What is the purpose of a 4-port boost control solenoid?

A 4-port boost control solenoid allows for more precise control over your turbocharger's boost pressure. It can be plumbed to control both the boost signal to the wastegate and the boost signal to the intake manifold, enabling finer adjustments and more stable boost levels.

What does the 33Hz operating frequency mean?

The 33Hz frequency refers to how quickly the solenoid can open and close. A higher frequency, like 33Hz, allows for faster response times and more accurate modulation of boost pressure, which is beneficial for consistent performance.

What is 1/8th NPT thread size?

1/8th NPT is a common thread size for plumbing in automotive applications, particularly for boost lines and sensors. It's a standardized pipe thread that ensures compatibility with many fittings and hoses.

Haltech 4 Port Boost Control Solenoid HT-020401

Name: Haltech Boost Control Solenoid 4 Port 1/8th NPT 33Hz
Brand: Haltech
SKU: haltech-haltech-boost-control-solenoid-4-port-1-8th-npt-33hz-t14-561046
Price: 160.29 USD
Availability: BackOrder

Haltech Boost Control Solenoid 4 Port 1/8th NPT 33Hz

$160.29

On Backorder — Expected to ship by May 9, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Haltech 4 Port Boost Control Solenoid 1/8th NPT 33Hz. This solenoid helps manage boost pressure for turbocharged engines.

Key Features

Fits turbocharged vehicles with 1/8th NPT plumbing.
Features a 4-port design for flexible boost control plumbing.
Operates at a 33Hz frequency for precise boost management.
Uses standard 1/8th NPT threads for easy installation.
From Haltech, a well-known brand in engine management.

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Product Details

This is the Haltech 4-port boost control solenoid, a key component for managing boost pressure in turbocharged vehicles. It uses a 1/8th NPT thread size for easy integration into your plumbing and operates at a frequency of 33Hz, allowing for precise control over your engine's boost levels. If you're building a custom turbo setup or upgrading your existing system, a well-functioning boost solenoid is critical for both performance and engine safety.

The 4-port design offers flexibility in how you plumb it, allowing for more advanced control strategies compared to simpler 2-port solenoids. This means you can achieve more consistent and accurate boost targets, which is especially important when tuning for maximum power or drivability. Haltech is known for well-built electronics, and this solenoid is designed to handle the demands of a performance engine bay.

When installing, ensure you use appropriate thread sealant for the 1/8th NPT fittings to prevent any air leaks. Proper plumbing is essential for the solenoid to accurately regulate the wastegate or boost controller. This part is a solid option for anyone looking to fine-tune their turbo system's performance.