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          ACDelco 251-2018 - Engine Water Pump Gasket

          MPN: 251-2018
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $1.02
          Out of stock

          Product Overview

          The ACDelco 251-2018 Engine Water Pump Gasket is designed to ensure a perfect seal for your vehicle's water pump, preventing leaks and maintaining optimal engine temperature. With OE-level quality and reliability, this gasket guarantees a precise fit for a variety of vehicle makes, including Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn. Trust in ACDelco's reputation for excellence in automotive parts and ensure your vehicle operates smoothly. Choose ACDelco 251-2018 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This ACDelco 251-2018 is equivalent to or replaces the following part numbers: 2512018.

          Vehicle Compatibility

          • Buick Century (1987-1988) 2.8 V6
          • Buick Regal (1988-1989) 2.8 V6
          • Buick Regal (1989-1996) 3.1 V6
          • Buick Skylark (1994-1998) 3.1 V6
          • Chevrolet Beretta (1987-1989) 2.8 V6
          • Chevrolet Cavalier (1990-1994) 3.1 V6
          • Chevrolet Lumina (1990-2001) 3.1 V6
          • Pontiac Grand Prix (1989-2003) 3.1 V6
          • Oldsmobile Cutlass Supreme (1989-1997) 3.1 V6
          • Saturn Relay (2005-2006) 3.5 V6

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

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          Frequently Asked Questions

          What is the purpose of the ACDelco 251-2018 Engine Water Pump Gasket?

          The ACDelco 251-2018 Engine Water Pump Gasket ensures a proper seal between the water pump and the engine block, preventing coolant leaks and maintaining engine performance.

          How do I know if I need to replace my water pump gasket?

          If you notice coolant leaks or overheating issues, it may be time to replace your water pump gasket with the ACDelco 251-2018 for reliable performance.

          Are there any specific DTCs associated with water pump gasket failure?

          Common Diagnostic Trouble Codes (DTCs) related to water pump gasket failure include P0128 and P0217, indicating issues with engine temperature and coolant flow.

          How can I ensure proper installation of the ACDelco 251-2018?

          For optimal results, follow the manufacturer's installation instructions and ensure all surfaces are clean and free of debris before fitting the ACDelco 251-2018 Engine Water Pump Gasket.

          Why should I choose the ACDelco 251-2018?

          The ACDelco 251-2018 is engineered to meet or exceed OEM specifications, providing a factory-correct replacement that restores safety and performance. Order ACDelco 251-2018 today for a factory-correct replacement that restores safety and performance.

