BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
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  • Load image into Gallery viewer, BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
  • Load image into Gallery viewer, BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
  • Load image into Gallery viewer, BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve
  • Load image into Gallery viewer, BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve

BMS Billet Water/Methanol Injection (WMI) Tank Cap with Safety Check Valve

£76.70
£76.70
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Upgraded Billet Water/Methanol WMI tank cap with integrated safety check valve

The Burger Motorsports custom billet Water/Methanol Injection (WMI) cap includes an integrated heavy-duty check valve to let much-needed air in and prevent dangerous WMI vapor/fumes and liquid from getting out!

Each cap is CNC machined in the USA from a solid block of billet aluminum, engraved with the BMS logo, and anodized blue or red for protection.

⚠️ ATTENTION: Check valve piston must be lightly lubricated if tank shows signs of vacuum. One drop of penetrating oil or motor oil in the top will keep the check valve operational. Remove dirt with compressed air before oiling.Â

Features & Benefits

• Integrated heavy-duty check valve lets air in but not out
• Specifically designed to prevent evaporation
• Keeps vapors inside the tank
• Made from a solid block of billet aluminum
• Blue anodizing for corrosion protection
• Exaggerated grips for easy removal
• Integrated heavy-duty o-ring
• Made in the USA


Tank fitment
• BMS 1 and 1.25 gallon tank
• BMS 2 gallon universal tank
• BMS 2 & 3 gallon stealth tank

Burger Motorsports water methanol tank cap