159-7784 O-Ring Seal for Caterpillar Excavators 330D 336D 340D Engines

159-7784 O-Ring Seal – High-Quality Aftermarket Replacement for Caterpillar Equipment

Ensure leak-free performance in your Caterpillar machine’s hydraulic or engine system with this premium aftermarket 159-7784 O-ring seal. Engineered as a direct OEM replacement, it provides reliable sealing under high pressure and temperature, preventing fluid loss and contamination in critical applications.

Key Benefits for Contractors and Operators

• Prevents Costly Leaks: High-grade material creates a tight seal to keep fluids contained and block contaminants, reducing downtime and repair costs.
• Direct Fit Installation: Matches genuine Cat specs for quick, no-modification replacement – easy to install during routine service.
• Built Tough for Heavy Duty Use: Resists heat, pressure, chemicals, and compression set for long-lasting reliability in harsh job site conditions.
• Cost-Effective Alternative: OEM-level sealing at aftermarket pricing – ideal for stocking common repair parts in fleets.
• Fast Shipping: In stock and ready to ship within 1-3 days.

Compatible Caterpillar Models

This O-ring seal is widely used in hydraulic and engine systems across models including (verify your machine’s parts manual for exact fit):

• Excavators: 330D, 336D, 340D series
• Track-Type Tractors: D6T, D7R
• Wheel Loaders: 966H, 972H
• And various engines like C9, C11, C13

Specifications

Questions? Contact us for fitment confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.