The DeatschWerks VB40AX2 is a 40 amp voltage booster that raises supply voltage to two fuel pumps to increase their flow at high demand. It supports dual-pump fuel systems and is a universal-fit electronic module. Installs in-line with the pump wiring per the included instructions.
Specifications
| Type | Fuel pump voltage booster |
| Model | VB40AX2 |
| Rating | 40 amp |
| Pumps Supported | Dual pump (2 pumps) |
| Part Number | 4-00-VB40AX2 |
Documents: Installation Instructions (PDF) | Product Specifications Sheet (PDF)
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
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