Looking for the best Polaris ACE 900 gearcase parts? Discover top-quality OEM replacements and durable aftermarket options designed for easy installation, perfect fit, and trusted performance to keep your ride adventure-ready.
Polaris ACE 900 owners know the thrill of hitting the trails. Keeping your ride in top shape is key to enjoying every adventure. Gearcase parts play a vital role in your vehicle’s performance.
We’ve gathered the best Polaris ACE 900 gearcase parts to keep your machine running smoothly. From OEM replacements to durable aftermarket options, we’ve got you covered. These parts ensure reliable performance and longevity for your ACE 900.
Whether you’re tackling tough terrain or cruising casually, these parts deliver. Easy installation, perfect fit, and trusted quality make them stand out. Let’s dive into the top picks for your Polaris ACE 900.
List of Top 10 Polaris ACE 900 Gearcase Parts
| Image | Title | Best For | Price |
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Main Gearcase Bellcrank For Polaris RZR 570 ACE 900 2012-2022 3235397 3235386 |
This product is perfect for Polaris RZR 570 and ACE 900 owners needing a reliable replacement part. It fits models from 2012-2022, including EPS, Trail, S, and Premium editions. |
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Polaris OEM Main Gearcase Bellcrank for 2012-2019 ACE RZR 570 900 LE EFI EPS 3235397 3235386 |
This Polaris OEM Main Gearcase Bellcrank is perfect for owners of 2012-2019 Polaris RZR 570 or 2016-2019 Polaris ACE 900 who need a reliable replacement part. It’s an OEM product, ensuring a perfect fit and lasting performance. |
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REPLACEMENTKITS.COM Brand Gearcase Seal Fits Polaris RZR Sportsman Ace General 570 900 1000 Replaces 3235658 |
This gearcase seal is perfect for Polaris owners who need a reliable replacement. It fits RZR, Sportsman, Ace, and General models with 570, 900, or 1000 engines. |
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Polaris OEM Inner Clutch Cover Assembly for 2015-2019 RZR & RZR 4 900 1000 ACE 900 2634863 |
This OEM Polaris Inner Clutch Cover (Part #2634863) is perfect for owners of 2015-2019 RZR 900, 2015-2018 RZR 4 900, 2016-2019 ACE 900, and 2019 RZR S4 1000/XP 1000 models needing genuine, reliable parts. It ensures exact fit and function for hassle-free upgrades or repairs. |
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REPLACEMENTKITS.COM Brand Main Gearcase Transmission Triple Lip Oil Seal Fits Polaris Sportsman Scrambler 550 850 RZR RGR ACE General 570 900 1000 Replaces 3235052 |
This replacement kit is perfect for Polaris owners who need a reliable, high-quality seal for their Sportsman, Scrambler, RZR, or General. It’s easy to check if it fits your model and comes with a 100% satisfaction guarantee. |
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JAVIK Main Gearcase Bellcrank For Polaris RZR 570 ACE 900 2012-2022 O.E.M# 3235397 3235386 |
This product is perfect for Polaris RZR 570 and ACE 900 owners needing a direct replacement for their gearcase bellcrank. It’s ideal for those who want a durable, easy-to-install part that matches O.E.M. specs and ensures reliable performance. |
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Gearcase Park Low Shift Dog For Polaris Ranger General Sportsman ACE RZR Turbo PRO XD 500 570 900 1000 2014-2025 3235457 |
This Gearcase Park Low Shift Dog is perfect for Polaris owners who need a reliable replacement part. It fits many Polaris models, ensuring smooth shifting and long-lasting performance. |
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MISHON Full Service Engine Oil Change Kit for Polaris RZR 900 S 4 General 1000 |
This MISHON Full Service Engine Oil Change Kit is perfect for Polaris owners who want to keep their vehicles running smoothly. It’s easy to use and meets warranty requirements, making it ideal for DIY maintenance. |
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Replacement Front Differential Gearcase Big Pinion Bearing for Polaris ACE 900 2016-2019, Replaces Mod-C88-72686 3235174 |
This product is perfect for Polaris ACE 900 owners with 2016–2019 models needing a reliable replacement for their front differential gearcase big pinion bearing. It fits Mod-C88-72686 and 3235174 part numbers, with 28mm specs for precise performance. |
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Powersports Replacement Parts for Front Differential Gearcase Big Pinion Bearing for Polaris ACE 900 2016-2019 Mod-C33C-72686 |
This product is perfect for DIY riders and powersports enthusiasts needing reliable front differential gearcase parts. It suits Polaris ACE 900 owners looking for easy, 15-minute installation without mechanic help. Built for tough trails and long-term durability, it’s ideal for routine maintenance or performance upgrades. |
Detailed Reviews
Finding the perfect gearcase parts for your Polaris ACE 900 is simple with our expert-vetted list of top-rated upgrades. From durable bellcranks to precision seals, each part is tested for compatibility, performance, and long-term reliability. Whether you need a direct OEM replacement or a budget-friendly aftermarket fix, our guide ensures your ride stays smooth and dependable.
1. Main Gearcase Bellcrank For Polaris RZR 570 ACE 900 2012-2022 3235397 3235386

