Rein BMW Coolant & Radiator Hoses for BMW 6 Series E64 (2004-2010)

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We offer replacement hoses from several OE brands that we trust, along with performance silicone upgrades for those who want increased wear resistance compared to factory rubber.
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Expansion Tank Vent Pipe
Expansion Tank Vent Pipe
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T#:402415
Part#: 17127521775
In Stock at Vendor
$ 28.99 USD
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$ 28.99 USD
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Replace your cracked and leaking hose with this replacement from Rein
OEM Rein Coolant Expansion Tank Return Hose - E60 E63
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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Upper Radiator Hose
Upper Radiator Hose
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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
Rein Water Pump Return Hose - E60, E63, E64
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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$ 26.99 USD
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Hose that pulls water from the water pump and disperses it to your engine
Coolant Hose
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
Expansion Tank Vent Hose
Expansion Tank Vent Hose
For vehicles with production date up to 07/2004
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T#:591986
Part#: 17127519247
Ships in 3 Business Days
$ 29.99 USD
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$ 29.99 USD
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With quick connect coupling
Rein Upper Radiator Hose - E60, E63, E64
Rein Upper Radiator Hose - E60, E63, E64
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T#:592004
Part#: 17127540665
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$ 79.99 USD
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$ 79.99 USD
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Connects water pump to radiator
Radiator Vent Hose
Radiator Vent Hose
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T#:592001
Part#: 17127534917
Ships in 1 day
$ 38.23 USD
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$ 38.23 USD
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Replace your cracked & leaking hose
Rein Cooling O-Ring - E53, E60, E63, E64, E65, E66, E70
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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$ 4.07 USD
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Seals the rear of the water transfer pipe to the block
Coolant Hose
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 - BMW E60 E63/E64 E65/E66
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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$ 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 Hose w/ Temperature Sensor - BMW E60 E63/E64 E65/E66
OEM Rein Coolant Hose w/ Temperature Sensor - BMW E60 E63/E64 E65/E66...
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T#:375746
Part#: 17127508011
In Stock at Vendor
$ 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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Cool Retrun Hose
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
Coolant Hose
Coolant Hose
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T#:591989
Part#: 17127519254
In Stock at Vendor
$ 48.18 USD
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$ 48.18 USD
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Attaches to the vent port on the expansion tank
Rein Coolant Return Pipe - N62 N73
Rein Coolant Return Pipe - N62 N73
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T#:386411
Part#: 11511439976
Special Order: No Guaranteed ETA
$ 14.99 USD
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$ 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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