Precision Fuel Flow with the Cummins 3964142 Fuel Supply Tube

Keep your Cummins ISLe or QSL9 engine running at peak efficiency with the 3964142 Injector Fuel Supply Tube—a critical link in your fuel system. Engineered for precise delivery of high-pressure fuel, this component ensures consistent combustion and reliable engine performance across demanding environments.

Key Features & Benefits

• Seamless Fuel Transfer
  Delivers stable, high-pressure fuel directly to the injector, reducing power loss and enhancing throttle response.

• Engineered for ISLE and QSL9
  Built to meet OEM standards, this part ensures perfect compatibility with Cummins ISLe and QSL9 engine models (OE ref: 3964142).

• Built to Withstand Pressure
  Manufactured from high-strength, corrosion-resistant steel for long-term reliability under extreme heat and vibration.

• Peace of Mind
  Covered by a 24-month warranty, giving you confidence in every engine start.

Ideal for Demanding Diesel Applications

Whether your equipment runs across long-haul routes, construction zones, or municipal transit systems, the 3964142 fuel tube is built for environments where consistency is critical. Trusted by operators of buses, trucks, and industrial equipment worldwide.

Why Volgen Power?

• Same-Day Shipping
  Orders placed by noon EST ship out the same day, Monday through Friday.

• Expert Support Team
  Need help verifying fitment? Our team knows Cummins inside and out.

• Competitive Pricing
  Premium-quality parts at prices designed for bulk buyers and cost-conscious operations.

Order Now – Power with Precision

Upgrade your engine’s fuel delivery system today. Add the 3964142 Injector Fuel Supply Tube to your cart and keep your Cummins ISLe or QSL9 engine running strong. Click “Buy Now” to start your order.

Fitment Tip: Confirm your engine model before ordering. Have questions? Contact our team or explore more Cummins fuel system spare parts in our catalog.