POLARIS 3070563 Pro Xd Bearing Cover 4000D

( Manufacturer Part Number: 3070563 ), ( Part Type: Bearing Cover Case )

Review POLARIS Pro Xd Bearing Case Cover fits CREW 2021

The **Polaris 3070563 21 Pro XD 4000D Crew Bearing Cover** is a precision-engineered, high-performance component designed exclusively for the Polaris 3070563 21 Pro XD 4000D ATV, ensuring optimal durability, reliability, and performance in demanding off-road conditions. Crafted from high-grade, heat-treated steel, this bearing cover is built to withstand the rigors of heavy-duty use, including rough terrain, aggressive riding styles, and prolonged exposure to harsh environmental elements. The cover features a robust, seamless design that not only enhances structural integrity but also minimizes the risk of wear or deformation over time. Its precise fitment is engineered to align perfectly with the ATV s drivetrain, providing a secure and snug seal that prevents debris, dirt, and moisture from infiltrating critical mechanical components. This meticulous attention to detail contributes to extended bearing life and reduced maintenance requirements, allowing riders to focus on the thrill of the trail rather than the hassle of frequent upkeep. Whether tackling steep climbs, deep mud, or rocky descents, this bearing cover delivers the strength and resilience needed to keep the 4000D s drivetrain operating at peak efficiency. Ideal for both professional riders and enthusiasts who demand nothing less than top-tier performance, this part exemplifies Polaris commitment to innovation and engineering excellence in off-road vehicle components.

### **Pros and Cons of buying a Polaris 3070563 21" Pro-XD 4000D Crew Bearing Cover**

1. **Durability and Performance** The 4000D series is known for its robust construction, featuring a reinforced frame and high-quality components designed to handle heavy loads and rough terrain. The Pro-XD suspension system enhances stability and comfort, making it suitable for both off-road and light trail riding.

2. **Versatility** The 21-inch wheel size strikes a balance between maneuverability and stability, making it a good choice for riders who need a versatile ATV for work, recreation, or mixed-use scenarios. The crew cab configuration provides additional seating capacity, which is useful for hauling passengers or equipment.

3. **Reliability** Polaris is a well-established brand with a strong reputation for building dependable ATVs. The 4000D series, in particular, is known for its longevity and ease of maintenance, which can translate to lower long-term costs if properly cared for.

4. **Aftermarket Support** As a popular model, the 3070563 has a wide range of aftermarket parts, accessories, and upgrades available. This makes it easier to customize the ATV to fit specific needs, whether for utility work, racing, or off-road adventures.

5. **Resale Value** Polaris ATVs generally hold their value better than some competitors, and the 4000D series is no exception. If you plan to sell it later, you may recover a significant portion of your initial investment.

6. **Safety Features** The crew bearing cover is part of the ATV s structural integrity, contributing to safety by protecting critical components from debris and reducing the risk of mechanical failure. The 4000D also includes standard safety features like a roll bar and durable frame design.

7. **Comfort for Long Rides** The ergonomic seating and suspension tuning of the Pro-XD make it more comfortable for extended rides compared to older or less refined models. This is beneficial for riders who use the ATV for work or recreational trips covering long distances.

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1. **Higher Initial Cost** The 4000D series, especially in a crew cab configuration, is more expensive upfront compared to smaller or older ATV models. This can be a barrier for budget-conscious buyers or those looking for a more economical option.

2. **Fuel Efficiency** Like most mid-to-large ATVs, the 4000D is not fuel-efficient. It consumes more gasoline than smaller models, which can add to operating costs, especially for frequent or long-distance use.

3. **Maintenance Requirements** While durable, the 4000D requires regular maintenance, including oil changes, tire rotations, and suspension checks. Neglecting maintenance can lead to costly repairs and reduced lifespan. The crew bearing cover and other components may also require periodic inspection for wear or damage.

4. **Weight and Maneuverability** The 4000D is heavier than smaller ATVs, which can make it less agile in tight or technical terrain. This may limit its use in very rugged or narrow trails where smaller models excel.

5. **Noise and Vibration** Some riders report that the 4000D can be noisier and vibrate more than quieter, more refined models. This is less of an issue for utility work but may be a drawback for those prioritizing comfort or noise levels.

6. **Depreciation Over Time** While Polaris ATVs hold value reasonably well, the 4000D series may still depreciate significantly over 5 7 years, especially if newer models with advanced features are released. This is a consideration if you plan to keep the ATV long-term.

7. **Limited Off-Road Agility** Compared to specialized off-road ATVs (e.g., Polaris Ranger XP 570), the 4000D is more of a utility or trail ATV. It may not perform as well in extreme off-road conditions where lighter, more nimble models are preferred.

8. **Parts Availability** While aftermarket support is strong, some specialized parts (e.g., rare suspension components or unique crew cab accessories) may take longer to source or be more expensive than standard parts.

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The **Polaris 3070563 21" Pro-XD 4000D Crew Bearing Cover** is part of a well-built, versatile ATV designed for utility, recreation, and mixed-use applications. It excels in durability, reliability, and aftermarket support, making it a solid choice for riders who prioritize performance, comfort, and longevity. However, its higher cost, lower fuel efficiency, and heavier weight may not suit everyone, particularly those on a tight budget or needing extreme off-road agility.

If you need a **practical, heavy-duty ATV** for work, hauling, or regular trail riding, the 4000D is an excellent investment. For **budget-conscious buyers, extreme off-road enthusiasts, or those seeking fuel efficiency**, a smaller or more specialized model might be a better fit.

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- You require a **reliable, versatile ATV** for work, utility tasks, or family outings.

- You prioritize **durability, seating capacity, and aftermarket support**.

- You are willing to invest in a **long-term, high-performance machine** that will handle rough conditions well.

- You plan to **customize or upgrade** the ATV over time.

- You need a **lighter, more agile ATV** for extreme off-road use.

- Your budget is limited, and you can find a **used or smaller model** that meets your needs.

- You prioritize **fuel efficiency** and plan to ride frequently over long distances.

- You prefer a **quieter, more refined ride** and are open to other brands with similar features.

For most buyers seeking a **balanced, work-ready ATV**, the Polaris 4000D crew cab is a **strong recommendation**. Just ensure you factor in maintenance costs and operating expenses to justify the initial investment.

Details:

Comes as pictured. Was removed from a 2021 Polaris PRO XD 4000D Crew with 9075.3 miles and 1536.1 hours. Tabs are intact. Finish has light wear.

Cover is in good condition with no cracks. Items are shipped using USPS, UPS, and FedEx.

part #: 3070563 prices

• $49.99-$249.99

specifications atvfendersgo:

• for models: Crew
• for makes: Polaris
• for years: 2021
• mpn: 3070563
• part type: Bearing Cover Case

general atvfendersgo:

• condition: Used
• Body Frame > Body Parts, doors Fenders > Fenders

offer atvfendersgo:

• sold: 0
• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: March 11, 2026
• best offers: True

shipping atvfendersgo:

• type: Calculated
• class: Standard, Expedited, One-day
• transit: 3-8 Days
• cost: $0.00
• carrier: USPS, UPS
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air

seller atvfendersgo:

• rating: 99.8%
• city: Ashaway, Rhode Island
• # reviews: 98810

payments atvfendersgo:

• other
• credit card: Mastercard
• wallet: Google-pay

returns atvfendersgo:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

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