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BMW Radiators

We sell only OE supplier or approved aftermarket upgrade radiators for your BMW. It seems BMW took some shortcuts when it came to radiator design and used weak materials like plastic for critical connection points. If you are tracking older models like E30, E36, or E46, you probably are well aware of these issues. As these cars age, the plastic pieces become more brittle and failure prone. The solution is to replace with upgraded radiators that perform as upgrades for the original, failure prone radiator to avoid being left on the side of the road or, worse yet, the track.

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Stock Replacement Radiator - E30 M3

10X Entries Into Our F80 M3 Sweepstakes

T#:338019

Part#: 17112225592

Back Ordered

$ 347.99

This product was last offered at the strikethrough price on
08-13-2026

Starting at $ 258.99 USD

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Starting at $ 258.99 USD

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This is a new stock E30 M3 Radiator. We offer both Genuine BMW or Nissens brand radaitors. The Genuine BMW radiator is the highest quality radiator available. The Nissens is a high quality aftermarket radatior.

This item fits the following BMWs:
1988-1991 E30 BMW M3

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Cooling System Overhaul Kit - E46 323i/ci 325i/ci/xi 328i/ci 330i/ci/...

10X Entries Into Our F80 M3 Sweepstakes

T#:554552

Part#: 17119071519KT5

Back Ordered

Sale - Save 4% $ 979.99

This product was last offered at the strikethrough price on
08-17-2026

$ 944.54 USD

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Sale - Save 4%

$ 979.99

This product was last offered at the strikethrough price on
08-17-2026

$ 944.54 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 E46 with the M52/54 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.

This cooling system overhaul kit fits the following BMWs:
1999-2000 E46 3 Series Sedan/Wagon - 323i & 328i
1999-2000 E46 3 Series Coupe/Convertible - 323Ci & 328Ci
2001-2002 E46 3 Series Sedan/Wagon - 325i, 325xi, 330i, 330xi
2001-2002 E46 3 Series Coupe/Convertible - 325Ci, 330Ci

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ECS Cooling System Refresh Kit - Level 3 plus

10X Entries Into Our F80 M3 Sweepstakes

T#:15710794

Part#: 17119071519G-KT

Back Ordered

Sale - Save 1% $ 1,353.99

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

$ 1,338.26 USD

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Sale - Save 1%

$ 1,353.99

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

$ 1,338.26 USD

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Stop the problems before they arise. If your vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000-mile intervals. Water pump failure cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. Stewart High-Performance Water Pump ECS Aluminum Water pump pulley Fan Switch Thermostat with Housing Sealing Gaskets Expansion Tank with level sensor and clamp Pressure Cap 1 Gallon Coolant Upper & Lower Radiator Hoses Accessory Drive Belts Radiator Drain Plug Mishimoto Performance Aluminum Radiator Idler Pulley Hydraulic Tensioner and Pulley A/C Belt Tensioner Assembly

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ECS Cooling System Refresh Kit - Level 3

10X Entries Into Our F80 M3 Sweepstakes

T#:15710765

Part#: 07119904677-KT

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Sale - Save 4% $ 1,019.99

This product was last offered at the strikethrough price on
08-17-2026

$ 983.89 USD

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Sale - Save 4%

$ 1,019.99

This product was last offered at the strikethrough price on
08-17-2026

$ 983.89 USD

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Prevent cooling issues and take service of your cooling system one step further with an ECS Tuning Level 3 Cooling System Maintenance Kit. The experts at ECS have identified all of the common parts of the cooling system generally considered weak links on your BMW. Stop the problems before they arise. If you vehicle has 80,000 miles or more, replace all of these components to ensure that your vehicle stays healthy. To keep everything in top order, continue to replace these components at 80,000 mile intervals. Water pump failure, cracked plastic housings, and expansion tank leaks will not be a concern once all these problem parts are replaced. This kit was put together by ECS for a complete cooling system service. HEPU water Pump with metal impeller ECS Aluminum Water pump pulley Fan Switch Thermostat with Housing Sealing Gaskets Expansion Tank with level sensor and clamp Pressure Cap 1 Gallon Coolant Upper & Lower Radiator Hoses Accessory Drive Belts Radiator Drain Plug Nissens Radiator Idler Pulley Hydraulic Tensioner and Pulley A/C Belt Tensioner Assembly

