0460
Ships in 3 Business Days
New Item
$ 52.99 USD
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Heat cycles cause Cracking and Leaks on Rubber and Plastic Components. Replace Leaking Hose with this Part From Rein Featuring Upgraded Metal Flanges

Coolant Hose - Supply Line
For vehicles with manual transmission only
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T#:379708
Part#: 17127521777
Ships in 3 Business Days
$ 41.99 USD
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$ 41.99 USD
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Connects from water pump to top left of radiator

BMW Radiator Hose Kit - 17127519257
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T#:46719182
Part#: CHK0033
Ships in 3 Business Days
$ 66.99 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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Cool Retrun Hose
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T#:379713
Part#: 17127540666
Ships in 3 Business Days
$ 80.99 USD
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$ 80.99 USD
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Connects to the radiator

OEM Rein Coolant Hose w/ Temperature Sensor - BMW E60 E63/E64 E65/E66...
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T#:375746
Part#: 17127508011
Ships in 3 Business Days
$ 75.99 USD
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$ 75.99 USD
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This hose runs from the lower radiator port on the passenger side of the radiator to the water pump on the engine. Rubber hoses can crack over time, leading to coolant loss. Replace your hose with this OEM Rein hose to eliminate leaks and prevent overheating.
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Water Hose
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T#:594317
Part#: 17127560974
Ships in 3 Business Days
$ 37.99 USD
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Radiator to Auto Trans Oil Cooler

OEM Rein PRO Series Water Pump & Serpentine Belt Kit - BMW E60 535 N5...
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T#:38161726
Part#: RSW0021
Ships in 3 Business Days
$ 711.23 USD
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Includes a new electric water pump, serpentine belt, belt tensioners, and idler pulleys

Rein Expansion Tank Return Hose - E60, E61
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T#:591993
Part#: 17127519258
Ships in 3 Business Days
$ 56.99 USD
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$ 56.99 USD
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Connects between the top of the radiator and the bottom of the expansion tank
Coolant Hose
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T#:591989
Part#: 17127519254
In Stock at Vendor
$ 48.18 USD
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Attaches to the vent port on the expansion tank
Water Pump Service Kit
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T#:38161728
Part#: 11515A05704
Ships on Jun 30, 2026
$ 749.99 USD
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Rein Coolant Return Pipe - N62 N73
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Rein - Corporate Logo
T#:386411
Part#: 11511439976
Special Order: No Guaranteed ETA
$ 14.99 USD
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This is the coolant return pipe on the back of the water pump on the N62 and N73 engines used in the E53 X5, E60 545/550, E63 645/650, E65 745/750, E70 X5, and F02 750. This pipe connects the water pump to the valley pan and it's a compression fitting (no o-rings). Whenever the water pump or valley pan are replaced this tube should also be replaced. This is one area where you don't want to go back and re-do your work because of a leaking fitting! In German, Rein means Pure. In the automotive industry the Rein name has quickly come to represent quality. With fitments for some of the worldaEURtms finest automobiles including BMW and Mini and guaranteed OE quality, Rein is a name you can trust.
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Radiator Support Bracket
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Rein - Corporate Logo
T#:14122755
Part#: 17117514402
Special Order: No Guaranteed ETA
$ 8.99 USD
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Mounts to top of radiator bracket, 2 per vehicle.