Luk TC0012 Automatic Transmission Torque Converter

LuK TC0012 Torque Converter for 48RE Diesel

The LuK TC0012 automatic transmission torque converter is built for the diesel version of the 48RE and follows the OE size profile for straightforward application matching. It uses a quad-plate lock-up clutch, LuK friction material, INA thrust bearings, and furnace-brazed fins to support consistent operation in demanding Ram 2500 and Ram 3500 use.

• Automatic transmission torque converter for the diesel 48RE
• Quad-plate lock-up clutch for increased torque capacity
• LuK friction material for controlled lock-up performance
• INA thrust bearings for smooth internal operation
• Furnace-brazed fins for added durability
• 27-spline design
• Mounting bolts with M10 x 1.5 thread noted in fitment data
• Comparable size profile to the original converter

Fitment Details

Compatible With 1994-2008 Dodge Ram 2500, N/A. Compatible With 1994-2007 Dodge Ram 3500, N/A. This part cross-references 4840012770 for the same application.

How TC0012 Is Built

TC0012 is assembled from all-new components to deliver a consistent build and repeatable performance. The converter is engineered for the diesel 48RE transmission and uses a quad-plate lock-up clutch instead of the OE single-plate design, giving it greater torque-handling capacity. The internal bearing and friction package is selected to support smooth engagement and long service life, while the furnace-brazed fin construction adds strength under heat and load. The TC0012 part number is a direct reference point when matching the correct converter for Ram 2500 and Ram 3500 diesel applications.

Common Problems This Part Addresses

• Shudder or inconsistent lock-up during converter engagement
• Reduced torque capacity in diesel 48RE applications
• Wear-related noise or rough operation from internal bearing fatigue
• Converter durability concerns after remanufactured unit failure
• Fitment issues when replacing the original 48RE diesel torque converter

Installation Notes and Tips

Verify transmission code, spline count, and converter dimensions before installation. Confirm the 48RE diesel application and compare the TC0012 measurements to the original unit to ensure proper fit. Inspect the flexplate, pump, and related transmission components during replacement, and follow factory service procedures for converter seating and fluid fill.

Quality Assurance

LuK builds the TC0012 with new components rather than remanufactured parts, which helps avoid issues tied to reused converter cores. The design uses LuK friction material, INA thrust bearings, and furnace-brazed fins to support dependable operation in diesel Ram 2500 and Ram 3500 service. The TC0012 part number is also listed with OE cross-reference 4840012770.