This Main Gearcase Bellcrank fits Polaris RZR and ACE models. It matches OE/OEM Numbers 3235397 and 3235386. The package includes one bellcrank for easy installation.
It works with RZR 570 from 2012-2022 and ACE 900 from 2016-2019. Check your model’s details and OEM numbers to confirm compatibility before buying.
Pre-purchase advice: Confirm your model matches the list provided. Dedicated support is available if you need help with questions or concerns.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for Polaris RZR 570 and ACE 900 owners needing a reliable replacement part. It fits models from 2012-2022, including EPS, Trail, S, and Premium editions.
Ready to Purchase?
2. Polaris OEM Main Gearcase Bellcrank for 2012-2019 ACE RZR 570 900 LE EFI EPS 3235397 3235386

This OEM Polaris part (3235386) replaces 3235397. It fits 2016-2019 ACE 900 and 2012-2019 RZR 570 models.
Built to Polaris specs for a perfect fit. Works with EFI EPS systems for smooth use. A reliable replacement for gearcase bellcrank needs.
| Pros | Cons |
|---|---|
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Perfect For:
This Polaris OEM Main Gearcase Bellcrank is perfect for owners of 2012-2019 Polaris RZR 570 or 2016-2019 Polaris ACE 900 who need a reliable replacement part. It’s an OEM product, ensuring a perfect fit and lasting performance.
Ready to Purchase?
3. REPLACEMENTKITS.COM Brand Gearcase Seal Fits Polaris RZR Sportsman Ace General 570 900 1000 Replaces 3235658

REPLACEMENTKITS.COM offers a brand gearcase seal that fits many Polaris models. It works with RZR, Sportsman, Ace, General 570, 900, and 1000. This part replaces 3235658.
The product comes from an American-owned company known for high-quality aftermarket parts. It includes a 100% satisfaction guarantee.
| Pros | Cons |
|---|---|
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Perfect For:
This gearcase seal is perfect for Polaris owners who need a reliable replacement. It fits RZR, Sportsman, Ace, and General models with 570, 900, or 1000 engines.
Ready to Purchase?
4. Polaris OEM Inner Clutch Cover Assembly for 2015-2019 RZR & RZR 4 900 1000 ACE 900 2634863

The Polaris OEM Inner Clutch Cover Assembly is a genuine part designed for specific Polaris models. It fits 2015-2019 RZR and ACE vehicles, ensuring a perfect match. This part is reliable and built to last.
It works with RZR 4 900, RZR 900, ACE 900, and RZR S4 1000 models. The part number is 2634863, making it easy to identify.
| Pros | Cons |
|---|---|
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Perfect For:
This OEM Polaris Inner Clutch Cover (Part #2634863) is perfect for owners of 2015-2019 RZR 900, 2015-2018 RZR 4 900, 2016-2019 ACE 900, and 2019 RZR S4 1000/XP 1000 models needing genuine, reliable parts. It ensures exact fit and function for hassle-free upgrades or repairs.
Ready to Purchase?
5. REPLACEMENTKITS.COM Brand Main Gearcase Transmission Triple Lip Oil Seal Fits Polaris Sportsman Scrambler 550 850 RZR RGR ACE General 570 900 1000 Replaces 3235052

This triple lip oil seal fits Polaris models like Sportsman, RZR, and General. It’s built to last with a Durable DuPont Viton Lip.
The seal replaces part 3235052. It’s made for Polaris 550, 850, 900, and more. The brand is American owned and quality-focused.
100% Satisfaction Guaranteed with this kit. Always check your model and year for fit. This seal keeps your transmission running smooth.
| Pros | Cons |
|---|---|
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Perfect For:
This replacement kit is perfect for Polaris owners who need a reliable, high-quality seal for their Sportsman, Scrambler, RZR, or General. It’s easy to check if it fits your model and comes with a 100% satisfaction guarantee.
Ready to Purchase?
6. JAVIK Main Gearcase Bellcrank For Polaris RZR 570 ACE 900 2012-2022 O.E.M# 3235397 3235386

This JAVIK Main Gearcase Bellcrank fits Polaris RZR 570 models from 2012-2022 and ACE 900 units from 2016-2019. It matches O.E.M. specs for precise compatibility and easy installation. Designed for durability, it resists cracking under normal use.
The part meets factory standards and installs without extra tools or tweaks. It works for multiple trims like RZR 570 EPS, Trail, and Premium editions. A reliable replacement for worn or damaged OEM parts.
Your package includes one bellcrank. 12-month warranty covers defects. Contact support for help with fitment or missing parts.
| Pros | Cons |
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Perfect For:
This product is perfect for Polaris RZR 570 and ACE 900 owners needing a direct replacement for their gearcase bellcrank. It’s ideal for those who want a durable, easy-to-install part that matches O.E.M. specs and ensures reliable performance.
Ready to Purchase?
7. Gearcase Park Low Shift Dog For Polaris Ranger General Sportsman ACE RZR Turbo PRO XD 500 570 900 1000 2014-2025 3235457

