maXpeedingrods 12V Electric Vacuum Pump Kit for Brake Booster — Inline Switch, Relay & Intermittent Duty

maXpeedingrods 28146 is a 12V electric vacuum pump kit designed to supply consistent vacuum to a vehicle's brake booster when engine vacuum is insufficient.

This compact kit includes an efficient electric pump, an inline vacuum switch, relay and distributor, wiring with pre-crimped terminals, and mounting hardware to simplify installation. It’s engineered to run intermittently—only when vacuum falls below the preset threshold—reducing continuous motor wear and audible operation. The system is suitable for cars or trucks that lack adequate vacuum at idle or under certain loads and where a reliable supplementary vacuum source is required.

How does the pump detect when to run?

The kit features a self-adjusting inline vacuum switch that monitors booster vacuum and cycles the pump automatically. When vacuum drops under the set lower limit the pump engages, and it shuts off once vacuum rises above the higher set point—preventing unnecessary operation.

• Factory switch typically engages when vacuum falls near 18 inHg and disengages around 22 inHg.
• Switch response helps maintain stable booster assist under variable engine conditions.
• Relay and distributor coordinate pump power for safe cycling.

Is this noisy and how is noise minimized?

The maXpeedingrods pump is designed for intermittent operation rather than continuous running, which reduces overall noise. The control switch cycles the motor only as needed, so you’ll usually hear it briefly during low-vacuum events rather than a constant hum.

• Intermittent duty lowers audible runtime compared with always-on units.
• Compact motor housing and mounting hardware limit vibration transfer.
• Install location recommendations in the manual help reduce cabin noise exposure.

What’s included and how difficult is installation?

The kit ships with the pump assembly, vacuum switch, relay, distributor, pre-cut wiring with terminals, and brackets/fasteners. It’s built to bolt close to the booster and requires standard hand tools; basic mechanical skill is sufficient for most installs.

• All necessary mounting hardware and pre-terminated wires are supplied.
• Connects directly to the booster vacuum line using included fittings.
• Typical install involves mounting the pump, wiring to 12V and ground through the relay, and plumbing to the booster.

Will this work with my vehicle and what should I check?

The pump is intended for vehicles that produce low manifold vacuum at idle or under load and can be fitted to most systems that accept an auxiliary vacuum source. Verify space for mounting and compare existing vacuum line fittings before purchasing to ensure compatibility.

• Suitable for cars with 15 inHg or less vacuum at idle where extra assist is needed.
• Confirm available 12V power and a nearby ground point for relay wiring.
• Measure accessible vacuum hose ID and routing to plan plumbing and mounting location.

Who is this for: The maXpeedingrods 28146 12V Electric Vacuum Pump Kit is made for DIY mechanics, performance tuners, and vehicle owners facing low brake-booster vacuum due to engine modifications, forced-induction setups, aging manifolds, or heavy-duty use. It’s also useful for older vehicles with diminished idle vacuum. If you need a supplemental, automatically controlled vacuum source that installs with common tools and includes the necessary electrical and mounting components, this kit offers a compact, ready-to-fit solution. For specific vehicle fitment questions or installation guidance, maXpeedingrods customer support can assist.