            • Newparts SKU
              1742198
            • Weight
              0.1 lbs
            • Dimensions (L x W x H)
              5.8 x 6.8 x 6.4 in
            • Manufacturer Part #
              251-2018
          • Brand
            ACDelco
          • Manufacturer
            ACDelco
          • MPN
            251-2018
          • Features
            Thickness : .020
          • Cross Reference Numbers
            2512018
          • Part Type
            Engine Water Pump Gasket
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2004ChevroletMalibuLS (3.5 V6 GAS)VIN: 8
          2004ChevroletMalibuLT (3.5 V6 GAS)VIN: 8
          2004ChevroletMalibuMaxx (3.5 V6 GAS)VIN: 8
          2004ChevroletMalibuMaxx LS (3.5 V6 GAS)VIN: 8
          2004ChevroletMalibuMaxx LT (3.5 V6 GAS)VIN: 8
          2005ChevroletMalibuLS (3.5 V6 GAS)VIN: 8
          2005ChevroletMalibuLT (3.5 V6 GAS)VIN: 8
          2005ChevroletMalibuMaxx LS (3.5 V6 GAS)VIN: 8
          2005ChevroletMalibuMaxx LT (3.5 V6 GAS)VIN: 8
          2005PontiacG6Base (3.5 V6 GAS)
          2005PontiacG6GT (3.5 V6 GAS)
          2006PontiacG6Base (3.5 V6 GAS)VIN: 8
          2006PontiacG6GT (3.5 V6 GAS)VIN: 8
          2006ChevroletMalibuLS (3.5 V6 GAS)VIN: 8
          2006ChevroletMalibuLT (3.5 V6 GAS)VIN: 8
          2006ChevroletMalibuLTZ (3.5 V6 GAS)VIN: 8
          2006ChevroletMalibuMaxx LS (3.5 V6 GAS)VIN: 8
          2006ChevroletMalibuMaxx LT (3.5 V6 GAS)VIN: 8
          2006ChevroletMalibuMaxx LTZ (3.5 V6 GAS)VIN: 8
          2006BuickRendezvousCX (3.5 V6 GAS)VIN: L
          2006BuickRendezvousCXL (3.5 V6 GAS)VIN: L
          1994BuickCenturyCustom (3.1 V6 GAS)Engine: L82, VIN: M
          1994BuickCenturySpecial (3.1 V6 GAS)Engine: L82, VIN: M
          1994OldsmobileCutlass CieraS (3.1 V6 GAS)Engine: L82, VIN: M
          1994OldsmobileCutlass CieraSL (3.1 V6 GAS)Engine: L82, VIN: M
          1988BuickCenturyCustom (2.8 V6 GAS)VIN: W
          1988BuickCenturyEstate Wagon (2.8 V6 GAS)VIN: W
          1988BuickCenturyLimited (2.8 V6 GAS)VIN: W
          1988ChevroletBerettaBase (2.8 V6 GAS)VIN: W
          1988ChevroletCelebrityBase (2.8 V6 GAS)VIN: W
          1988ChevroletCelebrityEurosport (2.8 V6 GAS)VIN: W
          1988ChevroletCorsicaBase (2.8 V6 GAS)VIN: W
          1988ChevroletCorsicaLT (2.8 V6 GAS)VIN: W
          1988Pontiac6000Base (2.8 V6 GAS)VIN: W
          1988Pontiac6000LE (2.8 V6 GAS)VIN: W
          1988Pontiac6000SE (2.8 V6 GAS)VIN: W
          1988Pontiac6000STE (2.8 V6 GAS)VIN: W
          1988Pontiac6000STE (3.1 V6 GAS)Engine: LHO, VIN: T
          1988OldsmobileCutlass SupremeBase (2.8 V6 GAS)VIN: W
          1988OldsmobileCutlass SupremeIndy 500 Pace Car (2.8 V6 GAS)VIN: W
          1988OldsmobileCutlass SupremeInternational (2.8 V6 GAS)VIN: W
          1988OldsmobileCutlass SupremeSL (2.8 V6 GAS)VIN: W
          1987BuickCenturyCustom (2.8 V6 GAS)VIN: W
          1987BuickCenturyEstate Wagon (2.8 V6 GAS)VIN: W
          1987BuickCenturyLimited (2.8 V6 GAS)VIN: W
          1987ChevroletBerettaBase (2.8 V6 GAS)VIN: W
          1987ChevroletCorsicaBase (2.8 V6 GAS)VIN: W
          1987ChevroletCorsicaLT (2.8 V6 GAS)VIN: W
          1987ChevroletCelebrityBase (2.8 V6 GAS)VIN: W
          1987ChevroletCelebrityEstate (2.8 V6 GAS)VIN: W
          1987ChevroletCelebrityEurosport (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CieraBrougham (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CieraGT (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CieraLS (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CieraS (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CieraSL (2.8 V6 GAS)VIN: W
          1987OldsmobileFirenzaGT (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CruiserBrougham (2.8 V6 GAS)VIN: W
          1987OldsmobileCutlass CruiserLS (2.8 V6 GAS)VIN: W
          1987Pontiac6000Base (2.8 V6 GAS)VIN: W
          1987Pontiac6000LE (2.8 V6 GAS)VIN: W
          1987Pontiac6000SE (2.8 V6 GAS)VIN: W
          1987Pontiac6000STE (2.8 V6 GAS)VIN: W
          1995BuickCenturyCustom (3.1 V6 GAS)Engine: L82, VIN: M
          1995BuickCenturySpecial (3.1 V6 GAS)Engine: L82, VIN: M
          1995OldsmobileCutlass CieraBase (3.1 V6 GAS)Engine: L82, VIN: M
          1996BuickCenturyCustom (3.1 V6 GAS)Engine: L82, VIN: M
          1996BuickCenturyLimited (3.1 V6 GAS)Engine: L82, VIN: M
          1996BuickCenturySpecial (3.1 V6 GAS)Engine: L82, VIN: M
          1996OldsmobileCutlass CieraBase (3.1 V6 GAS)Engine: L82, VIN: M
          1989ChevroletBerettaBase (2.8 V6 GAS)VIN: W
          1989ChevroletBerettaGT (2.8 V6 GAS)VIN: W
          1989ChevroletCorsicaBase (2.8 V6 GAS)VIN: W
          1989ChevroletCorsicaLTZ (2.8 V6 GAS)VIN: W
          1989Pontiac6000LE (2.8 V6 GAS)VIN: W
          1989Pontiac6000Special Edition (2.8 V6 GAS)VIN: W
          1989OldsmobileCutlass CieraBase (2.8 V6 GAS)VIN: W
          1989OldsmobileCutlass CieraSL (2.8 V6 GAS)VIN: W
          1989OldsmobileCutlass CruiserBase (2.8 V6 GAS)VIN: W
          1989OldsmobileCutlass CruiserSL (2.8 V6 GAS)VIN: W
          1990ChevroletCavalierBase (3.1 V6 GAS)Engine: LHO, VIN: T
          1990ChevroletCavalierRS (3.1 V6 GAS)Engine: LHO, VIN: T
          1990ChevroletCavalierZ24 (3.1 V6 GAS)Engine: LHO, VIN: T
          1991ChevroletCavalierRS (3.1 V6 GAS)Engine: LHO, VIN: T
          1991ChevroletCavalierZ24 (3.1 V6 GAS)Engine: LHO, VIN: T
          1991PontiacSunbirdGT (3.1 V6 GAS)Engine: LHO, VIN: T
          1991PontiacSunbirdLE (3.1 V6 GAS)Engine: LHO, VIN: T
          1991PontiacSunbirdSE (3.1 V6 GAS)Engine: LHO, VIN: T
          1991Pontiac6000LE (3.1 V6 GAS)Engine: LHO, VIN: T
          1991Pontiac6000Special Edition (3.1 V6 GAS)Engine: LHO, VIN: T
          2000BuickCenturyCustom (3.1 V6 GAS)
          2000BuickCenturyLimited (3.1 V6 GAS)
          2008ChevroletEquinoxLS (3.4 V6 GAS)Engine: LNJ, VIN: F
          2008ChevroletEquinoxLT (3.4 V6 GAS)Engine: LNJ, VIN: F
          2008ChevroletEquinoxLTZ (3.4 V6 GAS)Engine: LNJ, VIN: F
          2008PontiacTorrentBase (3.4 V6 GAS)Engine: LNJ, VIN: F
          2009ChevroletEquinoxLS (3.4 V6 GAS)Engine: LNJ, VIN: F
          2009ChevroletEquinoxLT (3.4 V6 GAS)Engine: LNJ, VIN: F
          2009ChevroletEquinoxLTZ (3.4 V6 GAS)Engine: LNJ, VIN: F
          2009PontiacTorrentBase (3.4 V6 GAS)Engine: LNJ, VIN: F
          There are more vehicles this part is compatible with. Check if it fits your vehicle.
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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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