• Please check fitment notes & description for accurate information.
  •  
  • Please check pictures for more detail
  • Please check the part number on your old part housing before purchase.
  • Only part number is the unique ID.
  • If you are not sure whether or not a part in our store will fit your vehicle, please feel free to contact us prior to placing your order so our experienced parts team can verify the proper compatibility to better assist you.
  •  
  • Oxygen Sensor's Location:
  •  
  •  
  •  
  • How do I know the O2 sensor is good or not?
  •  
    • Check engine light on
    • A reduction in fuel economy.
  • Flarestar

    4x O2 Oxygen Sensor1 & Sensor2 For 1997-2004 Mitsubishi Montero Sport 3.0L

    Please check fitment notes & description for accurate information.

     

    Please check pictures for more detail

    Please check the part number on your old part housing before purchase.

    Only part number is the unique ID.

    If you are not sure whether or not a part in our store will fit your vehicle, please feel free to contact us prior to placing your order so our experienced parts team can verify the proper compatibility to better assist you.

     

    Oxygen Sensor's Location:

     

     

     

    How do I know the O2 sensor is good or not?

     

    • Check engine light on

    • A reduction in fuel economy.

    • Your catalytic converter fails unexpectedly

    • Exhaust emissions reach undesirable levels.

    How to install the oxygen sensor?

    Step 1 - Some sensors are equipped with a heat shield that must be removed before the sensor removal, this is performed by removing any mounting bolts.

     

    Step 2 - By using a regular socket it minimizes potential damage to the sensor body and the threads, this technique helps avoid stripping the old sensor upon removal.

     

    Step 3 - Then, locate and disconnect the wiring connector, this step should be done before removing the sensor if the wiring is still attached.

     

    Step 4 - Its important that the wiring harness connectors are exactly the same, each sensor is unique to it's position and is located in the system by its connector configuration. (Note: some replacement sensors have a universal electrical connector that must be configured to the wiring of the old sensor.)

     

    Step 5 - Use a small wire brush to help clean the threaded port to ensure a proper seal of the new sensor. Gently install the new oxygen sensor by hand while keeping the wiring and connector free from bends.

     

    Step 6 - Gently tighten the sensor while keeping wiring free from damage, these sensors need to be fairly snug to avoid leakage.

     

    Step 7 - Once the sensor is tightened, reinstall any heat shields or bracing that had to be removed.

     

    Step 8 - After the heat shield has been reinstalled, mount the connector to it's holder and reattach the connector back onto the wiring harness. If the car has diagnostic trouble codes, they will need to be cleared.

     

       

       

       

       

     

    Must Know Before Buying:

     

    The following information is for instructional and guidance reference only. We try and make them as accurate as we can.

     

    If Check Engine Light is on or an OBDII Trouble/Fault code occurs after installation, check the sensor with a voltmeter as below. 
    If the sensor is good, further diagnosis is required. There're many different codes for specific functional failures, which are NOT necessarily relevant to the sensor. Find out what the Code means before leaving any feedbacks.

     

    Items that have been installed, altered or contaminated are non-returnable.

     

    1. ONLY a defective sensor after tested by a voltmeter is applied to manufacturer warranty.


    2. 20% restocking fee is required if buyer bought wrong items due to not paying attention to fitment information and ask for return.

     

    The Price, Quality & Functionality of the O2 Sensor is fully covered under our warranty & return policy. However, refund for any labor cost, expense in a dealer shop or damage due to wrong installation is NOT covered.


    Item Specifics
    Type Oxygen Sensor (Not Air Fuel Ratio Sensor)
    Brand Silscvtt
    Manufacturer Part Number FS363850SR
    Fitment Type Direct Replacement
    Location Upstream and Downstream, Sensor 1 & Sensor 2
    Cross Reference Part Number 234-4633, 13801, SG1225, 234-4657
    Warranty 1 Year
    Placement on Vehicle Upper
    Universal Fitment No
    Vintage Part No
    Performance Part No
    Wire Quantity 4
    Connector Color Black
    Sensor Type Oxygen Sensor

    Shipping
    SHIPPING CARRIERS: (At Our Discretion) USPS First-Class, USPS Priority, Fedex Ground
    Payment

    We accept different payment method: PayPal, afterpay, VISA, Google pay, mastercard, AMEX, apple pay, DISCOVER.

    Please make payment via "ebay" checkout button in order to prevent delay in your shipment.

    All payment must be made within 5 days after auction ends, otherwise, our system will mark the item unpaid. Please contact us as soon as possible if having any problem.

    Store Policy
    All buyers must go through eBay checkout system to checkout and pay for the item.
     
      In order for Advanced Tuning to offer our customers the lowest prices on thousands of items, all auction sales are considered final unless "defective". Please inspect your order upon receipt. No returns will be accepted for any reason after 30 days of delivery.
     
      Domestic shipping rates include service within the Continental USA, where USPS /Fedex ground shipment is available. Our International shipping rates include AK, HI, GU, VI, PR, APO/FPO and Canada. Larger items (Such as spoilers/Body kits) may incur additional S/H fees if delivered outside of the continental U.S.-Please confirm before bidding/purchasing.
     
      Most of our products are direct from distributor and are intended for jobber purpose, so they may not come with instruction manual. Professional mechanic are recommended for installation. This can avoid many problems that can often be found with an inexperienced installer of aftermarket products. Warranty will be void for improper installation.
     
      Defective products need to be reported and returned within 5 days for replacement. No returned will be accepted after that. Customers are responsible to pay for their shipping to us.
     