Gearcase Park Low Shift Dog is a must-have part for many Polaris vehicles. It fits a wide range of models, from Ranger to RZR and Sportsman ACE. This part ensures smooth shifting and reliable performance.
It works with Polaris PRO XD and General models too. The part number is 3235457, making it easy to identify. Each package includes one shift dog, ready for quick installation.
We offer 24-hour customer service and a 1-year product warranty. If you have questions, feel free to contact us anytime.
| Pros | Cons |
|---|---|
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Perfect For:
This Gearcase Park Low Shift Dog is perfect for Polaris owners who need a reliable replacement part. It fits many Polaris models, ensuring smooth shifting and long-lasting performance.
Ready to Purchase?
8. MISHON Full Service Engine Oil Change Kit for Polaris RZR 900 S 4 General 1000

This MISHON Full Service Engine Oil Change Kit fits Polaris RZR and General models. It meets Polaris warranty rules and works with many 2015-2025 models. The kit includes all fluids and filters needed for a full service.
The kit has full-synthetic front drive fluid and gearcase lubricant for smooth performance. These fluids resist heat and cold, lasting longer in tough conditions.
It adds high-viscosity oil for engines and a fresh air filter to boost efficiency. The funnels make pouring easy and clean.
| Pros | Cons |
|---|---|
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Perfect For:
This MISHON Full Service Engine Oil Change Kit is perfect for Polaris owners who want to keep their vehicles running smoothly. It’s easy to use and meets warranty requirements, making it ideal for DIY maintenance.
Ready to Purchase?
9. Replacement Front Differential Gearcase Big Pinion Bearing for Polaris ACE 900 2016-2019, Replaces Mod-C88-72686 3235174

This replacement front differential gearcase big pinion bearing fits Polaris ACE 900 models from 2016 to 2019. It matches the original design for a secure fit and reliable performance.
The bearing measures 28mm with specs 72.4mm and 30.4mm. Part numbers Mod-C88-72686 and 3235174 are listed for easy verification. Always check your model, year, and images before ordering.
Built to last, this part ensures smooth operation in your vehicle’s differential system. Its vehicle-specific design guarantees an easy fit and long-term durability.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for Polaris ACE 900 owners with 2016–2019 models needing a reliable replacement for their front differential gearcase big pinion bearing. It fits Mod-C88-72686 and 3235174 part numbers, with 28mm specs for precise performance.
Ready to Purchase?
10. Powersports Replacement Parts for Front Differential Gearcase Big Pinion Bearing for Polaris ACE 900 2016-2019 Mod-C33C-72686

This Powersports Replacement Part is a DIRECT FIT for your Polaris ACE 900 (2016–2019). It’s precision-machined to match OEM specs, ensuring flawless performance and reliability.
Built with high-grade materials, this part resists wear and handles extreme conditions. Install it in 15 minutes—no modifications or mechanic fees, just a simple DIY fix.
Backed by 10 years of expertise. Ideal for upgrades or routine service. Restores power and responsiveness.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for DIY riders and powersports enthusiasts needing reliable front differential gearcase parts. It suits Polaris ACE 900 owners looking for easy, 15-minute installation without mechanic help. Built for tough trails and long-term durability, it’s ideal for routine maintenance or performance upgrades.
Ready to Purchase?
Buying Guide
Polaris ACE 900 owners love hitting the trails. Keeping your ride in top shape is key to enjoying every adventure.
Choosing the best gearcase parts for your Polaris ACE 900 ensures reliable performance and longevity. Here’s what to consider when buying:
- Compatibility: Always check if the part fits your ACE 900 model and year. Look for OEM numbers or vehicle-specific designs to avoid mismatches.
- Quality: Opt for durable materials like DuPont Viton or high-grade metals. These ensure long-lasting performance in tough conditions.
- Type of Part: Decide between OEM replacements and aftermarket options. OEM parts offer a perfect fit, while aftermarket parts may provide cost-effective solutions.
- Ease of Installation: Choose parts with simple DIY installation. Look for pre-assembled kits or parts that require no extra tools.
- Warranty and Support: Select parts with a warranty and dedicated customer support. This ensures help if issues arise.
- Brand Reputation: Buy from trusted brands known for quality and reliability. Check reviews and satisfaction guarantees.
- Price: Compare prices to find the best value. Balance cost with quality and durability for a smart investment.
With these factors in mind, you’ll find the perfect gearcase parts to keep your Polaris ACE 900 running smoothly. Happy trails!