Rainier Parts Oxygen O2 Sensor For Hyosung GT250R Polaris RZR 570 XP 1000 Turbo OE 4016021 For ATV UTV Enthusiasts

Rainier Parts presents the Oxygen O2 Sensor, a precise, direct-fit replacement designed for off-road machines including Hyosung GT250R motorcycles and Polaris RZR models (570, XP 1000, XP 4 1000 Turbo). This sensor helps restore accurate oxygen readings and reliable engine management for consistent performance.

• OE Part Numbers / Cross Reference: Replaces or matches key references to ensure proper fit, including 4016021 and 4013979. This alignment helps your vehicle read emissions data correctly for optimal engine control.
• Compatible Applications: Specifically suitable for Polaris RZR 570, RZR XP 1000, RZR XP 4 1000 Turbo, and related models that use the same sensor family. This multi-model compatibility supports a wide range of off-road setups.
• Hyosung GT250R Reference: Also associated with Hyosung GT250R applications, with compatibility notes linked to the official Hyosung O2 sensor part (37950H99D00). This broadens its use as a versatile replacement across brands.
• Direct-Fit Replacement: Engineered to install like the original sensor, minimizing installation time and ensuring proper electrical connection and sensor response.
• Durable Construction: Built to endure the high-temperature, harsh environment of exhaust systems, delivering reliable readings over time.
• Brand You Can Trust: Rainier Parts brings deep off-road parts experience, focusing on factory-accurate replacements that keep your machine performing at its best.

When the O2 sensor reads accurately, your engine’s control unit can fine-tune air-fuel delivery for efficient combustion, smoother throttle response, and healthier emissions system. Installing a proper sensor helps maintain fuel economy, reduces the likelihood of drivability issues, and supports the longevity of your exhaust and catalytic converter. This makes it a practical, long-term maintenance choice for riders who rely on dependable performance on trails and in the field.