Description
Product Overview
The FQRANBO Thermal Bypass Valve is a precision‑machined component made from high‑strength aluminum alloy. Designed for Dodge Ram 2500 and 3500 trucks equipped with 6.7L Cummins engines (2013‑on), it replaces the factory bypass design to ensure 100% of the transmission cooler flow passes through the cooler, reducing operating temperatures and extending component life. Dimensions are compact at 3.9 x 3.5 x 1.9 inches and it weighs only 10.6 ounces, making it easy to handle during installation.
Usage
Ideal for heavy‑duty towing, off‑road adventures, and daily driving in hot climates, this valve maintains optimal transmission temperature for better performance and durability. It fits both 68RFE and AS69RC transmissions, providing reliable cooling for commercial fleets and personal trucks alike.

Why Choose Us
FQRANBO combines aerospace‑grade aluminum alloy with a corrosion‑resistant machined finish, delivering a robust part that resists deformation under pressure. Our valve undergoes strict quality testing and carries a 4.1‑star rating from verified customers, reflecting consistent satisfaction and dependable performance.
Key Features
- Machined aluminum alloy construction for strength and heat resistance
- Direct bolt‑in replacement – no line cutting required
- Ensures 100% transmission cooler flow, lowering fluid temperature
- Compatible with 2013‑on Dodge Ram 2500/3500 6.7L Cummins models
- Compact size and lightweight design for easy installation
FAQ
Is this valve compatible with my 2015 Dodge Ram 3500?
Yes, it fits 2013‑on Dodge Ram 2500 and 3500 trucks equipped with the 6.7L Cummins engine and 68RFE or AS69RC transmissions.
Do I need special tools to install the valve?
No special tools are required. The valve bolts directly into the existing inlet connection, and the old line can be disconnected without cutting.
Will this improve my transmission’s lifespan?
By forcing full cooler flow and reducing fluid temperature, the valve helps prevent overheating, which can extend the life of transmission components.
What warranty does FQRANBO provide?
The product includes a one‑year limited warranty covering manufacturing defects.
Can I use this valve with other truck brands?
This specific model is engineered for Dodge Ram 2500/3500 6.7L Cummins applications only.






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