Transfer Case for 2006-2011 RAM 1500, 2500 & 3500 with 23 Spline Input

Description

Routing high diesel and gas torque, RAM 2500 23-Spline Transfer Case packages handle 390 continuous input horsepower alongside 410 lb-ft torque at 5600 RPM. A heavy planetary gear set produces a 2.72:1 reduction ratio with electric dash switch operation, while 23 input splines interface flush against factory truck automatic transmissions.

Cast magnesium alloy AZ91D forms an extra-wide casing that prevents housing deflection under heavy tongue load towing. Internal planetary gear sets utilize carburized 8620 alloy steel with crown-shaved helical teeth to dissipate gear contact stress. A 1.5-inch wide multi-link steel drive chain routes torque to the front output shaft. Threaded fluid ports accept standard plugs, with the reservoir holding 2.0 quarts of ATF+4 fluid. Dry weight measures 85 lbs.

Key Features of RAM 23-Spline

Commercial fleet managers buy RAM 2500 23-spline transfer case units to keep heavy service trucks operating on construction sites. Each remanufactured unit undergoes thorough pressure testing to eliminate fluid leaks under severe axle articulation.

• A 2.72:1 low-range gear set multiplies engine torque for hauling heavy trailers out of soft ground
• Hardened 23-spline female input shafts mate flush with factory automatic transmission shafts
• Electric shift sector motors position internal shift forks within fractions of a second
• Extra wide drive chains maintain continuous front shaft rotation under heavy snow plow loads
• Precision RAM 2500 23-spline transfer case bearings control internal shaft deflection during continuous towing
• Magnetic drain plugs capture metallic wear debris to extend internal needle bearing service life
• Viton output shaft seals prevent automatic transmission fluid leaks at all operating temperatures

RAM 23-Spline Dynamic Torque Limits

Operating fluid temperature remains stable between 150°F to 185°F under full gross combined weight ratings. The mechanical gear train transfers up to 480 lb-ft continuous input torque at 3000 RPM without component deflection. A 1.00:1 high range ratio provides smooth highway speeds, while low range planetary gears provide 2.72:1 torque multiplication for maximum off-road traction. Heat radiates through the external ribbed magnesium casing, preserving fluid film thickness under continuous medium duty truck operations without auxiliary fluid coolers.

Shaft Yoke Driveline Alignment Specs

The rear output features a 31-spline slip yoke barrel that handles extreme suspension travel during heavy hauling. Front output shafts terminate in a 1350 series universal joint companion flange held to 0.002-inch dial indicator runout limits. A 260 mm drop center distance directs power straight to the front differential.

Electric Shift Service Inspection Protocol

Shift control functions through a dash selector switch wired to an external 12-volt shift motor mounted on the casing. This transfer case package is not engineered for full-time all-wheel drive street use, vehicle flat towing without front and rear driveshaft removal, or continuous dry pavement four-wheel drive operation.

• Inspect shift motor electrical harness connectors for corrosion each shift before operating
• Check fluid level at the casing upper fill plug every 250 operating hours
• Drain and replenish fresh ATF+4 transmission fluid every 12 months of service

RAM 23-Spline Crate Package Contents

A 2-Year commercial limited warranty protects all internal planetary gears, chains, and bearings against failure. The heavy wooden shipping crate contains the remanufactured transfer case unit, new electric shift motor, fluid drain plug, fill plug, and factory installation setup instructions for complete fleet maintenance integration.