Description

Polaris Ranger 570 Engine Rebuild for 2018–2021 Models

If your Polaris Ranger 570 engine shows low compression, oil consumption, or bottom-end noise, this rebuild service brings it back. Instead of replacing the entire unit, this process restores your original engine and strengthens long-term reliability. As a result, your machine runs smoother and holds up under load.

Before You Buy — Verify Key Components

This rebuild uses a crankshaft that replaces OEM part number 2206356. The tapered end measures 25mm just behind the threaded flywheel section.

The cylinder head may correspond to OEM part numbers 2206221, 3023441, 3022616, 3022521, 1204594, or 1204289. These models use a round crush exhaust gasket.

Because Polaris used variations across these years, confirm both the crankshaft MAG end diameter and exhaust port style before ordering. This step helps prevent fitment issues and ensures correct components for your machine.

Compatible Ranger 570 Models

• 2018 RANGER 570
• 2018 RANGER 570 FULL SIZE
• 2018 RANGER CREW 570
• 2018 RANGER CREW 570 FULL SIZE
• 2019 RANGER 570
• 2019 RANGER 570 FULL SIZE
• 2019 RANGER CREW 570
• 2019 RANGER CREW 570 FULL SIZE
• 2020 RANGER 570
• 2020 RANGER 570 FULL SIZE
• 2020 RANGER CREW 570
• 2020 RANGER CREW 570 FULL SIZE
• 2021 RANGER 570
• 2021 RANGER 570 FULL SIZE
• 2021 RANGER CREW 570
• 2021 RANGER CREW 570 FULL SIZE

What Your Engine Rebuild Includes

• Complete teardown, cleaning, and inspection of all components
• Crankshaft remanufactured with a new connecting rod and trued
• Cylinder inspected, bored, and honed to the next oversize or replaced
• New moly piston and piston rings
• Cylinder head cleaned, decked, rebuilt, and shimmed to manufacturer specifications
• Manganese bronze exhaust valve guide upgrade for improved durability
• Intake valve guides inspected and replaced as needed
• Valves and seats recut and verified with vacuum testing
• Camshaft lobes and journals cleaned and polished, replaced if required
• Timing chain and oil pump chain inspected and replaced as needed
• Refurbished oil pump assembly
• Engine cases inspected for journal wear, cracks, or excessive damage
• All gaskets and seals replaced
• Final assembly torqued to manufacturer specifications

Dual Technician Quality Control

First, a technician completes the rebuild and verifies all measurements and tolerances. Then, a second technician performs a full inspection before shipment. Because every engine passes through two stages of inspection, the final build meets strict quality standards.

Core Options

You can send in your original engine core or choose to pay a refundable $800 core charge.

• Send Your Core First: Ship your engine to begin inspection and rebuild work
• $800 Refundable Core Charge: Pay the core charge to receive your rebuilt engine first
• Full Refund: If your core qualifies after inspection, the full $800 is refunded
• Core Exchange Options: Available for qualifying customers—contact the team to confirm

Engines are scheduled in the order cores are received, so sending your core promptly helps move your build forward.

Lead Time

Most Polaris Ranger 570 engines ship within 5–10 business days after core arrival. However, availability can change, so calling ahead helps confirm current turnaround times.

Shipping Instructions

Before sending your engine, review the core shipping instructions for packaging and freight details.

Warranty Coverage

Every rebuild includes a 1-year no-fault warranty. In addition, you can upgrade to a 2-year no-fault, no-questions-asked warranty for added protection.

For full details, review the warranty policy.

Need Assistance?

If you need help with fitment or availability, visit the help center or reach out through the contact page.

For break-in procedures and engine education, explore the REV6 blog.

Take Action

Send in your core and get your Polaris Ranger 570 engine rebuilt the right way. Order today and get your machine back to running strong.