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Kia 4270039050 Inhibitor Switch

2000-2014 Kia

Customer Questions & Expert Answers (2)
4270039050 Kia Inhibitor Switch Product Photo 1 of 4
4270039050 Kia Inhibitor Switch Product Photo 1 of 4
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4270039050 Kia Inhibitor Switch Illustration 1 of 1
  • Part Description
    Switch-Inhibitor
  • Part Code
    45956B
  • Replaced By
    4270039055
  • Manufacturer
    Kia
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$63.22 MSRP: $86.37
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  • Related Parts
  • Specifications
  • Fitment
  • Q&A

  • 4270039050 Inhibitor Switch is Part Code 45956B in the diagram below

    2002 Kia Optima Inhibitor Switch Diagram for 4270039050
    The diagram listed above is for your reference. View diagram for your vehicle

    Related Parts

  • Product Specifications

    BrandGenuine Kia
    Part Code45956B
    Manufacturer Part Number4270039050
    Part DescriptionSwitch-Inhibitor
    Item Dimensions8.2 x 6.2 x 3.6 inches
    Item Weight0.70 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    ManufacturerKia
    SKU4270039050
    WarrantyThis genuine Kia part is guaranteed by Kia's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65

  • Vehicle Fitment

    Year Make Model Trim & Engine Important vehicle option details
    2004-2009 Kia AmantiLow Grade, Middle Grade|3.5L, 3.8L, 3.8L - Lambda4 Door Sedan, Sedan - 4Door 5P
    2000-2010 Kia OptimaHigh Grade, Middle Grade|2.4L, 2.4L - Theta 2, 2.4L - Theta FF, 2.5L, 2.7L, 2.7L - MU4 Door Sedan, Sedan - 4Door 5P
    2006-2011 Kia RondoHigh Grade, Middle Grade|2.4L, 2.7L, 2.7L - MU5 Door Wagon, 5 Door Wagon 7, Wagon - 5Door 5P, Wagon - 5Door 7P
    2001-2014 Kia SedonaHigh Grade, Low Grade, Middle Grade|3.5L, 3.8L, 3.8L - LambdaWagon Long - 7P, Wagon Long 7, Wagon Short - 7P, Wagon Short 7
    2003-2006 Kia SpectraHigh Grade, Middle Grade|2.0L4 Door Sedan, 5 Door Sedan
    2005-2006 Kia SportageHigh Grade, Middle Grade|2.0L, 2.7L5 Door Wagon

  • Customer Questions & Expert Answers

    Q:
    I want to confirm that this is the proper part for this VIN number before I order.
    A:
    You can Select Your Vehicle to check if 4270039050 fits your vehicle.
    Posted and answered by Kia Parts Specialist Paul
    Q:
    How to remove and install the Neutral Safety Switch on the transaxle of a Kia Optima? Posted by Yoemi L.
    A:
    The TR sensor is on the transaxle top. Disconnect the negative battery terminal and remove the air filter housing. Disconnect the TR sensor's electrical connector and remove the shift control cable nut. Remove the control shaft lever and the TR sensor. To install, slide the TR sensor onto the manual valve shaft and loosely install the bolts. Install the lever and tighten the nut. Turn the lever to Park, then to Neutral. Connect the cable and install the nut. Align the lever and sensor holes, tighten the screws. Follow the removal steps in reverse to complete. Check the transmission and indicator operation.
    You can Select Your Vehicle to see complete installation and repair tips.
    Answered by Kia Parts Specialist Nate / Apr 10, 2026

Genuine Kia Part 4270039050, the Right Choice

For assured reliability, buy Kia part # 4270039050 Inhibitor Switch. Also known as Automatic Transmission Shift Position Sensor Switch, Back Up Light Switch, Neutral Safety Switch. They are produced at the official Kia factory to ensure durability and precise fit. These components undergo rigorous quality control tests to remove any defects. This will fit 2000-2010 Optima, 2004-2009 Amanti, 2005-2006 Sportage, 2006-2011 Rondo.

KiaPartsNow.com is a major distributor of genuine Kia parts and accessories including 4270039050 Inhibitor Switch. Our site supplies OEM parts you can trust. We stock a wide range of genuine OEM parts available at reasonable prices. Besides, we have simple returns and swift delivery to ensure a seamless shopping experience.

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