BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank

Safe, sleek, and ready to install out of the box! Your choice of color and accessories! 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. Optional upgraded blue billet water/methanol injection (WMI) with 1-way check valve (ES4714530) Burger Motorsports DDP 5800 water methanol alcohol Injection pump (ES4714532) 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) Tank dimensions: L 20.5" x W 11" X H 13.5" What's included: (1) 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)
T#: 20815187 | Part#: BMW35G28
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Starting at $279.00
279.00 $279.00
This product is backed by our
Lifetime Replacement Program! Read more here
Availability:
Available from Supplier
Est. Ship Date:
Ships on Jul 21, 2026
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Burger Motorsports BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank BMW35G28
BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank - Translucent White
Burger Motorsports - Corporate Logo
T#: 20551648
|
Part#: BMW35GST
Availability:
Available from Supplier
Est. Ship Date:
Ships on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$279.00
Qty: 1
Burger Motorsports BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank BMW35G28
BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank - Black
Burger Motorsports - Corporate Logo
T#: 20551647
|
Part#: BMW35GSB
Availability:
Ships Directly From Supplier
Est. Ship Date:
on Jul 21, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$279.00
Qty: 1
None
Burger Motorsports BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank BMW35G28
Water/Methanol Injection Pump - Quick Connect Style Push Lock Fittings
Burger Motorsports - Corporate Logo
T#: 20815182
|
Part#: BMSDDP5800PF
Availability:
Ships Directly From Supplier
Est. Ship Date:
in 1 Business Day
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$120.00
Qty: 1
Burger Motorsports BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank BMW35G28
Water/Methanol Injection Pump - Threaded Fittings
Burger Motorsports - Corporate Logo
T#: 20815183
|
Part#: BMSDDP5800TF
Availability:
In Stock
Est. Ship Date:
on Jul 6, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$120.00
Qty: 1
None
Burger Motorsports BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank BMW35G28
BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve
Burger Motorsports - Corporate Logo
T#: 20815185
|
Part#: BMSWMITC
Availability:
In Stock
Est. Ship Date:
on Jul 6, 2026
Lifetime Replacement
This product is backed by our
Lifetime Replacement Program! Read more here
$59.00
Qty: 1
BMS 3.5 Gallon Stealth Water/Methanol Injection (WMI) Tank
$279.00