1999 Mitsubishi Montero 2-Pc Oxygen Sensor Upstream & Downstream 4-Pin A-Premium APOS0387

A-Premium Aftermarket Oxygen Sensor: Multiple Options Available
With A-Premium, you have a variety of expertly engineered Oxygen Sensor options to suit your vehicle's needs. Each replacement is backed by a 3-Year unlimited mileage warranty for peace of mind. Use our Vehicle Selector to explore multiple options and find the perfect fit.

• Installation Position: Upstream & Downstream
• 2-PC A-Premium Oxygen Sensor
• Offers upgraded sensitivity in sensors for accurate measurement.
• Developed to snugly fit your vehicle without the hassle of modifications.
• Constructed with pioneering technology for increased durability.
• Exhaustively tested to guarantee long-term dependability and efficiency.

Proficient Measurement. Through its focus on oxygen amounts in the exhaust, the oxygen sensor assists the engine in reaching optimal combustion conditions, improving fuel efficiency and limiting emissions.
User-Friendly Assembly. A-Premium Oxygen Sensors are engineered for easy installation without alterations or specialized equipment—plug them in seamlessly.