Description
Product Overview
The Dorman HW438 is a precision‑engineered brake adjusting screw spring crafted from high‑strength steel. Measuring 2 x 2.38 x 2.88 inches, this compact component delivers consistent tension for brake systems, ensuring optimal pedal feel and safety. It matches a wide range of OEM part numbers—including 438, 438K, F73107, and more—making it a versatile replacement for many vehicle models. The spring’s robust construction resists corrosion and wear, extending service life even under demanding driving conditions.
Usage
Designed for automotive brake systems, the HW438 spring is ideal for both professional repair shops and DIY mechanics. Install it when servicing drum brakes, adjusting brake shoe tension, or restoring original brake performance after wear. Its universal fit covers a broad spectrum of makes and models, allowing technicians to streamline inventory and reduce part‑search time. Whether you’re working on a daily commuter or a performance vehicle, the HW438 provides reliable adjustment for safe stopping power.

Why Choose Us
Dorman’s reputation for quality automotive components underpins the HW438 spring. Each unit undergoes rigorous testing to meet OEM specifications, guaranteeing exact fit and function. The steel material is heat‑treated for maximum resilience, and the spring is packaged in a lightweight, protective box to prevent damage during shipping. With over a decade of market presence, Dorman offers dependable support and easy access to replacement parts, ensuring you can maintain brake systems with confidence.
Key Features
- High‑strength steel construction for long‑lasting durability
- Precise OEM fit for part numbers 438, 438K, F73107, and more
- Compact dimensions simplify storage and handling
- Corrosion‑resistant finish suitable for varied climates
- Easy installation saves labor time for technicians
FAQ
What vehicles are compatible with the HW438 spring?
The HW438 matches numerous OEM part numbers, making it suitable for many domestic and import models that use the 438, 438K, F73107, or related specifications. Consult your vehicle’s service manual for exact compatibility.
Can I install the spring myself?
Yes, the HW438 is designed for straightforward installation. Basic hand tools are sufficient, and the compact size allows easy access in tight brake assemblies.
Is the spring covered by a warranty?
Dorman provides a limited warranty against manufacturing defects, ensuring you receive a reliable component for your brake system.
How does the steel material benefit brake performance?
Steel offers superior tensile strength and resistance to fatigue, maintaining consistent spring tension which translates to stable brake pedal feel and reliable stopping power.
What is the packaging size and weight?
The spring ships in a package measuring 1.62 x 2.12 x 2.12 inches and weighs approximately 0.15 pounds, making it easy to store and handle.




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