Polaris Ranger 500 ProStar Engine (2017-2022)

Description

2017–2022 Polaris Ranger 500 Engine Rebuild by REV6

When your Polaris Ranger 500 ProStar engine needs more than an individual component replacement, REV6 evaluates the internal assembly before rebuilding begins. Our technicians inspect the crankshaft, cylinder, piston, cylinder head, bearings, and engine cases to determine the work required.

This rebuild combines refurbished OEM components with new replacement parts where specified. REV6 rebuilds the crankshaft to manufacturer specifications and addresses cylinder wear according to the condition of your engine core.

What Goes Into Your Ranger 500 ProStar Engine Rebuild?

Each engine is disassembled, cleaned, and inspected before repair work begins. The following list outlines the components and procedures customers can expect from REV6.

Cylinder Head and Valve Train

• Cylinder head inspected, cleaned, sandblasted, decked, rebuilt, and shimmed to manufacturer specifications
• Cylinder head quality inspection
• Valve guides inspected and replaced as needed
• Valves and valve seats recut or refaced
• Valve sealing verified through vacuum testing
• Camshaft lobes and journals cleaned and polished, with replacement as needed

Crankshaft, Bearings and Cylinder

• Crankshaft rebuilt, inspected, and verified within OEM specifications
• All bearings inspected and cleaned
• Cylinder inspected for wear and damage
• Worn cylinder replaced with a refurbished, hone-finished Nikasil-coated cylinder
• New piston and piston rings installed

Timing Components, Oil Pump and Engine Cases

• Timing chain inspected for stretch and wear, replaced as needed
• Oil chain inspected for stretch and wear, replaced as needed
• Refurbished oil pump assembly
• Engine cases inspected and machined as required
• Engine cases checked for journal wear, cracks, holes, and excessive wear
• All gaskets and seals replaced
• Engine assembled and torqued to manufacturer specifications

Rebuild Note: These components and procedures represent what customers can expect from a REV6 engine rebuild. Depending on the engine and core condition, REV6 may reuse refurbished OEM components or install replacement parts. Actual repairs and replacements may vary.

Rebuilt Crankshaft and Cylinder Inspection

REV6 rebuilds the Ranger 500 ProStar crankshaft, inspects it, and verifies that it meets OEM specifications. The engine’s bearings are also inspected and cleaned during the rebuild process.

Cylinder condition determines whether replacement is necessary. When a cylinder is worn, REV6 uses a refurbished, hone-finished Nikasil-coated cylinder along with a new piston and rings.

Cylinder Head Rebuilding and Valve Sealing

The cylinder head receives cleaning, inspection, decking, and rebuilding work. REV6 also checks the valve guides and replaces them when necessary.

Valves and seats are recut or refaced, then vacuum tested to verify sealing. Camshaft components are inspected and polished, with replacement based on their condition.

REV6 Engine Inspection and Quality Control

REV6 technicians inspect the internal components before completing the rebuild. Engine cases are checked for damage and journal wear, while the final assembly is torqued to manufacturer specifications.

Our team brings more than 60 years of combined powersports industry experience to engine rebuilding and inspection.

Polaris Ranger 500 Engine Core Requirements

This rebuild requires an engine core. You can send your original Ranger 500 ProStar engine to REV6 or select the refundable $800 core charge option.

REV6 evaluates returned cores to determine refund eligibility. A qualifying core may receive a full refund under the applicable core return requirements.

If you need a rebuilt engine before returning your original, ask about available REV6 core exchange options.

Preparing Your Ranger 500 Engine Core

Before sending your engine, review the REV6 engine shipping instructions for packaging and preparation requirements.

If you have questions about core condition or exchange eligibility, contact our team before shipment.

Ranger 500 ProStar Engine Warranty

Your rebuilt Polaris Ranger 500 ProStar engine includes a standard 1-year no-fault warranty. An optional 2-year no-fault warranty upgrade is also available.

Review the REV6 Warranty Policy for coverage details and requirements.

Polaris Ranger 500 ProStar Fitment

This engine rebuild is intended for:

• 2017–2022 Polaris Ranger 500 ProStar

Confirm your exact model year and engine configuration before purchasing.

Need Polaris Ranger Engine Parts Instead?

If you plan to rebuild your engine yourself, REV6 also offers Polaris Ranger engine parts and rebuild kits.

Browse the Polaris Ranger parts and rebuild kit catalog to explore available options.

You can also review the REV6 engine rebuild kit guide to compare different kit types.

Engine Break-In and Support

Before starting your rebuilt Ranger 500 engine, review the REV6 engine break-in procedure for initial startup and operating instructions.

For questions about your rebuild, shipping, or warranty coverage, visit the REV6 Help Center or contact our team.

Send us your Ranger 500 ProStar engine core to get your rebuild moving.