Humvee M998 Power Steering Pump RCSK18330 5583754 12339495 5583754

Description:

The Humvee M998 Power Steering Pump RCSK18330 (OEM Part Numbers 5583754 and 12339495) is a hydraulic power steering pump designed to supply pressurized hydraulic fluid for responsive steering assistance in AM General HMMWV military vehicles. Commonly installed on Humvee M998, M1025, M1035, M1043, M1097, M1151, and other HMMWV variants equipped with 6.2L or 6.5L diesel engines. Maintenance technicians and military vehicle restoration specialists use this pump for replacement of worn or leaking steering pumps, steering system repairs, and restoration of smooth, reliable steering performance.

Applications:

The Humvee M998 Power Steering Pump is commonly used in military HMMWV fleets, AM General Humvee vehicles, and Hummer H1 platforms where hydraulic steering assistance is required. It delivers hydraulic pressure to the steering gear, reducing steering effort while maintaining precise vehicle control during on-road and off-road operation. This pump is suitable for direct replacement in vehicles using the specified OEM part numbers.

Technical Specifications:

• Compatible Vehicle: AM General HMMWV / Humvee M998 Series
• Product Type: Hydraulic Power Steering Pump
• Replacement Part Number: RCSK18330
• OEM Part Numbers: 5583754, 12339495
• Additional OEM References: 12339495-1, 5573111, 7845261
• NSN: 2530-01-460-2439
• Engine Compatibility: 6.2L and 6.5L Diesel Engines
• Pump Type: Hydraulic Power Steering Pump with Reservoir (configuration dependent)
• Function: Supplies hydraulic pressure to the power steering system
• Mounting: Direct OEM Replacement
• Application: Military tactical vehicles and Hummer H1 steering systems
• Designed for continuous-duty heavy-duty vehicle applications.

Common Replacements:

• AM General 12339495-1 Power Steering Pump
• AM General 5573111 Power Steering Pump
• AM General 7845261 Power Steering Pump