BMW Cooling Overhaul Kits for BMW 5 Series E39 (1996-2003)

Basic Cooling System Service Kit - E39 540i (09/1998+)

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T#:557233

Part#: E39540BCKT2

Ships on Oct 1, 2026

Sale - Save 13% $ 389.99

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

$ 338.10 USD

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Sale - Save 13%

$ 389.99

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

$ 338.10 USD

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Just like the rest of your vehicle's major systems, the cooling system must also beÂ addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself canÂ degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Performance Water Pump & Thermostat Kit - BMW M50 M52

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T#:30397440

Part#: 11517527799KT2

In Stock

$ 357.99

This product was last offered at the strikethrough price on
06-15-2026

$ 342.99 USD

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$ 342.99 USD

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BMW vehicles are known for their robust performance, but the water pump is a notorious weak spot, often needing replacement every 60,000 miles.

During this service, it's wise to also swap out the thermostat to maintain the efficiency of your vehicle's cooling system. Turner Motorsport simplifies this process with our expertly curated Water Pump & Thermostat Replacement Kit.

This premium kit centers around the renowned EMP Stewart high-performance water pump--a favorite among BMW enthusiasts for its exceptional design. Featuring a stainless steel impeller, this pump enhances coolant flow by 20%. Complementing this is a low-temperature 68Â°C (154.4Â°F) Mishimoto thermostat, an upgraded aluminum thermostat housing, and Redline Water Wetter coolant additive. Together, these components make for the ultimate cooling system upgrade for your E36, E39, or Z3!

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Basic Cooling System Service Kit - E39 525i 528i 530i M52 2.8L M54 2....

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T#:557232

Part#: E39M5XBCKT

In Stock

Sale - Save 9% $ 352.99

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

$ 321.27 USD

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Sale - Save 9%

$ 352.99

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

$ 321.27 USD

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Just like the rest of your vehicle's major systems, the cooling system must also beÂ addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself canÂ degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Basic Cooling System Service Kit - E39 528i M52 2.8L (up to 09/1998) ...

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

T#:557221

Part#: E39528BCKT

Ships in 1 Business Day

Sale - Save 13% $ 259.99

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

$ 225.76 USD

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Qty

Sale - Save 13%

$ 259.99

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

$ 225.76 USD

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Just like the rest of your vehicle's major systems, the cooling system must also beÂ addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself canÂ degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

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Complete Cooling System Overhaul Package - 1999-2003 E39 540i, 1999-2...

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

T#:338704

Part#: TMS14417

Ships on Oct 1, 2026

Sale - Save 4% $ 773.99

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

Starting at $ 743.31 USD

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Sale - Save 4%

$ 773.99

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

Starting at $ 743.31 USD

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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 540i with the M62TU VAN0S 4.4-liter engine. This package applies to cars equipped with either the manual or automatic transmission (select the appropriate parts in the menu below).

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Our bundled package includes the following:

OEM Behr radiator (select for manual or automatic transmission)

OEM water pump (choose either the metal or composite impeller)

OE BMW coolant temp sensor (located in the water pump housing)

OEM Behr thermostat with housing and sensor

OEM Behr expansion tank with cap

OE BMW upper and lower radiator hoses with expansion tank hose
Optional items (which can be added below):
- OE BMW antifreeze
- Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
- Replace the heat exchanger coolant lines for the automatic transmission
- Add a new fan clutch

Buy as a package and save $$$!

This cooling system overhaul kit fits the following BMWs:
1999-2003 E39 BMW 540i
1999-2001 E38 BMW 740i 740il

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Complete Cooling System Overhaul Package - 2000-2003 E39 M5

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

T#:338714

Part#: TMS14418

Ships in 2 Business Days

$ 1,201.99

This product was last offered at the strikethrough price on
06-05-2026

Starting at $ 1,198.76 USD

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Starting at $ 1,198.76 USD

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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 E39 M5 with the S62 engine.

