Piping Hot Art Works RevMax 68RFE Thermal Bypass Valve & Steel Filter Screw for RAM 2500/3500 (6.7L) — Improves Cooler Flow, Durab

RevMax's steel transmission filter screw and 68RFE thermal bypass valve replace weak factory parts to improve cooler flow and secure the transmission filter on 6.7L Cummins Rams.

If you drive a Dodge Ram 2500 or 3500 with a 6.7L Cummins and the 68RFE transmission, the factory thermal bypass valve and plastic filter screw are known weak points that can limit cooler circulation and allow the filter to loosen over time. This RevMax bundle pairs a robust steel filter-screw replacement with a bypass valve designed to remove OEM flow restrictions, increasing cooler throughput and giving DIY technicians a straightforward upgrade path that fits 2007.5–2024 applications and specifically complements the 2013–2018 Ram models in this kit.

How does the RevMax bypass valve improve transmission cooling?

The bypass valve eliminates the built-in thermal restriction that blocks full cooler circulation at certain temperatures, so fluid can flow continuously to the cooler from the moment you start the engine. By removing that bottleneck, the system moves substantially more fluid through the cooler, which lowers operating temperatures under load and during towing.

• Restores full-time cooler flow rather than intermittent bypassing
• Boosts fluid flow to the cooler — manufacturer estimates up to 87% increase
• Helps reduce transmission heat buildup during towing and heavy use

What makes the steel filter screw better than the factory plastic screw?

The OEM plastic filter screw can crack, strip, or loosen with age and vibration. RevMax replaces that vulnerable component with a machined steel screw that resists damage and holds the transmission filter more securely, lowering the chance of a loose or dislodged filter that could impair filtration or cause service issues.

• Durable steel construction resists cracking and thread wear
• Direct-fit design for easy swap with the factory screw
• Includes installation guidance so you can complete the upgrade confidently

Can I flush the cooler lines without special tools after installing the valve?

Yes — the RevMax valve is designed to let you flush cooler lines using room-temperature fluid without needing expensive hot-flush equipment. That makes routine maintenance and DIY servicing simpler and more accessible while helping clear debris before it circulates through the cooler system.

• Flush cooler lines with standard shop tools and cool fluid
• Reduces the need for costly hot flushing machines at a shop
• Useful during cooling-system service or cooler line replacement

What materials and sealing components are included in the kit?

The bypass valve is precision-machined from 6061 aluminum and features integrated cooling fins to aid heat dissipation. The package also includes two premium O-rings to ensure a secure, leak-free installation of the valve and associated fittings.

• 6061 aluminum body with cooling-fin design for improved heat transfer
• Two premium O-rings provided for reliable seals
• Steel filter screw replaces the original plastic fastener for added strength

Who is this for: This RevMax bundle is intended for Dodge Ram owners, fleet managers, and diesel enthusiasts who tow frequently, operate under heavy loads, or want to replace OEM weak points with more durable components. It's well suited to DIY mechanics comfortable with basic transmission-access procedures and professional shops looking to offer an affordable upgrade that improves cooler efficiency and filter security on 68RFE-equipped 6.7L Cummins Rams, particularly model years 2013–2018 included in this kit.