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Best Arctic Cat Gear Oils

OEM synthetic gear oils from Arctic Cat for reverse gearcases and chaincases. Designed for superior protection in extreme cold and high-performance snowmobile applications.

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Arctic Cat OEM Synthetic Chain Lube Gear Oil 15oz 6639-539 - Protects Snowmobile Chains in Extreme Temps

Arctic Cat OEM full synthetic chain lube (part 6639-539) is designed for chain-driven snowmobiles with reverse. Its formula protects against extreme temperature wear, inhibits rust during storage, and minimizes chain stretch to extend machine life—perfect for Arctic Cat snowmobile owners.

  • Shields chains and gears from wear in brutal cold and heat
  • Prevents rust and corrosion for worry-free off-season storage
  • Reduces chain stretch and sprocket wear to prolong snowmobile life
  • OEM formula ensures perfect compatibility with Arctic Cat models
  • Synthetic base delivers superior protection at extreme temperatures

Exceptional wear protection in extreme conditions. Extends chain, sprocket, and gear longevity. Rust inhibition ideal for storage.

Not compatible with ACT Diamond Drive models. Limited to chain-driven snowmobiles with reverse. Single 15oz size may require multiple bottles for heavy use.

Arctic Cat OEM ACT Reverse Gearcase Fluid Synthetic Oil 15oz - Part 5639-219 for Snowmobiles

This is genuine OEM Arctic Cat ACT Gearcase Fluid in a 15oz bottle, specially formulated with low shear properties for superior lubrication at low temperatures in reverse gearcases. Arctic Cat snowmobile owners of compatible Bearcat, CrossFire, Lynx, and M series models should buy it for optimal ACT drive system protection.

  • Genuine OEM formula ensures perfect fit and peak performance for ACT drive systems
  • Low shear design delivers reliable lubrication even in extreme cold conditions
  • Synthetic blend protects gears from wear during low-temp startups
  • Precisely sized 15oz bottle matches exact service needs for reverse gearcases
  • Extends gearcase lifespan with specialized Arctic Cat engineering

OEM quality guarantees compatibility with listed Arctic Cat models. Superior low-temperature performance prevents cold-start damage. High customer satisfaction from proven reliability in snowmobile use.

Limited to specific Arctic Cat snowmobile models only. Smaller bottle size may require multiples for extensive servicing.

Welcome to our Arctic Cat Gear Oils category, where you'll find premium OEM synthetic lubricants specifically engineered for Arctic Cat snowmobiles and ATVs. These 15oz bottles of high-performance fluids ensure smooth operation, reduced wear, and optimal protection in the harshest winter environments, helping enthusiasts maintain their machines with confidence.

Why Arctic Cat Gear Oils Stand Out

Arctic Cat has built a stellar reputation for rugged, reliable powersports vehicles, and their gear oils reflect that legacy of excellence. As an OEM brand, these products are formulated by the engineers who design the machines themselves, guaranteeing compatibility and peak performance. Unlike generic alternatives, Arctic Cat gear oils use advanced synthetic bases that resist breakdown in sub-zero temperatures, prevent corrosion, and minimize friction for quieter, more efficient gear operation.

Whether you're prepping for deep powder runs or routine trail maintenance, investing in these fluids means less downtime and longer component life. They're a staple for serious riders who demand factory-spec quality without compromise.

Key Features to Consider

When shopping for gear oils in this category, prioritize synthetic formulations for superior thermal stability and shear resistance. Look for products with extreme pressure additives that shield gears during high-load scenarios, like aggressive acceleration or towing. Viscosity ratings are crucial—thinner fluids for quick cold starts, thicker for heavy-duty protection.

  • Synthetic Base: Excels in low temperatures down to -40°F, preventing gelling.
  • OEM Compatibility: Direct fit for Arctic Cat chaincases and reverse gearcases.
  • Anti-Wear Tech: Reduces metal-to-metal contact, extending service intervals.
  • Water Resistance: Seals out moisture from wet snow and slush.

These features make Arctic Cat oils ideal for snowmobile enthusiasts facing brutal winter conditions.

Product Comparison: Reverse Gearcase vs. Chaincase Lubricant

Our selection features two specialized options tailored to distinct needs. The Reverse Gearcase ACT ACER Fluid Synthetic Oil is optimized for the reverse gearcase system, providing precise lubrication that handles the unique stresses of reverse engagement and forward shifts. Its formula ensures seamless gear changes and protects planetary gears from shock loads.

In contrast, the Chaincase Lubricant SYNTHETIC Chain Lube Gear Oil (part 6639-539) targets chain and sprocket assemblies. This thicker blend clings to moving parts, reducing chain stretch and sprocket wear while quieting operation. Both are 15oz bottles, perfect for single-service fills, but choose based on your service point: ACT ACER for gearcases, chain lube for drivetrains.

To broaden your options, explore our parent Gear Oils category or compare with trusted alternatives like Valvoline Gear Oils and Lucas Oil Gear Oils.

Buying Guide: What to Look For

Select gear oils based on your Arctic Cat model and riding style. For trail riders, prioritize cold-flow properties; for mountain warriors, seek high-film strength. Always check your owner's manual for capacity and interval recommendations—typically annual changes or every 1000 miles.

Common use cases include pre-season servicing, post-storage prep, and mid-season maintenance after water crossings. Pair with Oils & Fluids from our broader automotive lineup for complete protection. If you're new to powersports lubes, starting with these OEM synthetics simplifies choices and boosts reliability.

Frequently Asked Questions

What's the difference between Arctic Cat reverse gearcase fluid and chaincase lubricant?

The reverse gearcase fluid is tailored for planetary and shift gears, offering precise viscosity for smooth reversals. Chaincase lubricant is designed for chains and sprockets, with tackifiers for better adhesion and noise reduction.

Are Arctic Cat gear oils compatible with other brands' snowmobiles?

While primarily OEM for Arctic Cat, their synthetic specs work well in similar Polaris or Ski-Doo applications. For best results, stick to factory fluids to maintain warranty coverage.

How does Arctic Cat compare to competitors like Royal Purple?

Arctic Cat excels in model-specific engineering and cold-weather performance. Brands like Royal Purple Gear Oils offer universal high-performance, but OEM ensures perfect fit—check our Royal Purple section for side-by-side options.

What is Arctic Cat's warranty on their gear oils?

As OEM consumables, gear oils carry a satisfaction guarantee tied to vehicle warranties. Proper use preserves your machine's full coverage; contact Arctic Cat support for specifics.

Which product should I choose for my Arctic Cat snowmobile?

Inspect your service manual: use ACT ACER for reverse gearcases (most models) and chain lube for driveline chaincases. Both provide top-tier protection—stock up via our Oils category.

Ready to gear up? Browse these essentials and keep your Arctic Cat running strong all season.