Description

Bobcat 3400XL 570cc Engine Rebuild for 2014–2019 Late Models

This rebuild service covers Bobcat 3400XL gas engines (late models ~2014–2019). If your engine has lost power or started showing signs of wear, this process restores performance and strengthens long-term reliability.

Compatible Serial Number Ranges

• B3FN11001–B3FN11999
• B3FN12001–B3FN12999
• B3FN17001 & above
• B3FN18001 & above
• B3FN19001 & above

Engine Features & Rebuild Process

• Standard No-Fault 1-year warranty with an optional 2-year No-Fault Warranty upgrade
• OEM parts restored and reused whenever possible
• All OEM parts inspected and refurbished to guarantee high-quality internals that keep your machine running reliably
• All components cleaned, dismantled, inspected, and repaired as needed

Top End & Cylinder Head Work

• Cylinder head inspected, cleaned, sandblasted, decked, shimmed to manufacturer spec, and put through quality inspection
• Valve guides inspected and replaced as needed
• High-temperature valve stem seals installed
• Valves and valve seats recut and refaced to ensure a tight seal, verified with a vacuum test
• Camshafts, lobes, and journals cleaned and polished, replaced as needed

Bottom End & Rotating Assembly

• Refurbished crankshaft
• New high-babbitt crankshaft and rod bearings
• Fully inspected engine cases tested for cracks, holes, or excessive wear

Cylinder & Internal Components

• Cylinder inspected for damage, bored and honed to the next oversize, or replated
• Pistons replaced with new pistons and rings
• Timing chain inspected for stretch and wear, replaced as needed
• Refurbished oil pump assembly

Final Assembly

• All gaskets and seals replaced
• Engine assembled and torqued to manufacturer specifications

Note: This is a generalized list and may include more or less depending on your engine condition and core.

Quality Control & Inspection

Each engine goes through multiple inspections before leaving the shop. Because every step—from machining to final assembly—is checked, the finished engine delivers consistent performance and dependable operation.

Once your engine passes quality control, it ships back ready for installation. Experienced technicians oversee each stage to maintain build quality across every engine.

Core Options

To receive your REV6 engine, you must send in your old core or pay a refundable $800 core charge.

• Send in Your Core First: Ship your engine to REV6 so inspection and rebuild work can begin.
• $800 Refundable Core Charge: Pay the core charge to receive your rebuilt engine.
• Full Refund: If your returned core meets inspection standards, the full $800 is refunded.
• Core Exchange Option: For qualifying customers, an engine can be shipped first before sending your core.

To confirm your core condition or discuss options, visit the contact page.

Warranty & Support

This rebuild includes a 1-year no-fault warranty. In addition, a 2-year no-fault warranty upgrade is available for added protection.

Review full coverage details in the warranty policy or browse more parts and upgrades in the Powersports Shop.

Take Action

Don’t let a worn engine keep your machine out of service. Rebuild it the right way and get your Bobcat back to running strong. Order today and get the process started.