FQRANBO Transmission Cooler Thermostatic Bypass Valve for 68RFE 2013–2018 Ram 6.7L Cummins — Billet Aluminum Direct-Fit (Black)

FQRANBO's thermostatic bypass valve is a direct-fit upgrade for 68RFE transmissions on 2013–2018 Dodge Ram 2500/3500 6.7L Cummins trucks that improves coolant routing and temperature stability for the transmission cooler.

If you run a Ram 2500 or 3500 with the 68RFE transmission and 6.7L Cummins diesel (model years 2013–2018), this thermostatic bypass valve replaces the factory unit to better manage flow through the transmission oil cooler. Built from billet 6061 aluminum with corrosion-resistant finishes, the valve removes the restrictive orifice that can impede heat exchange, helping the cooler and transmission run more consistently under towing, hauling, or stop-and-go use.

How does this bypass valve change transmission cooling behavior?

The thermostatic element opens and closes to route fluid either through the full cooler path or through a bypass, depending on temperature. That adaptive routing reduces the orifice restriction that can slow heat exchange, allowing the cooler to reach and maintain targeted operating temperatures more reliably.

• Thermostatic action adjusts flow based on fluid temperature.
• Removes restrictive orifice to improve heat exchanger efficiency.
• Helps maintain consistent transmission temperatures during load.

What materials and construction should I expect from the FQRANBO valve?

This replacement is machined from 6061 billet aluminum for strength and resistance to corrosion, with precision tolerances to fit 68RFE housings. The robust structure resists impact and deformation while providing long service life under typical truck use.

• Billet 6061 aluminum body for durability and corrosion resistance.
• Precision machined to match OEM mounting and flow characteristics.
• Sturdy design resists deformation and maintains sealing surfaces.

Is this a direct fit for my 2013–2018 Dodge Ram 2500/3500 with 6.7L Cummins?

Yes — the valve is designed as a direct replacement for the thermostatic bypass on Dodge Ram trucks equipped with the 68RFE transmission and 6.7L Cummins diesel engine produced from 2013 through 2018. Installation uses the existing mounting and fluid connections.

• Fitment: Dodge Ram 2500/3500, 68RFE transmission, 6.7L Cummins, 2013–2018.
• Plugs into the stock bypass location without major modifications.
• Works with factory transmission cooler plumbing and lines.

What support and warranty come with this replacement valve?

FQRANBO backs this product with a one-year warranty and responsive customer service. If you encounter fitment or performance questions, the company offers support and aims to respond promptly within the stated timeframe.

• One-year limited warranty included with purchase.
• Manufacturer support for installation and troubleshooting.
• Customer service response typically within 24 hours.

Who is this for: This thermostatic bypass valve is intended for Dodge Ram 2500 and 3500 owners with the 68RFE transmission and 6.7L Cummins diesel (model years 2013–2018) who want a durable, precision-machined replacement that improves transmission cooler flow and temperature control during towing, heavy loads, or frequent highway driving. It's suitable for owners performing routine maintenance or upgrading cooling performance without altering factory plumbing or requiring complex modifications.