Home
Cooling

Rein BMW Cooling System Parts & Accessories for BMW 5 Series E61 (2006-2010)

Clear BMW chassis

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.

Sub-Categories

Sort By:

Rein Coolant Hose - E60, E61

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:557207

Part#: 17127565075

In Stock

$ 40.58

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

$ 36.99 USD

Limited Qty Sale

Add to Wish List

Qty

$ 40.58

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

$ 36.99 USD

Limited Qty Sale

Add to Wish List

From radiator to thermostat

Rein Coolant Hose - Supply Line - E60, E61

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:557219

Part#: 17127546064

In Stock

$ 54.85

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

$ 47.99 USD

Add to Wish List

Qty

$ 47.99 USD

Add to Wish List

Connects from water pump to top left of radiator

Rein Water Supply Hose - E60, E61

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:591801

Part#: 11537522999

Ships in 4 Business Days

$ 39.99 USD

Add to Wish List

Qty

$ 39.99 USD

Add to Wish List

Serves as a Y-connection for the Thermostat and Water Pump

Expansion Tank Vent Pipe

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:402415

Part#: 17127521775

In Stock at Vendor

$ 28.99 USD

Add to Wish List

Qty

$ 28.99 USD

Add to Wish List

Replace your cracked and leaking hose with this replacement from Rein

Rein Cooling Hose - Cylinder Head To Thermostat - E60, E61

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:557206

Part#: 11537566329

Ships in 2 Business Days

$ 27.99 USD

Add to Wish List

Qty

$ 27.99 USD

Add to Wish List

Replace your leaking hose

Water Hose with Gasket

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:599688

Part#: 11537560530

In Stock at Vendor

$ 21.99 USD

Add to Wish List

Qty

$ 21.99 USD

Add to Wish List

This short curved coolant hose connects from the aux water pump near the transmission.

Aluminum Screws for N52 N54 Water Pump

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:2253

Part#: 11510392553

In Stock

$ 7.13 USD

Add to Wish List

Qty

$ 7.13 USD

Add to Wish List

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

Show More Show Less

OEM Rein Coolant Pipe Inlet Hose Section - N52

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:388662

Part#: 11537516414

In Stock

$ 19.99 USD

Add to Wish List

Qty

$ 19.99 USD

Add to Wish List

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.

Show More Show Less

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

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:348982

Part#: 11537521049

In Stock

$ 17.99 USD

Add to Wish List

Qty

$ 17.99 USD

Add to Wish List

Connects from the water pump to the thermostat

Rein Coolant Expansion Tank - E60, E61, E63, E64

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:402160

Part#: 17137542986

Ships in 2 Business Days

$ 82.99 USD

Add to Wish List

Qty

$ 82.99 USD

Add to Wish List

Includes fluid level sensor

Rein Expansion Tank Cap

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:384807

Part#: 17117639021

In Stock

$ 16.99 USD

Add to Wish List

Qty

$ 16.99 USD

Add to Wish List

Cap for plastic expansion tank

Rein Coolant Hose - E60, E61

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:402414

Part#: 11537544638

In Stock at Vendor

$ 28.00 USD

Add to Wish List

Qty

$ 28.00 USD

Add to Wish List

Comes off of the thermostat

Rein Coolant Temperature Sensor - BMW E6X, E7X, E9X

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:52516266

Part#: ELC0090

Ships in 4 Business Days

$ 69.99 USD

Add to Wish List

Qty

$ 69.99 USD

Add to Wish List

The Rein ELC0090 is a critical component for BMW N52-series engines, replacing the often-ignored "angle connector" located beneath the intake manifold.

Coolant Hose - Supply Line

For vehicles with manual transmission only

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:379708

Part#: 17127521777

Ships in 4 Business Days

$ 41.99 USD

Add to Wish List

Qty

$ 41.99 USD

Add to Wish List

Connects from water pump to top left of radiator

Rein Water Hose with Metal Flange - E60, E61 - N54

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:53750141

Part#: CHU0460

Ships in 4 Business Days

$ 52.99 USD

Add to Wish List

Qty

$ 52.99 USD

Add to Wish List

Heat cycles cause Cracking and Leaks on Rubber and Plastic Components. Replace Leaking Hose with this Part From Rein Featuring Upgraded Metal Flanges

OEM Rein Coolant Hose - E60 E61 E83 Z4

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:583591

Part#: 11537519494

In Stock at Vendor

$ 18.99 USD

Add to Wish List

Qty

$ 18.99 USD

Add to Wish List

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.

Show More Show Less

Water Pump

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:46478542

Part#: WPR0046

Ships in 4 Business Days

$ 795.99 USD

Add to Wish List

Qty

$ 795.99 USD

Add to Wish List

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

Show More Show Less

Water Hose

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:594317

Part#: 17127560974

Ships in 4 Business Days

$ 37.99 USD

Add to Wish List

Qty

$ 37.99 USD

Add to Wish List

Radiator to Auto Trans Oil Cooler

BMW Expansion Tank With Cap

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:46616010

Part#: EPK0128

Ships in 4 Business Days

$ 86.99

This product was last offered at the strikethrough price on
04-28-2026

$ 74.99 USD

Add to Wish List

Qty

$ 74.99 USD

Add to Wish List

The coolant expansion tank acts as a reservoir for excess coolant as it expands and contracts with temperature changes. Over time, the constant exposure to extreme heat cycles can cause the tank to crack, break, or suffer damage to its nipples or mounting points. To keep coolant properly contained within the system, a damaged tank should be replaced promptly.

Show More Show Less

Coolant Hose

For vehicles with automatic transmission

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:592009

Part#: 17127563852

Back Ordered

$ 39.99 USD

Add to Wish List

Qty

$ 39.99 USD

Add to Wish List

Connects the transmission heat exchange to the coolant return line

Select Vehicle

Category

Home

Cooling

Brand

View All Brands

Price

Special Offers

New (2)

Shipping