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AISIN WPF-002 - Engine Water Pump
Product Overview
The AISIN WPF-002 Engine Water Pump is designed to maintain optimal engine temperature by circulating coolant effectively. This high-quality water pump ensures OE-level reliability and fitment, making it a trusted choice for Subaru vehicles. With precision engineering, this part guarantees durability and performance across various models, including the Legacy, Impreza, Forester, Outback, and Baja. Choose AISIN WPF-002 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This AISIN WPF-002 is equivalent to or replaces the following part numbers: 21111-A0007, 21111A0007, 21111-AA006, 21111AA006, 21111-AA000, 21111AA000, 21111-AA005, 21111AA005, 21111-AA002, 21111AA002, 21111-AA007, 21111AA007, 21111-AA003, 21111AA003, 21111-AA004, 21111AA004, 21111-AA001, 21111AA001, 21111-AA110, 21111AA110, WPF002, 160-1120, 1601120, AW9223, WPF-002, 42207, 226035, F-17, F17, 252-235, 252235, WP777, 18763, 9223, 131-2102, 1312102, 5573412, F3-018, F3018.
Vehicle Compatibility
- Subaru Legacy (1990-2005)
- Subaru Impreza (1993-2005)
- Subaru Forester (1998-2005)
- Subaru Outback (2000-2005)
- Subaru Baja (2003-2006)
This also fits other applications. Please use the vehicle selector tool to verify fitment.
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Frequently Asked Questions
What are the symptoms of a failing water pump?
Common symptoms include overheating, coolant leaks, and unusual noises from the engine compartment. If you notice any of these issues, consider replacing your water pump with the AISIN WPF-002.
How often should I replace my engine water pump?
It's recommended to replace your engine water pump every 60,000 to 100,000 miles or as specified by your vehicle's manufacturer. Ensure that you use quality parts like the AISIN WPF-002 for optimal performance.
Can a faulty water pump trigger any diagnostic trouble codes?
Yes, a malfunctioning water pump can lead to DTCs such as P0217 (Engine Over Temperature Condition) or P0480 (Cooling Fan Control Circuit). If you encounter these codes, inspect the AISIN WPF-002 for proper functionality.
What is the warranty on the AISIN WPF-002?
The AISIN WPF-002 typically comes with a manufacturer’s warranty, ensuring that you are covered for any defects or issues. Check with your retailer for specific warranty details.
Where can I purchase the AISIN WPF-002?
You can order the AISIN WPF-002 from our website or through authorized dealers. Order AISIN WPF-002 today for a factory-correct replacement that restores safety and performance.
- BrandAISIN
- ManufacturerAISIN
- MPNWPF-002
- OE Part Numbers21111-A0007, 21111A0007, 21111-AA006, 21111AA006, 21111-AA000, 21111AA000, 21111-AA005, 21111AA005, 21111-AA002, 21111AA002, 21111-AA007, 21111AA007, 21111-AA003, 21111AA003, 21111-AA004, 21111AA004, 21111-AA001, 21111AA001, 21111-AA110, 21111AA110
- Cross Reference NumbersWPF002, 160-1120, 1601120, AW9223, WPF-002, 42207, 226035, F-17, F17, 252-235, 252235, WP777, 18763, 9223, 131-2102, 1312102, 5573412, F3-018, F3018
- Part TypeEngine Water Pump
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2003 | Subaru | Outback | Base (2.5 H4 GAS) | |
| 2003 | Subaru | Outback | Limited (2.5 H4 GAS) | |
| 2003 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 2003 | Subaru | Legacy | L (2.5 H4 GAS) | |
| 2003 | Subaru | Legacy | L SE (2.5 H4 GAS) | |
| 2003 | Subaru | Impreza | Outback (2.5 H4 GAS) | |
| 2003 | Subaru | Impreza | RS (2.5 H4 GAS) | |
| 2003 | Subaru | Impreza | TS (2.5 H4 GAS) | |
| 2002 | Subaru | Outback | Base (2.5 H4 GAS) | |
| 2002 | Subaru | Outback | Limited (2.5 H4 GAS) | |
| 2002 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 2002 | Subaru | Legacy | GT Limited (2.5 H4 GAS) | |
| 2002 | Subaru | Legacy | L (2.5 H4 GAS) | |
| 2002 | Subaru | Impreza | Outback (2.5 H4 GAS) | |
| 2002 | Subaru | Impreza | RS (2.5 H4 GAS) | |
| 2002 | Subaru | Impreza | TS (2.5 H4 GAS) | |
| 2001 | Subaru | Outback | Base (2.5 H4 GAS) | |
| 2001 | Subaru | Outback | Limited (2.5 H4 GAS) | |
| 2001 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 2001 | Subaru | Legacy | GT Limited (2.5 H4 GAS) | |
| 2001 | Subaru | Legacy | L (2.5 H4 GAS) | |
| 2001 | Subaru | Impreza | L (2.2 H4 GAS) | |
| 2001 | Subaru | Impreza | Outback (2.2 H4 GAS) | |
| 2001 | Subaru | Impreza | RS (2.5 H4 GAS) | |
