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          AISIN WPT-187 - Engine Water Pump

          MPN: WPT-187
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $103.95
          In stock

          Product Overview

          The AISIN WPT-187 Engine Water Pump is designed to provide optimal coolant circulation, ensuring your engine maintains the perfect operating temperature. Crafted from high-quality materials, this pump guarantees OE-level reliability and fitment for select Lexus models. AISIN is a trusted name in automotive parts, known for their commitment to performance and durability. Choose AISIN WPT-187 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This AISIN WPT-187 is equivalent to or replaces the following part numbers: 16100-39505, 1610039505, 16100-39506, 1610039506, WPT187, 170-3010, 1703010, WP-2248, WP2248, CP6338, 16100-277031, 16100277031, AW6338, NW6338, 42248, 51-2577, 512577.

          Vehicle Compatibility

          • Lexus (2007-2017) LS460 4.6 V8
          • Lexus (2008-2011) GS460 4.6 V8
          • Lexus (2008-2014) IS F 5.0 V8
          • Lexus (2008-2016) LS600h 5.0 V8
          • Lexus (2015-2022) RC F 5.0 V8
          • Lexus (2016-2020) GS F 5.0 V8
          • Lexus (2018-2022) LC500 5.0 V8
          • Lexus (2022) IS500 5.0 V8

          This also fits other applications. Please use the vehicle selector tool to verify fitment.

          Why Choose Newparts.com?

          • Trusted by DIYers and pros for over 15 years
          • Over 20 million auto parts shipped
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          Frequently Asked Questions

          What are the symptoms of a failing engine water pump?

          Common symptoms include engine overheating, coolant leaks, and unusual noises from the engine bay. If your vehicle is experiencing these issues, consider replacing it with the AISIN WPT-187.

          How often should I replace my engine water pump?

          It is recommended to replace the water pump every 60,000 to 100,000 miles, or as specified in your vehicle's maintenance schedule. For a reliable replacement, choose AISIN WPT-187.

          Can a bad water pump trigger a check engine light?

          Yes, a failing water pump can cause overheating, which may trigger diagnostic trouble codes (DTCs) related to engine performance. If you are experiencing issues, it is advisable to check the AISIN WPT-187 for replacement.

          What DTCs are associated with water pump issues?

          Common DTCs related to water pump failures include P0128, P0217, and P0118. If your vehicle shows these codes, consider replacing your water pump with the AISIN WPT-187 for optimal performance.

          Why is it important to install a quality water pump?

          A quality water pump, like the AISIN WPT-187, ensures efficient coolant circulation, which is vital for preventing engine overheating and damage. Order AISIN WPT-187 today for a factory-correct replacement that restores safety and performance.

