BMS offers a variety of water methanol (WMI) tanks, both for universal use, and vehicle specific fitment. Our most popular tank options are the 1.25 gallon universal, and the 2 gallon universal. The 1.25g is meant to be mounted against a flat surface with the pump mounted below, while the 2g can be mounted anywhere in the trunk and includes an integrated pump mount and baffle providing a very clean easy to install package. We also offer several BMW application specific tanks as shown below.
1.25 Gallon Heavy-Duty Universal Water/Methanol Injection (WMI) Tank
The Burger Motorsports 1.25 gallon heavy-duty tank is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk.
This tank is thicker and stronger than the basic 1-gallon WMI tank. This tank features an easy fill filler nozzle, an anti-starvation reservoir with a pre-threaded bung for the included 90º compression pump feed fitting, a spill-catcher reservoir around the filler cap, a 2-way vented black plastic cap, and is translucent to allow visually checking the fluid level.
Tank dimensions: L 11" x W 4.5 x H 9"
1 Gallon Universal Water/Methanol Injection (WMI) Tank
The least expensive option this 1 gallon tank is compact and flexible allowing for a wide range of mounting on any flat vertical surface in the trunk. The tank is clear to allow visually checking the fluid level. Includes a 2-way vented black plastic cap and a compression pump feed fitting.
Tank dimensions: L 11" x W 4.5 x H 9"
2 Gallon Universal Low Profile Water/Methanol Injection (WMI)Tank
This tank allows the pump (sold separately) to mount to the bottom of the tank making for a clean and fast installation. It’s universal and will fit a wide variety of trunk applications. The larger capacity means more time between fill ups. Offered in black for a stealth appearance and in clear to allow visually checking the fluid level. Includes a 2-way vented black plastic cap and a compression pump feed fitting.
Features & Benefits
• Pump mounts directly to the tank (pump not included)
• Works with all DDP 5800 pumps
• Super low profile design
• Available in clear for visually checking fluid levels
• Available in black for a stealth appearance
• Includes 2-way vented black plastic cap
• 4 mounting holes in the feet of the tank
• Optional upgraded blue billet lid with 1-way check valve available here.
• Includes a compression pump feed fitting
• Made in the USA
Tank dimensions: L 15.5" x W 8" x H 8.25"
BMS 2 Gallon Stealth Water/Methanol Injection (WMI) for F10 5 Series BMW hides under the trunk deck
This completely custom design fits cleanly within the existing trunk cavity in your F10 BMW for the ultimate easy to install no compromise kit. The Water/Methanol Injection (WMI) pump mounts directly to the bottom of the tank allowing for a quick and clean installation. The bottom of the tank includes a sump and baffle allowing for consistent performance even as the tank drains. Includes 2-way vented black plastic cap and a compression pump feed fitting.
Features & Benefits
• Pump mounts directly to the tank
• Works with all DDP 5800 pumps
• Super low profile design
• Available in clear for visually checking fluid levels
• Bolts to an existing point in the vehicle
• Includes 2-way vented black plastic cap
• Optional upgraded blue billet cap with 1-way check valve available here.
• Includes a compression pump feed fitting
• Made in USA
Tank dimensions: L 16.5" x W 6.5" x H 8.25"
Vehicle Fitment
• 2011-2016 F10 BMW 5 Series sedan all models including M5
3 Gallon Stealth Water/Methanol Injection (WMI) Tank for F Chassis BMW hides under the deck in your trunk!
This tank is a completely custom design that neatly hides away in the trunk cavity below the deck lid found in 2013+ F3X and 2015+ F8X chassis vehicles. The Water/Methanol Injection (WMI) pump mounts directly to the bottom of the tank allowing for a quick, clean, and completely stealthy installation. The bottom of the tank includes a sump and baffle, allowing for consistent performance even as the tank drains. Includes 2-way vented black plastic cap and a compression pump feed fitting.