      We reserve the right to cancel bids from any bidder with a history of negative feedback/Non-payment.
     
      All items must be paid within 10 days, or an eBay non-paying bidder alert will be filed.
     
      After we receive your payment, we will process and ship out your order within 72 business hours except weekend or Holiday.
     
      Buyer will received our Payment Received Notification email within 72 hours after we got the payment (except weekend and holiday).
     
      If you do not receive our emails, (USPS and our email may be blocked if customer's email account has filter) or want to check your order status, you can contact seller.
     
      Shipments are made Mon through Fri excluding all Holidays.
     
      Negative feedbacks won't help, if you have any question regarding to the item, total amount, payment options & warranty, please review the item page or email us, and please do include the item number which you referring to.
    Warranty
    All Sales are final, NO return unless it's defect. All defect item must be reported and return within 30 days after receiving the product.Seller are responsible for the shipping fees to return or exchange product.
     
    Most of our products are direct from distributor and are intended for jobber purpose, so they may not come with instruction manual. Professional mechanic are recommended for installation. This can avoid many problems that can often be found with an inexperienced installer of aftermarket products. Warranty will be void for improper installation.
    Contact Us
    If you have any questions both before buying or after you have purchased the item, please do not hesitate to contact our customer service support team. We will only reply email through EBay. Do not send email directly from your email account we are unable to respond to them unless picture or other special help is requested. 
     
      Our office hours are Sun 04:00pm to Fri 07:00pm PST ; please message us by ebay message. We are Closed on  Saturday and major Holiday . Your questions will be replied promptly on the next business day. All emails are to be answered within 24 hours except Sunday.

    Flarestar

    4x O2 Oxygen Sensor1 & Sensor2 For 1997-2004 Mitsubishi Montero Sport 3.0L
    Item Specifics
    Type :Oxygen Sensor (Not Air Fuel Ratio Sensor)
    Brand :Silscvtt
    Manufacturer Part Number :FS363850SR
    Fitment Type :Direct Replacement
    Location :Upstream and Downstream, Sensor 1 & Sensor 2
    Cross Reference Part Number :234-4633, 13801, SG1225, 234-4657
    Warranty :1 Year
    Placement on Vehicle :Upper
    Universal Fitment :No
    Vintage Part :No
    Performance Part :No
    Wire Quantity :4
    Connector Color :Black
    Sensor Type :Oxygen Sensor


    SHIPPING CARRIERS: (At Our Discretion) USPS First-Class, USPS Priority, Fedex Ground

    We accept different payment method: PayPal, afterpay, VISA, Google pay, mastercard, AMEX, apple pay, DISCOVER.

    Please make payment via "ebay" checkout button in order to prevent delay in your shipment.

    All payment must be made within 5 days after auction ends, otherwise, our system will mark the item unpaid. Please contact us as soon as possible if having any problem.

    All buyers must go through eBay checkout system to checkout and pay for the item.
     
      In order for Advanced Tuning to offer our customers the lowest prices on thousands of items, all auction sales are considered final unless "defective". Please inspect your order upon receipt. No returns will be accepted for any reason after 30 days of delivery.
     
      Domestic shipping rates include service within the Continental USA, where USPS /Fedex ground shipment is available. Our International shipping rates include AK, HI, GU, VI, PR, APO/FPO and Canada. Larger items (Such as spoilers/Body kits) may incur additional S/H fees if delivered outside of the continental U.S.-Please confirm before bidding/purchasing.
     
      Most of our products are direct from distributor and are intended for jobber purpose, so they may not come with instruction manual. Professional mechanic are recommended for installation. This can avoid many problems that can often be found with an inexperienced installer of aftermarket products. Warranty will be void for improper installation.
     
      Defective products need to be reported and returned within 5 days for replacement. No returned will be accepted after that. Customers are responsible to pay for their shipping to us.
     
      We reserve the right to cancel bids from any bidder with a history of negative feedback/Non-payment.
     
      All items must be paid within 10 days, or an eBay non-paying bidder alert will be filed.
     
      After we receive your payment, we will process and ship out your order within 72 business hours except weekend or Holiday.
     
      Buyer will received our Payment Received Notification email within 72 hours after we got the payment (except weekend and holiday).
     
      If you do not receive our emails, (USPS and our email may be blocked if customer's email account has filter) or want to check your order status, you can contact seller.
     
      Shipments are made Mon through Fri excluding all Holidays.
     
      Negative feedbacks won't help, if you have any question regarding to the item, total amount, payment options & warranty, please review the item page or email us, and please do include the item number which you referring to.
    All Sales are final, NO return unless it's defect. All defect item must be reported and return within 30 days after receiving the product.Seller are responsible for the shipping fees to return or exchange product.
     
    Most of our products are direct from distributor and are intended for jobber purpose, so they may not come with instruction manual. Professional mechanic are recommended for installation. This can avoid many problems that can often be found with an inexperienced installer of aftermarket products. Warranty will be void for improper installation.
    If you have any questions both before buying or after you have purchased the item, please do not hesitate to contact our customer service support team. We will only reply email through EBay. Do not send email directly from your email account we are unable to respond to them unless picture or other special help is requested. 
     
      Our office hours are Sun 04:00pm to Fri 07:00pm PST ; please message us by ebay message. We are Closed on  Saturday and major Holiday . Your questions will be replied promptly on the next business day. All emails are to be answered within 24 hours except Sunday.

    All rights reserved.


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    On Sep 5, 2025 at 19:31:44 PDT, seller added the following information:

    Datacaciques