            • Newparts SKU
              204670
            • Weight
              1.91 lbs
            • Barcode
              4954514912051
            • Dimensions (L x W x H)
              10.8 x 13.6 x 4.8 in
            • Manufacturer Part #
              WPT-187
          • Brand
            AISIN
          • Manufacturer
            AISIN
          • MPN
            WPT-187
          • OE Part Numbers
            16100-39505, 1610039505, 16100-39506, 1610039506
          • Cross Reference Numbers
            WPT187, 170-3010, 1703010, WP-2248, WP2248, WPT-187, CP6338, 16100-277031, 16100277031, AW6338, NW6338, 42248, 51-2577, 512577
          • Part Type
            Engine Water Pump
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2008LexusLS460Base (4.6 V8 GAS)
          2008LexusLS460L (4.6 V8 GAS)
          2008LexusGS460Base (4.6 V8 GAS)
          2008LexusIS FBase (5.0 V8 GAS)
          2008LexusLS600hL (5.0 V8 FHEV)
          2007LexusLS460Base (4.6 V8 GAS)
          2007LexusLS460L (4.6 V8 GAS)
          2009LexusLS460Base (4.6 V8 GAS)
          2009LexusLS460L (4.6 V8 GAS)
          2009LexusLS600hL (5.0 V8 FHEV)
          2009LexusGS460Base (4.6 V8 GAS)
          2009LexusIS FBase (5.0 V8 GAS)
          2010LexusLS600hL (5.0 V8 FHEV)
          2010LexusIS FBase (5.0 V8 GAS)
          2010LexusGS460Base (4.6 V8 GAS)
          2010LexusLS460Base (4.6 V8 GAS)
          2010LexusLS460L (4.6 V8 GAS)
          2011LexusGS460Base (4.6 V8 GAS)
          2011LexusIS FBase (5.0 V8 GAS)
          2011LexusLS460Base (4.6 V8 GAS)
          2011LexusLS460L (4.6 V8 GAS)
          2011LexusLS600hL (5.0 V8 FHEV)
          2012LexusIS FBase (5.0 V8 GAS)
          2012LexusLS460Base (4.6 V8 GAS)
          2012LexusLS460L (4.6 V8 GAS)
          2012LexusLS600hL (5.0 V8 FHEV)
          2013LexusIS FBase (5.0 V8 GAS)
          2013LexusLS460Base (4.6 V8 GAS)
          2013LexusLS460F Sport (4.6 V8 GAS)
          2013LexusLS460L (4.6 V8 GAS)
          2013LexusLS600hL (5.0 V8 FHEV)
          2014LexusLS460Base (4.6 V8 GAS)
          2014LexusLS460F Sport (4.6 V8 GAS)
          2014LexusLS460L (4.6 V8 GAS)
          2014LexusLS600hL (5.0 V8 FHEV)
          2014LexusIS FBase (5.0 V8 GAS)
          2015LexusRC FBase (5.0 V8 GAS)
          2015LexusLS460Base (4.6 V8 GAS)
          2015LexusLS460F Sport (4.6 V8 GAS)
          2015LexusLS460L (4.6 V8 GAS)
          2015LexusLS600hL (5.0 V8 FHEV)
          2016LexusRC FBase (5.0 V8 GAS)
          2016LexusLS460Base (4.6 V8 GAS)
          2016LexusLS460F Sport (4.6 V8 GAS)
          2016LexusLS460L (4.6 V8 GAS)
          2016LexusLS600hL (5.0 V8 FHEV)
          2016LexusGS FBase (5.0 V8 GAS)
          2017LexusRC FBase (5.0 V8 GAS)
          2017LexusGS FBase (5.0 V8 GAS)
          2017LexusLS460Base (4.6 V8 GAS)
          2017LexusLS460F Sport (4.6 V8 GAS)
          2017LexusLS460L (4.6 V8 GAS)
          2018LexusLC500Base (5.0 V8 GAS)
          2018LexusRC FBase (5.0 V8 GAS)
          2018LexusGS FBase (5.0 V8 GAS)
          2019LexusLC500Base (5.0 V8 GAS)
          2019LexusGS FBase (5.0 V8 GAS)
          2019LexusRC FBase (5.0 V8 GAS)
          2020LexusLC500Base (5.0 V8 GAS)
          2020LexusRC FBase (5.0 V8 GAS)
          2020LexusRC FTrack Edition (5.0 V8 GAS)
          2020LexusGS FBase (5.0 V8 GAS)
          2021LexusLC500Base (5.0 V8 GAS)
          2021LexusRC FBase (5.0 V8 GAS)
          2021LexusRC FFuji Speedway Edition (5.0 V8 GAS)
          2022LexusIS500F Sport Performance (5.0 V8 GAS)
          2022LexusIS500F Sport Performance Launch Edition (5.0 V8 GAS)
          2022LexusIS500F Sport Performance Premium (5.0 V8 GAS)
          2022LexusLC500Base (5.0 V8 GAS)
          2022LexusRC FBase (5.0 V8 GAS)
          2022LexusRC FFuji Speedway Edition (5.0 V8 GAS)
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          Warranty Overview

          At Newparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.

          Standard Warranty – Most Parts

          • Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.

          • Protection: Defects in materials or workmanship under normal personal use.

          • Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.

          • Exclusions:

            • Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)

            • Commercial, fleet, rideshare, off-road, or racing use

            • Improper installation, misuse, accidents, or modifications

          • Not Covered: Labor, shipping, towing, or incidental costs.

          Bison Performance Warranty – Our House Brand

          • Coverage: Limited Lifetime Warranty for as long as you own your vehicle.

          • Applies To: All products sold under the Bison Performance label.

          • Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.

          • Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).

          • What’s Included: Replacement of the defective product (labor and shipping excluded).

          Warranty Claim Requirements

          To keep claims fast and fair, we require:

          • Proof of purchase (invoice or order confirmation).

          • Photos or videos showing the defective part, order number, date, VIN, and odometer reading.

          • Diagnostic reports or part returns for non-visible issues may be requested.

          • Claims must be truthful, properly documented, and reflect normal consumer use.

          Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.

          For full details and exclusions, please see our complete Warranty Terms & Conditions.


          This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.

          Return Policy Overview

          Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
          To start a return, use our Return Portal or contact support.

          • Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)

          • Refunds: Issued to your original payment method within 3–5 business days after inspection

          • Exchanges: Not automatic — please return and reorder

          • Replacements: May be approved for incorrect or defective items reported within 7 days

          Not returnable:

          • Used or installed parts

          • Electrical components

          • Opened filter kits, gaskets, or contaminated items

          • Final sale or custom orders

          Important Notes:

          • Return shipping is your responsibility unless we made a verified error

          • Fitment is the customer’s responsibility (we can assist, but do not guarantee)

          • Country of origin may vary and is not grounds for return

          For complete details, please see our full Return Policy.



          This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.

          Fast, Reliable Shipping — Straight to Your Door

          We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.

          • We use trusted carriers like UPS, FedEx, and USPS.

          • Tracking info is emailed to you as soon as your order ships.

          • Delivery estimates at checkout are based on carrier data, but not guaranteed.

          Need help with a shipment?

          If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.

          For full details, please see our complete Shipping Policy.


          This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions,  risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.

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