CAT 2508337 (250-8337) Piston Pump | Fits 120M 12M 140M 14M 160M Motor Grader

CAT 2508337 (250-8337) Piston Pump | Fits 120M 12M 140M 14M 160M Motor Grader

Premium hydraulic piston pump designed as a direct OEM-compatible replacement for Caterpillar 120M, 12M, 140M, 14M, and 160M motor graders. Built to deliver consistent hydraulic performance and long service life in demanding road construction, grading, and land leveling applications.

Product Highlights

• Part Number: 2508337 / 250-8337
• Direct Fit: No modifications required
• High Performance: Meets or exceeds original Caterpillar specifications
• Durable Construction: Precision-engineered for long service life
• Wide Application: Suitable for road construction, grading, and land leveling projects

Technical Specifications

• Part Number: 2508337 / 250-8337
• Product Type: Variable Displacement Piston Pump
• Brand Compatibility: Caterpillar (CAT)
• Application: Hydraulic System
• Warranty: 12 Months

Compatible Models

This piston pump fits the following Caterpillar motor graders:

• Caterpillar 120M Motor Grader
• Caterpillar 12M Motor Grader
• Caterpillar 140M Motor Grader
• Caterpillar 14M Motor Grader
• Caterpillar 160M Motor Grader

Applications

• Motor Grader Blade Lift and Circle Functions
• Motor Grader Steering and Articulation
• Motor Grader Grading and Road Maintenance
• Road Building and Land Leveling Projects

Why Choose This Pump?

• Quality Guaranteed - Manufactured to meet OEM standards
• Ready to Ship - In stock and available for immediate dispatch
• Expert Support - Technical assistance available
• Competitive Pricing - Cost-effective alternative to dealer parts

Frequently Asked Questions

Q: What are the symptoms of a failing hydraulic piston pump on CAT 120M, 12M, 140M, 14M, or 160M motor graders?
A: Common signs include slow or weak blade lift and tilt response, the blade hesitating or failing to hold grade position, hydraulic oil overheating during extended grading operations, whining or knocking noise from the pump area, and visible hydraulic fluid leakage. The 120M, 12M, 140M, 14M, and 160M are modern motor graders used in road construction and maintenance — pump failure causes loss of blade control accuracy and reduced grading efficiency, increasing rework rates.

Q: Does the 2508337 fit all five motor grader models?
A: Yes, the 2508337 (250-8337) is designed as a direct OEM-compatible replacement for the CAT 120M, 12M, 140M, 14M, and 160M motor graders. These models share the same pump mounting and hydraulic system architecture. Contact us with your motor grader serial number to confirm exact compatibility.

Q: What hydraulic functions does this pump support on a motor grader?
A: As the main hydraulic pump, it supplies flow to the blade lift and tilt circuits, circle drive, articulation (steering), and ripper functions. Precision grading requires consistent hydraulic flow — a failing pump causes the blade to drift, hesitate, or lose position accuracy, directly affecting grade quality and rework rates. The 120M/12M/140M/14M/160M series are widely used in road maintenance, where grade accuracy is critical for road safety and performance.

Q: Should I flush the hydraulic system when replacing this pump on a motor grader?
A: Always. Flushing is essential — motor graders often operate in dusty, high-contamination environments (road construction, land leveling). Metal particles and contaminants from the old pump, combined with environmental contamination, can destroy the new pump within hours. Drain and replace all hydraulic oil, flush the system thoroughly, replace all filters, and refill with fresh Cat HYDO Advanced hydraulic oil.

Q: What type of hydraulic oil is recommended for the 120M, 12M, 140M, 14M, and 160M motor graders?
A: Caterpillar specifies Cat HYDO Advanced 10W or 30W depending on ambient operating temperature. Motor graders in road construction and land leveling applications operate under sustained hydraulic load — using non-CAT approved hydraulic fluids can cause pump wear, loss of grade control accuracy, and void the warranty.

Q: How do I confirm this is the correct pump for my motor grader?
A: Check the part number on your current hydraulic pump — if it reads 2508337 or 250-8337, this is the correct replacement. If the label is worn or missing, provide your motor grader serial number and we will verify compatibility before you order.

Q: Does this pump come with mounting hardware or gaskets included?
A: The pump is supplied as a complete unit. Depending on your motor grader configuration, you may need separate mounting bolts, gaskets, or O-rings. Contact us with your serial number and we will confirm exactly what is included and what additional parts you may need for installation.

Q: What is the warranty on this hydraulic piston pump?
A: This piston pump comes with a 12-month warranty covering manufacturing defects. The warranty does not cover damage caused by contaminated hydraulic oil, improper installation, failure to flush the hydraulic system, or using non-CAT approved hydraulic fluids.

Looking for this hydraulic pump? Contact us today for pricing, availability, and lead time information.

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