Features & Benefits
• Pump mounts directly to the tank (pump sold separately)
• Works with all DDP 5800 pumps
• Super low profile design hides under the deck in the existing trunk cavity •
• Available in clear for visually checking fluid levels
• Includes 2-way vented black plastic cap
• Threaded mounting points in the feet of the tank
• Optional upgraded blue billet lid with 1-way check valve available here.
• Includes a compression pump feed fitting
• Made in the USA
Tank dimensions: L 26.75" x W 9.75" X H 7.5"
Vehicle Fitment
• 2012-2018 BMW 3 Series F30 sedan
• 2015-2020 BMW F80 M3
• 2014-2020 BMW 4 Series F32 coupe
• 2015-2020 BMW F82 M4 (does not fit convertible)
Stealth Tank for G20 G22 & G80 M3 & G82 M4 BMW tucks neatly in the side pocket of your trunk!
This water/methanol injection (WMI) tank is a completely custom design that neatly hides away in the left side trunk cavity found in most G20 G22 & G80 M3 & G82 M4 BMW vehicles. The pump mounts directly to the back of the tank allowing for a quick, clean, and completely stealth installation. The bottom of the tank includes a rear sump allowing for consistent performance even as the tank drains. Includes 2-way vented black plastic cap and a compression pump feed fitting.
Features & Benefits
• Leaves trunk completely clear for full use of space
• Super low profile design tucks neatly into the existing left side trunk cavity
• 3.5 Gallon (13.25 liters) capacity
• Available in transparent white for visually checking fluid levels and opaque black for a stealth appearance.
• DDP 5800 pump mounts directly to the tank (pump sold separately)
• Includes 2-way vented black plastic cap
• Optional upgraded blue billet lid with 1-way check valve available here.
• Includes all mounting hardware
Tank dimensions: L 20.5" x W 11" X H 13.5"
Vehicle Fitment
BMW M3
• 2021+ S58 G80 BMW M3
• 2021+ S58 G80 BMW M3 Competition
BMW M4
• 2021+ S58 G82 BMW M4 (requires modification to fit)
• 2021+ S58 G82 BMW M4 Competition (requires modification to fit)
BMW 3 Series
• 2020-2023 B58 G20 BMW M340i including xDrive
• 2019+ B48 G20 BMW 330i, 330e including xDrive
BMW 4 Series
• 2021+ B58 G22 BMW M440i including xDrive (requires modification to fit)
• 2021+ B48 G22 BMW 430i including xDrive
What's included
(1) BMS Stealth Tank
(1) 2-way vented black plastic filler cap
(1) brass Compression Tube Fitting for 1/4" Tube OD x 1/4 NPT Male
(1) 18" of line
(2) Powder coated stainless lower bracket
(2) Rubber lower bracket grommets
(2) BMS custom bell washers
(2) Stainless Steel Flanged Button Head Screws M6 x 1 mm Thread, 8 mm Long
(1) Plastic upper bracket
(2) Self Tapping upper bracket screws 1/4" Size, 1-1/2" Long
(4) Pump Screws - Phillips Passivated Stainless 10-32 Thread, 1-1/4" Long
(2) 1/4 push male to female 90º to pump in
(1) Button Head Hex Drive Screw 18-8 Stainless M8 x 1.25 Thread Size, 15mm Long (bracket to chassis)
(1) Nylon lock nut - M8 x 1.25 mm Thread, 9.5 mm High (bracket to chassis)
(1) Button Head Hex Drive Screw Passivated 18-8 Stainless Steel, M10 x 1.50 mm Thread, 16mm Long (bracket to chassis)
Optional Upgraded Billet Water/Methanol Injection (WMI) tank cap w/safety check valve
This high-quality custom billet Water/Methanol Injection (WMI) cap includes an integrated check valve to let air in and prevent dangerous WMI vapor/fumes from getting out! Made in the USA. Available here.
