POLARIS 1203989 Cylinder Head

( Part Type: Cylinder Head ), ( Mounting Style: Bolt-on ), ( Machine Type: Utv / Sxs ), ( Manufacturer Part Number: 1203989 ), ( Compatible Model: 900 Rzr ), ( Material: Aluminum ), ( Vintage Part: No ), ( Manufacturer Warranty: 1 Year ), ( Country Of Origin: United States )

Review POLARIS Cylinder Head fits RZR 900 2011

The Polaris 1203989 900 RZR Cylinder Head is a high-performance component designed for the Polaris RZR 900 side-by-side vehicle. This cylinder head is engineered to deliver improved power and torque for an exhilarating riding experience.

The 900 RZR Cylinder Head features a compact design with a large intake port and increased valve size for enhanced airflow and better combustion efficiency. The head is also equipped with a high-performance intake and exhaust port design that allows for optimal fuel and air mixture for increased horsepower.

The cylinder head is constructed from a durable aluminum alloy material that is lightweight yet strong. It also includes precision-machined ports and valves for optimal engine performance and longevity. The head gasket is made of a high-temperature material to ensure a tight seal and prevent coolant leaks.

The Polaris 1203989 900 RZR Cylinder Head is designed to work seamlessly with the factory engine management system for easy installation. It also includes all necessary hardware for a straightforward installation process.

This cylinder head is ideal for off-road enthusiasts who demand maximum power and performance from their Polaris RZR 900 side-by-side vehicle. With its compact design, large intake port, increased valve size, and high-performance intake and exhaust port design, the 1203989 cylinder head delivers impressive power gains and improved engine response for an unforgettable riding experience.

Buying a new Polaris 1203989 900 RZR cylinder head is an investment that can provide several benefits, but it also comes with some potential drawbacks. Here are some pros and cons to consider before making a purchase.

1. Improved Performance: A new cylinder head can lead to improved engine performance, including increased horsepower and torque. This can result in better acceleration and top speed.

2. Longer Engine Life: A new cylinder head can help extend the life of the engine by reducing the wear and tear on the old head. This can save you money in the long run by reducing the need for frequent engine repairs or replacements.

3. Better Fuel Efficiency: A new cylinder head can help improve the engine's fuel efficiency, which can save you money on fuel costs over time.

4. Enhanced Durability: A new cylinder head is designed to be more durable than an old one, which can help reduce the risk of engine damage from overheating or other stresses.

1. Cost: The cost of a new cylinder head can be significant, especially for high-performance models like the Polaris 900 RZR. This may be a barrier for some buyers.

2. Installation Complexity: Installing a new cylinder head can be a complex and time-consuming process, especially for those without mechanical experience. This may require the assistance of a professional mechanic or shop, which can add to the overall cost.

3. Potential for Compatibility Issues: Ensure that the new cylinder head is compatible with your specific Polaris 900 RZR model and engine configuration. Failure to do so could result in engine damage or other issues.

In conclusion, buying a new Polaris 1203989 900 RZR cylinder head can offer several benefits, including improved performance, longer engine life, better fuel efficiency, and enhanced durability. However, the cost and installation complexity may be a barrier for some buyers. If you're looking to get the most out of your Polaris 900 RZR and are willing to invest in a high-quality replacement cylinder head, it could be a worthwhile investment. Just be sure to do your research, ensure compatibility, and consider the potential costs before making a purchase.

Based on the information provided, I would recommend purchasing a new Polaris 1203989 900 RZR cylinder head if you are looking for significant performance improvements, extended engine life, and better fuel efficiency. However, I would advise that you carefully consider the cost and installation complexity before making a decision. Additionally, make sure that the cylinder head is compatible with your specific Polaris 900 RZR model and engine configuration before purchasing.

part # 1203989 prices

• $460.00-$859.95

specifications atvsienna:

• for models: Rzr, 900
• for makes: Polaris
• for years: 2011
• part type: Cylinder Head
• mounting style: Bolt-on
• machine type: Utv / Sxs
• manufacturer part number: 1203989
• compatible model: 900 Rzr
• material: Aluminum
• vintage part: No
• manufacturer warranty: 1 Year
• country of origin: United States

returns atvsienna:

• policy: No Returns

offer atvsienna:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1
• started: October 25, 2025
• best offers: True

payments atvsienna:

• wallet: Apple-pay
• money order
• other
• credit card: Diners-club

shipping atvsienna:

• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• cost: $59.54
• type: Calculated
• transit: 5-11 Days

seller atvsienna:

• # reviews: 1238
• rating: 98.9%

general atvsienna:

• ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts
• condition: Used

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