68RFE Pump Half (With Gears and Plate) 2007.5-2018

The factory 68RFE pump half has several weaknesses that can lead to premature transmission failure. One of the primary issues is its low oil volume capacity, which limits the transmission’s ability to maintain high pressure at low engine RPMs. This pressure drop is especially problematic when towing heavy loads or operating in 4th, 5th, and 6th gears, often causing the Overdrive clutches to slip, which can lead to gear failure over time.

Another concern is the material used in the stock pump half. The factory version is made from a weaker cast material that is prone to warping under heat and stress. As the pump half distorts, it can cause hydraulic cross leaks between the pump body and the steel separator plate. These leaks disrupt transmission function and contribute to issues such as overheating, delayed engagement, converter clutch drag when stopped, rationality codes, and reduced cooler flow.

The Solution: A Billet 68RFE Pump Half

To eliminate these issues, a CNC-machined billet aluminum pump half is an ideal upgrade over the factory cast version. The use of billet aluminum provides increased durability and resistance to warping, ensuring a secure seal to prevent hydraulic cross leaks and maintain proper fluid pressure. With tighter machining tolerances, a billet pump half helps the 68RFE transmission maintain consistent line pressure, even at low RPMs. This ensures the clutch packs stay fully clamped, preventing premature wear and transmission failure, particularly under heavy towing or high-stress conditions.

Key Features:

• Billet aluminum construction for enhanced durability and heat resistance
• Prevents warping and hydraulic cross leaks for improved reliability
• Maintains oil pressure and volume to reduce clutch slippage and gear failure
• Designed for 2007.5-Present 6.7L Cummins 68RFE transmissions
• Works with factory pump gears (Complete pump assembly sold separately)

Why Upgrade?

A billet pump half is a crucial component for improving the longevity and performance of the 68RFE transmission. Whether the truck is used for daily driving, towing, or heavy hauling, this upgrade helps maintain optimal fluid pressure and transmission efficiency, reducing the risk of premature failure. For those looking to strengthen the 68RFE, a billet pump half is a smart investment in long-term reliability and performance.