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts. Our bundled package includes the following:

OEM Behr radiator

OEM Laso or OE BMW water pump with gasket

OE BMW coolant temp sensor (located in the water pump housing)

OEM Behr thermostat with o-ring

OE BMW o-rings for the inner coolant tubes

OE BMW expansion tank cap

OE BMW upper and lower radiator hoses with OE-style clamps

OE BMW expansion tank hose with OE-style clamps
Optional items (which can be added below):
- OE BMW antifreeze
- Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
- Add a new plastic expansion tank (if it's never been changed it's a risk of a crack or leak)
- Add a new fan clutch

Buy as a package and save $$$!

This cooling system overhaul kit fits the following BMWs:
1999-2003 E39 BMW M5

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Cooling System Overhaul Kit - E39 M5

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

T#:554556

Part#: 17111436062KT2

Ships on Jul 16, 2026

$ 2,380.99

This product was last offered at the strikethrough price on
06-05-2026

$ 2,371.00 USD

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$ 2,371.00 USD

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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2003 E39 M5 with the S62 engine.Â

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts.Â

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Basic Cooling System Service Kit - E39 540i (up to 09/1998)

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

T#:557230

Part#: E39540BCKT

In Stock at Vendor

Sale - Save 11% $ 449.99

This product was last offered at the strikethrough price on
04-21-2026

$ 398.59 USD

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Sale - Save 11%

$ 449.99

This product was last offered at the strikethrough price on
04-21-2026

$ 398.59 USD

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Just like the rest of your vehicle's major systems, the cooling system must also beÂ addressed periodically to ensure proper cooling and component reliability. Plastic and rubber components become brittle and prone to splitting or cracking after long periods of heating and cooling cycles, especially in colder climates! The coolant itself canÂ degrade or become contaminated, leading to potential corrosion or freezing issues. Finally, thermostats and sensors can fail completely, preventing proper cooling and/or coolant temperature readings to become inaccurate.

To make sure you are not left stranded on the side of the road with an overheated engine, we have put together this Basic Cooling System Service kit. This kit contains all of the most-likely-to-fail components, giving you peace of mind knowing your engine will continue to run cool for another 60,000+ miles.

See kit contents below for all included components.

Show More Show Less

Cooling System overhaul Kit - E39 528i From 09/1998

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

T#:554546

Part#: 11517527910KT17

Ships in 1 Business Day

Sale - Save 2% $ 1,016.99

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

$ 1,001.51 USD

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Sale - Save 2%

$ 1,016.99

This product was last offered at the strikethrough price on
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$ 1,001.51 USD

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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the E39 528i with the M52Â engine.Â

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Keep on top of the cooling needs of your engine for your own piece of mind. Potential buyers also see the upside of a properly maintained car with receipts.Â

Â

This kitÂ fits the following BMWs:

09/1998 - 2000Â E39 528i

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Complete Cooling System Overhaul Package - 1997-1998 E39 528i ...

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

T#:338700

Part#: TMS14414

Ships in 1 Business Day

$ 597.99

This product was last offered at the strikethrough price on
06-15-2026

Starting at $ 582.38 USD

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Starting at $ 582.38 USD

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This is a compete cooling system overhaul kit, which includes all the common M52 cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 528i with the M52 engine with either the manual or automatic transmission.

Much of the E39 cooling system is shared with the 3-series cars of the same era. Which means the potential for serious cooling system and engine-related failures. Several of the primary cooling components are prone to failure within 60k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the radiator & waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your cooling system. Our kit includes one OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat, radiator cap, and new radiator hoses.

Basic Kit Contents:
17111702969, radiator (OEM Behr)
11517527799, water pump (OE BMW)
11537511580, 88ï¿½C thermostat (OEM Behr/Hella)
11531740832, upper radiator hose (OEM Rein/CRP)
11531740481, lower radiator hose (OEM Rein/CRP)
17111427156, expansion tank hose (OEM Rein/CRP)
17111742231, expansion tank cap (OEM Behr/Hella)

Cooling Kit Options:

E39 Water Pump Options

(click to expand)

OE BMW with composite impeller. The original BMW water pumps had plastic impellers which degraded and failed. The latest design uses composites that are much better and will not corrode. Compared to a metal impeller, the composite is lighter so it's more efficient and it will not wear out the bearings. We don't even offer the metal impeller pumps with this kit because the BMW composite one is so much better.
Stewart high performance. The ultimate in M50 water pumps! It features a stainless steel impeller, heavy-duty bearings, a better o-ring seal, and flows 20% more than the stock pump. If indestructible is what you're looking for, this is the pump to go with. It also comes with a lifetime warranty for piece of mind.

