C4 26 Spline Night Stalker Series Stock Replacement No Stall Added Ford Torque Converter Part Number 25140

Ford C4 Night Stalker Series Torque Converter - Part #25140

Enhance your drivetrain with this premium-quality torque converter, engineered for demanding applications. Specifically designed for the Ford C4 platform, this unit is built to handle your vehicle's unique performance profile while maintaining reliable operation. Experience the difference of precision CNC machining and superior manufacturing standards.

Key Specifications

• Transmission Type: Automatic (Ford C4)
• Series: Night Stalker Series
• Part Number: 25140
• Stall Range: Stock Stall (No additional stall added)

Technical Details

• Core Diameter: 12 inch
• Bolt Circle Diameter (BCD): 11 7/16 inches
• Spline: 26 Spline Turbine Hub
• Impeller: Hardened Chrome Moley Impeller Hub
• Bearings: Torrington Style Incased Bearings
• Stator: Modified Extreme Duty Stator
• Crank Pilot Diameter: 1.375 inch (Precision CNC Machined)
• Bolt Size: 3/8 X 16 TPI (Grade 8 Hardware Required)
• Anti-Balloon Plates: None

Construction Quality

• Finishing Detail: 4 corner Tac Welded or Furnace-Brazed
• Testing Protocol: Leak & Pressure Tested, Digitally Balanced
• Manufacturing Standard: Precision CNC Machined and Quality Inspected at Every Step

Installation & Performance Guidance

• Use Old School Type F Transmission Fluid for optimal operational results.
• Always install an additional transmission cooler to manage heat buildup during aggressive driving.
• Blue Loctite is recommended for assembly processes.

Important Considerations

• All advertised stall ranges are based on specific vehicle setups and may vary significantly depending on your application. Please contact us for detailed consultation regarding your build.
• For maximum performance gains, we recommend upgrading to a "Street Bandit Series" torque converter if you have also upgraded Intake, Heads, Headers, Exhaust, Camshaft, or Gearing.
• If your vehicle utilizes power adders such as Nitrous Oxide (NOS), Turbocharger(s), Supercharger, or a Trans Brake, we suggest upgrading to our "Out Law Racing Series" torque converter.

Veteran-owned and family-run since 1970, we are committed to building high-performance drivetrain components. We offer expertise and quality assurance for your build.