Air and Fuel› Superchargers, Turbochargers and Components

MODE Auto Concepts

13psi Boost Reference Switch

$50.00

SKU: BMW-BOOST-REFERENCE-HARNESS-E-SERIES-F-SERIES

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

This harness is favored by many BMW pump manufacturers and tuners for its reliability and comprehensive design. At its core, the harness features a pre-set 13psi boost reference switch, commonly referred to as a "hobbs switch." This switch is specifically designed for automotive applications and can withstand exposure to oil. The system is presented as the preferred method for activating secondary fuel pumps in performance-oriented BMW vehicles. The product is compatible with a wide range of BMW E-Series and F-Series models, as well as the Toyota Supra and MINI vehicles. Specific application details can be found by selecting the vehicle make and model on the MODE Auto Concepts website.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandMODE Auto Concepts
Part NumberBMW-BOOST-REFERENCE-HARNESS-E-SERIES-F-SERIES
CategoryAir and Fuel

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

Buy with Confidence

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.

View Full Return Policy

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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

View Full Shipping Policy