E39 Expansion Tank

(click to expand)

The original expansion tank is prone to cracks and leakage. Again - it's made from a weak plastic. The material has improved over the years but the only option remains an OEM plastic tank. It's a good idea to replace it if you're doing a whole overhaul. Don't re-use the original tank if you're going to the trouble of replacing everything else!

E39 Thermostat Housing

(click to expand)

The original BMW plastic thermostat housing is brittle and does not seal well. We only sell it under protest. Instead we've been selling this aluminum housing for the last 20+ years. The aluminum does not have the same shortcomings as the plastic one. We made this item an option in case you already have the aluminum housing.

Use the options below to build your cooling package.

This cooling system overhaul kit fits the following BMWs:
1997-1998 E39 BMW 528i

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Complete Cooling System Overhaul Package - 1999-2003 E39 525i 528i 53...

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

T#:338701

Part#: TMS14415

Back Ordered

Starting at $ 705.50 USD

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Starting at $ 705.50 USD

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This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1999-2000 528i with the M52TU engine and the 2001-2003 525i and 530i with the M54 engine. This package applies to cars equipped with either the manual or automatic transmission.

Much of the later E39 cooling system is strong and reliable and doesn't suffer the same types of problems associated with earlier E39 and E36 systems. But there is still the potential for serious cooling system and engine-related failures. Several of the primary cooling components are prone to failure within 80k miles (or less in many cases). A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system. Our kit includes an OEM Behr radiator, an Original BMW water pump (with updated composite impeller), thermostat with housing, radiator cap, and new radiator hoses.

Optional items (which can be added below):
- Original BMW antifreeze
- Upgrade the water pump to a Stewart EMP High Performance pump
- Add a new coolant expansion tank (known for cracking)
- Add a new coolant level sensor (known for failing / throwing "check coolant" messages)
- Add a new coolant temp sensor (located in lower radiator hose and the seal ring may cause leaks if re-used)

This cooling system overhaul kit fits the following BMWs:
1999-2003 E39 BMW 525i 528i 530i

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Complete Cooling System Overhaul Package - 1997-1998 E39 540i ...

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

T#:338706

Part#: TMS14416

Back Ordered

Sale - Save 3% $ 660.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 640.70 USD

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Sale - Save 3%

$ 660.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 640.70 USD

Add to Wish List

This is a compete cooling system overhaul kit, which includes all the common cooling system failure parts bundled into a complete package. This cooling system package is for the 1997-1998 540i with the M62 4.4-liter engine (non-VAN0S). This package applies to cars equipped with either the manual or automatic transmission (select the appropriate parts in the menu below).

A failure in the cooling system can lead to overheating and catastrophic engine failure. Don't gamble your engine! By replacing these core items preventatively, such as the thermostat housing, radiator, and waterpump, you are defusing what could be a ticking cooling system time bomb. And if you've had a failure of one of these parts, now is the time to refresh your entire cooling system.

Basic Kit Contents:
1711702969, radiator (OEM Behr)
11510393340, water pump (OEM)
13621703993, coolant temp sensor (located in the water pump housing)
11531437526, thermostat with housing and sensor (OEM Behr/Hella)
11531745595, upper radiator hose (OEM)
11531741409, lower radiator hose (OEM)
11531741404, expansion tank hose (OEM)
17111741167, expansion tank (OEM Behr)
17111742231, expansion tank cap (OEM Behr)

Cooling Kit Options:

540 Water Pump Options

(click to expand)

There are three versions of the water pump for the early 1997-1998 540i: OEM plastic impeller, updated metal impeller, and the more recently updated composite impeller. We recommend either the metal or composite impeller. These are what we use the most in our shop and what our technicians are comfortable with. On more recent models, BMW has used the composite impeller as original. There doesn't seem to be evidence of the plastic failing on this design (it did on the E36 3-series) but we feel most comfortable with the other options. Both the metal and composite manufacturers are OEM for BMW.

Use the options below to build your cooling package.

Buy as a package and save $$$!

This cooling system overhaul kit fits the following BMWs:
1997-1998 E39 BMW 540i

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