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Air and Fuel Fuel Pumps, Regulators and Components

Kenne Bell

BOOST-A-PUMP 40-Amp Voltage Booster

$385.00 $369.00 Save $16.00

SKU: KB89081P-21V

In Stock
In Stock
Ships by Aug 31
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$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Kenne Bell BOOST-A-PUMP is a 40-amp, 21V unit designed to increase fuel pump flow. It activates only at full throttle or boost, preventing fuel system overload at idle or cruise. This device is compatible with any electric pump and can be upgraded from 17.5V to 21V.
Show original supplier description
The Kenne Bell BOOST-A-PUMP is a 40-amp, 21V power module designed to enhance your fuel system's performance, particularly when paired with a supercharger or turbocharger. This unit activates exclusively during full throttle or boost conditions, ensuring the fuel system is not unnecessarily stressed at idle or cruise, thereby preventing fuel heating. Installation is straightforward, with options for a "Universal Splice" kit that requires cutting only one wire, or a Plug N Play Wiring Harness version for those who prefer not to splice. The BOOST-A-PUMP features fused circuit protection and a 1000HP rating with OEM in-tank pumps. It is available for single fuel pump setups; dual pump setups require a separate universal dual pump kit (PN: KB89063). This 21V Competition Kit utilizes a Boost Activation Switch (BAS) or Vacuum Activated Switch (VAS) because 21V operation should not be continuous on any pump or the Ford FPDM. Unlike complex systems, this unit requires no additional computers, software, or re-tuning. It is designed for use with 2011-2014 Mustang V8 or V6 models equipped with a supercharger or turbocharger.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKenne Bell
Part NumberKB89081P-21V
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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