Speedflow -4 Restrictor 40 Thou Hole 399-04

SKU: 399-04 Barcode: 9342122003073
Regular price $7.68

Optimize Your Oil Flow with Precision Engineering

Enhance the performance and efficiency of your oil system with the Speedflow -4 Restrictor 40 Thou Hole (399-04). Specifically designed for high-performance automotive applications, this restrictor is a must-have component for enthusiasts seeking to fine-tune their oil flow for optimal performance.

Key Features:

  • High-Quality Construction: Crafted from robust materials to endure extreme conditions, ensuring durability and long-lasting performance.
  • Precision Engineering: The 40 thou hole provides precise oil flow restriction, improving the efficiency and functionality of your vehicle's oil system.
  • Versatile Compatibility: Perfect for a range of motorsport and automotive applications, compatible with -4 AN fittings.
  • Easy Installation: Designed for a hassle-free installation process, allowing you to get back on the road or track quickly and efficiently.

Why Choose Speedflow?

Speedflow is a trusted name in the automotive industry, known for its unwavering commitment to quality and innovation. Speedflow products are relied upon by professional racers and car enthusiasts worldwide for their superior performance and reliability.

Enhance Your Oil System Performance

Whether you're fine-tuning your oil system for racing or boosting your vehicle's overall efficiency, the Speedflow -4 Restrictor 40 Thou Hole (399-04) is the ideal choice. Experience the remarkable difference that precision engineering can make in your automotive setup.


  • Part Number: 399-04
  • Hole Size: 40 Thou
  • Material: High-Quality Alloy
  • Compatibility: Fits -4 AN Fittings

Upgrade your oil system today with the Speedflow -4 Restrictor 40 Thou Hole (399-04) and unlock the full potential of your vehicle's performance. Order now and discover the Speedflow difference!