Restore Full Hydraulic Power — OEM-Spec Gear Transmission Pump for Caterpillar Backhoe Loaders

A failing transmission pump on a Cat backhoe loader means sluggish steering, weak loader response, and a machine that can’t do its job. This direct-fit gear transmission hydraulic pump (6Y3864) is engineered to factory pressure and flow specifications — restoring full drivetrain hydraulic performance to your Cat 416, 426, or 438 series without modification or guesswork.

✅ Direct-Fit Compatibility

• Caterpillar Backhoe Loaders: 416, 416B, 426, 426B, 438, 438B
• Bolt-on replacement — integrates seamlessly into existing hydraulic systems
• No modifications required

🔧 Built to Perform Under Pressure

• Factory pressure & flow specs — maintains the precise hydraulic output required for responsive loader arms, steering, and drivetrain operation
• 100% new aftermarket — not rebuilt or remanufactured; starts with a full service life
• Robust gear design — minimizes internal wear for extended service intervals in heavy-duty applications
• Drop-in fitment — engineered to OEM dimensions for a hassle-free installation
• No dealer markup — OEM-equivalent quality at aftermarket pricing

📦 What's Included

• 1 × Gear Transmission Hydraulic Pump (6Y3864)

🔑 Key Specs

• Part Number: 6Y3864
• Type: Gear Transmission Pump
• Condition: 100% New Aftermarket
• Fitment: Caterpillar 416 / 416B / 426 / 426B / 438 / 438B backhoe loaders

Don’t let a worn pump keep your Cat off the job. Order today — in stock and ready to ship.