KLM Ice Box

🧊 KLM BMW G80 / G82 / G87 Ice Box Kit — Drag Racing Cooling System (5-Gallon)

The KLM Ice Box Setup is designed to deliver maximum cooling performance for the BMW G-Series platform, including the G80 M3, G82 M4, G87 M2, and G22 4-Series. Whether you’re pushing your BMW past 700+ horsepower on the street or chasing personal bests on the drag strip, this kit provides consistent intake temps and reliable performance run after run.

This system allows you to keep your factory A/C and heat exchanger for comfortable daily driving, while still giving you the flexibility to remove them for dedicated track use. It’s the ultimate dual-purpose cooling solution for both street and competition builds.

🔥 Key Features

• Designed for BMW G80 M3, G82 M4, G87 M2, and G22 4-Series

• 5-Gallon KLM Ice Box with billet pump bracket for strength and durability

• Retains OEM A/C and heat exchanger (optional delete for track use)

• Includes modified Pierburg CWA400 pump for high-flow efficiency

• Precision-machined KLM billet lid and billet passthrough flange

• Full AN fitting and hose package included for complete installation

• Helps eliminate heat soak and keeps intercooler fluid temps stable

• Ideal for single turbo, upgraded intercooler, or drag racing builds

• Engineered for both street comfort and race performance

📦 Complete Kit Includes

KLM Ice Box w/ Billet Pump Bracket (5 Gal)
KLM Billet Lid
KLM Billet Passthrough Flange
Pierburg CWA400 Pump (Modified w/ Fitting)
Pump Mounting Bracket
AN Shut-Off Valve
Water Pump Pigtail
1.5″ Hose Coupler (x1)
1.5″ Hose Clamps (x2)
1/8″ NPT Breather Vent (x1)
Billet Coolant Block-Off Fitting (x1)
3/4″ T-Fitting (x1)
3/4″ Straight Barb Fitting (x1)
1″ to 3/4″ Barb Reducer (x1)
Double Zip-Ties (x5)
Mounting Screws (x2)
M6 Short Bolts (x3)
M8 Long Bolts (x3)
M8 Lock Nuts (x3)
16AN 90° Fitting (x1)
16AN 45° Fitting (x1)
12AN 90° Fitting (x2)
10AN 90° Fitting (x2)
10AN 45° Fitting (x2)
Push-Lock 16AN 90° (x1)
Push-Lock 12AN 90° (x1)
Push-Lock 10AN Straight (x1)
16AN Line, 12AN Line, 10AN Line
16AN, 12AN & 10AN Push-Lock Hoses
1″ Hose Clamps (x6)

⚠️ Fitment Notice

With the configuration shown, this setup will not clear the factory exhaust system due to the OEM muffler size. The passthrough fitting will need to be relocated for vehicles running the stock exhaust.

🏁 Performance You Can Trust

The KLM Ice Box Kit is built for enthusiasts who demand the best cooling performance from their BMW G-Series. Whether you’re racing down the strip or cruising on the highway, this system ensures your intake air temps stay consistent, your engine stays protected, and your performance stays repeatable every pass.

Compatible with: BMW G80 M3, G82 M4, G83 M4 Convertible, G22 4-Series, and G87 M2

The items installed or applied to vehicles are intended strictly for off-road use only and track vehicles. These modifications may not comply with emissions, safety, or environmental regulations required for public road use under Environmental Regulatory Agency (ERA) laws. It is the sole responsibility of the vehicle owner or operator to ensure adherence to all applicable local, state, and federal regulations. Use on public roads may result in legal penalties or vehicle impoundment. Always verify compliance with local authorities before installation.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

If you're unsure whether a part will fit your vehicle, feel free to contact us here with your inquiry. Our helpful sales team will reach out to confirm if it's the right match for you.

We offer a flat-rate shipping fee across the continental United States. This excludes Alaska, Hawaii, and U.S. territories. For international orders, additional shipping costs will apply. Please contact us for a quote if you are outside the continental U.S.

Also, feel free to also contact us at ColoradoN5X@Gmail.Com for any other questions.

Not all items are covered by warranty. Items including warranty, will clearly state that there is warranty within the product description. Most of these items will be a standard 1-year warranty against manufacture defects. You, the customer, will be responsible for shipping and handling. We will fix/replace that item with a product that is in working condition if you meet the warranty criteria. Please note that you will be allowed ONLY 1 claim within the year for that product. ColoradoN5X is not responsible for any damage caused during the installation of our products.