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E30 Cooling System Refresh Kit - Level 3

10X Entries Into Our F80 M3 Sweepstakes

T#:11726278

Part#: 11531722218KT1

Back Ordered

Sale - Save 3% $ 693.99

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

$ 671.04 USD

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Sale - Save 3%

$ 693.99

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

$ 671.04 USD

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Ultimate cooling system overhaul kit - includes new radiator and all new hoses BMW engines do not respond well to overheating. Keep your E30 out of the "red zone" with a complete cooling system overhaul. While you're in there, it's an ideal time to replace the timing belt as well. Includes: Nissens radiator Water pump with gasket Thermostat with gasket Expansion tank Expansion tank cap Coolant level sensor 1 gallon of coolant Coolant hoses Hose clamps Timing belt Timing belt tensioner Radiator drain plug

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OEM Rein Radiator Cap - E21 E24 E10 E12 E23 E28

2X Entries Into Our F80 M3 Sweepstakes

T#:7395

Part#: 17111100848

In Stock at Vendor

Sale - Save 5% $ 11.99

This product was last offered at the strikethrough price on
08-31-2026

$ 11.39 USD

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Sale - Save 5%

$ 11.99

This product was last offered at the strikethrough price on
08-31-2026

$ 11.39 USD

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The radiator tank cap keeps necessary pressure on your coolant to increase efficiency. If you have an overheating issue in your vehicle, a simple, quick, and inexpensive part to replace is this cap. Often times, the coolant is not kept under enough pressure to keep it from boiling or expanding too much. This cap keeps all the heat and liquid inside the coolant system for maximum efficiency. Should be replaced each time major coolant system service is performed.

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OEM Rein Radiator Coolant Cap

2X Entries Into Our F80 M3 Sweepstakes

T#:38161716

Part#: 92810625703

In Stock at Vendor

Sale - Save 7% $ 11.99

This product was last offered at the strikethrough price on
08-31-2026

$ 11.12 USD

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Sale - Save 7%

$ 11.99

This product was last offered at the strikethrough price on
08-31-2026

$ 11.12 USD

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Rein Automotive OE Quality caps are designed to be direct replacements for OE caps. Rein caps are designed to match or exceed the OE materials used and are produced to the highest standards to ensure long service life. Rein Automotive OE quality caps keep the coolant system at the proper pressure, just like the OE cap.

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Rein Radiator Mount

2X Entries Into Our F80 M3 Sweepstakes

T#:17804812

Part#: 17117575248

Ships in 4 Business Days

Sale - Save 5% $ 13.99

This product was last offered at the strikethrough price on
08-31-2026

$ 13.29 USD

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Sale - Save 5%

$ 13.99

This product was last offered at the strikethrough price on
08-31-2026

$ 13.29 USD

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Rein OE equivalent mounts are produced with high-quality materials to ensure maximum life and a smooth ride.

Module Bracket

2X Entries Into Our F80 M3 Sweepstakes

T#:639804

Part#: 17117575247

Ships in 4 Business Days

Sale - Save 5% $ 20.99

This product was last offered at the strikethrough price on
08-31-2026

$ 19.94 USD

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Sale - Save 5%

$ 20.99

This product was last offered at the strikethrough price on
08-31-2026

$ 19.94 USD

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This is the left side radiator bracket.

Radiator Support Bracket

2X Entries Into Our F80 M3 Sweepstakes

T#:14122755

Part#: 17117514402

Back Ordered

Sale - Save 13% $ 8.99

This product was last offered at the strikethrough price on
08-13-2026

$ 7.83 USD

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Sale - Save 13%

$ 8.99

This product was last offered at the strikethrough price on
08-13-2026

$ 7.83 USD

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Mounts to top of radiator bracket, 2 per vehicle.

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