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BMW Cooling System Parts & Accessories

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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Graf - Corporate Logo
T#:640662
Part#: 11517838201
In Stock
$ 116.99

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

$ 106.99 USD
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$ 106.99 USD
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Water pumps are a common issue in cooling systems. If they fail, it can lead to dangerous overheating issues and potentially leave you on the side of the road with an engine that's now only good for being a large paperweight. This GRAF water pump is a new, high-quality replacement that will ensure years of trouble-free operation, keeping you on the road with peace of mind. This water pump has a metal impeller and includes the sealing o-ring. This item fits the following vehicles: E9X BMW M3 with S65 E60 BMW M5with S85 E63/4 BMW M6 with S85
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Graf - Corporate Logo
T#:12993
Part#: 11517586779
Ships in 1 Business Day
$ 153.69

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

$ 144.01 USD
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$ 144.01 USD
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This water pump includes the gasket (11517508535) and seal (11517507717) and is a direct replacement for your stock pump. This is a water pump only, the thermostat is also located in the water pump housing so you may also want to consider replacing that at the same time.

Graf manufactures a wide range of cooling system repair parts for many European vehicle makes including BMW and Mini. With a sharp focus on quality materials and precision manufacturing, this company brings you high-quality replacement parts that are meant for the long haul.


This item fits the following BMWs:
2006-2010 E60 BMW 550i
2006-2010 E63 BMW 650i
2005-2008 E65 BMW 750i 750li
2007-2013 E70 BMW X5 4.8i X5 xDrive48i

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Graf - Corporate Logo
T#:594768
Part#: 11510007043
In Stock
Sale - Save 17% $ 116.71

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

$ 97.38 USD
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Sale - Save 17%
$ 116.71

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

$ 97.38 USD
Free Shipping

Dinan High-Performance Heat Exchanger - F22/23 F3X B46/48 B58 ...
Call In Or Chat For Best Price! 10X Entries Into Our F80 M3 Sweepstakes
Dinan - Corporate Logo
T#:21045539
Part#: D780-0002
Ships in 2 Business Days
Sale - Save 10% $ 584.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 526.46 USD
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Sale - Save 10%
$ 584.99

This product was last offered at the strikethrough price on
09-29-2026

$ 526.46 USD
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The factory B4x/B58 heat exchanger is not built to cater to the rigorous demands often associated with a modified build. The thin core is easily overwhelmed with IAT's rising dramatically once pushed beyond a few successive WOT pulls or even a few minutes at the track. This elevation in temperature gives way to the factory ECU fail safes pulling timing and reducing overall power in order to keep the system from overheating to the point of permanent damage. On an application where enjoyment is directly attributed to pushing the platform to its limits this constraint to cooling presents a challenge for the automotive enthusiast. The Dinan B4x/B58 heat exchanger for the F2x/F3x chassis assists in mitigating these issues with a more robust core (48mm thick Dinan core vs. 27mm thick OEM core) that wields 78% more heat transfer surface area for improved cooling capacity. The significant increase in core thickness requires unique "L" shaped end tanks to be incorporated as well, which also contributes to the overall thermal mass (ability to absorb, store, and release heat) improvement beyond the OEM setup. With up to a 15° IAT delta recorded over stock the Dinan heat exchanger is ready, and able, to assist in extending your vehicles ability to deliver maximum performance time and time again for your driving enjoyment! Features: Average of 8° reduction in IAT's with a maximum reduction of 15° over 15 successive WOT pulls Reduces the tendency to heat soak / go in to limp mode 48mm thick Dinan cooler vs. 27mm thick stock cooler 78% more cooling surface area and volume than stock 100% TIG welded and pressure tested Installation hardware included (inclusive of xDrive specific transmission oil cooler brackets) NOTE: Due to the enlarged core and unique "L" shaped endtanks minor modification to the plastic core stack shroud may be required with some factory configurations ( particularly those with the optional OEM hot climate heat exchanger). Consult the installation PDF for full documentation on what exactly that entails. (https://documents.dinancars.com/d780-0002.pdf)
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Graf - Corporate Logo
T#:591808
Part#: 11517520123
Ships in 4 Business Days
$ 103.01 USD
Free Shipping
$ 103.01 USD
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Mini Water Pump Replacement

Ensure optimal engine performance with the Mini water pump replacement. Designed to address common cooling system issues, particularly in the water pump department, this replacement part is essential for maintaining proper engine cooling. If you're experiencing coolant leaks or strange noises from under the hood, it's likely your water pump is failing and needs immediate replacement.

  • Prevents coolant leaks
  • Eliminates whining noise from under the hood
  • Critical component for engine cooling system
  • Easy replacement for damaged water pumps
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Graf - Corporate Logo
T#:581199
Part#: PA1040
Ships in 1 Business Day
$ 149.61

This product was last offered at the strikethrough price on
05-04-2026

$ 139.02 USD
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$ 139.02 USD
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Includes required sealing gaskets and o-ring

Karbonius Composites - Corporate Logo
T#:47199278
Part#: G8XCS01-CF-2
Ships in 3 Business Days
$ 795.00 USD
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$ 795.00 USD
Free Shipping
Upgrade the appearance of your engine bay with this carbon cooling cover from Karbonius. Crafted from pre-preg carbon fiber, this cover is lighter and more visually appealing than the metal unit installed by BMW. This cover features a 2x2 twill weave and comes with a Gloss finish.
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