| 1998 | Subaru | Legacy | Brighton (2.2 H4 GAS) | |
| 1998 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 1998 | Subaru | Legacy | GT Limited (2.5 H4 GAS) | |
| 1998 | Subaru | Legacy | L (2.2 H4 GAS) | |
| 1998 | Subaru | Legacy | Outback (2.5 H4 GAS) | |
| 1998 | Subaru | Legacy | Postal (2.2 H4 GAS) | |
| 1997 | Subaru | Legacy | Brighton (2.2 H4 GAS) | |
| 1997 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 1997 | Subaru | Legacy | L (2.2 H4 GAS) | |
| 1997 | Subaru | Legacy | LSi (2.5 H4 GAS) | |
| 1997 | Subaru | Legacy | Outback (2.5 H4 GAS) | |
| 1997 | Subaru | Legacy | Outback Limited (2.5 H4 GAS) | |
| 1997 | Subaru | Legacy | Postal (2.2 H4 GAS) | |
| 1997 | Subaru | Impreza | Brighton (2.2 H4 GAS) | |
| 1997 | Subaru | Impreza | Brighton (1.8 H4 GAS) | |
| 1997 | Subaru | Impreza | L (2.2 H4 GAS) | |
| 1997 | Subaru | Impreza | Outback (2.2 H4 GAS) | |
| 1996 | Subaru | Legacy | Brighton (2.2 H4 GAS) | |
| 1996 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 1996 | Subaru | Legacy | L (2.2 H4 GAS) | |
| 1996 | Subaru | Legacy | LS (2.2 H4 GAS) | |
| 1996 | Subaru | Legacy | LSi (2.5 H4 GAS) | |
| 1996 | Subaru | Legacy | Outback (2.5 H4 GAS) | |
| 1996 | Subaru | Legacy | Outback (2.2 H4 GAS) | |
| 1996 | Subaru | Legacy | Postal (2.2 H4 GAS) | |
| 1996 | Subaru | Impreza | Brighton (1.8 H4 GAS) | |
| 1996 | Subaru | Impreza | L (2.2 H4 GAS) | |
| 1996 | Subaru | Impreza | L (1.8 H4 GAS) | |
| 1996 | Subaru | Impreza | LX (2.2 H4 GAS) | |
| 1996 | Subaru | Impreza | Outback (2.2 H4 GAS) | |
| 1994 | Subaru | Legacy | Alpine Sport (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | GT (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | L (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | LS (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | LSi (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | Outdoor (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | Sport (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | Sun Sport (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1994 | Subaru | Legacy | Touring (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1993 | Subaru | Legacy | L (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1993 | Subaru | Legacy | LS (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1993 | Subaru | Legacy | LSi (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1993 | Subaru | Legacy | Sport (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1992 | Subaru | Legacy | L (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1992 | Subaru | Legacy | LS (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1992 | Subaru | Legacy | LSi (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1992 | Subaru | Legacy | Sport (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1991 | Subaru | Legacy | L (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1991 | Subaru | Legacy | LS (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1991 | Subaru | Legacy | LSi (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1991 | Subaru | Legacy | Sport (2.2 H4 GAS) | Aspiration: Naturally Aspirated |
| 1999 | Subaru | Legacy | Brighton (2.2 H4 GAS) | |
| 1999 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 1999 | Subaru | Legacy | L (2.2 H4 GAS) | |
| 1999 | Subaru | Legacy | L 30th Anniversary (2.2 H4 GAS) | |
| 1999 | Subaru | Legacy | Limited 30th Anniversary (2.5 H4 GAS) | |
| 1999 | Subaru | Legacy | Limited 30th Anniversary (2.2 H4 GAS) | |
| 1999 | Subaru | Legacy | Outback (2.5 H4 GAS) | |
| 1999 | Subaru | Legacy | Outback Limited (2.5 H4 GAS) | |
| 1999 | Subaru | Legacy | SUS 30th Anniversary (2.5 H4 GAS) | |
| 2000 | Subaru | Legacy | Brighton (2.5 H4 GAS) | |
| 2000 | Subaru | Legacy | GT (2.5 H4 GAS) | |
| 2000 | Subaru | Legacy | GT Limited (2.5 H4 GAS) | |
| 2000 | Subaru | Legacy | L (2.5 H4 GAS) | |
| 2000 | Subaru | Impreza | L (2.2 H4 GAS) | |
| 2000 | Subaru | Impreza | Outback (2.2 H4 GAS) | |
| 2000 | Subaru | Impreza | RS (2.5 H4 GAS) | |
| 1995 | Subaru | Legacy | Base (2.2 H4 GAS) | |
| 1995 | Subaru | Legacy | Brighton (2.2 H4 GAS) | |
| 1995 | Subaru | Legacy | L (2.2 H4 GAS) | |
| 1995 | Subaru | Legacy | LS (2.2 H4 GAS) | |
| 1995 | Subaru | Legacy | LSi (2.2 H4 GAS) | |
| 1995 | Subaru | Legacy | Outback (2.2 H4 GAS) | |
| 1995 | Subaru | Legacy | Postal (2.2 H4 GAS) | |
| 1990 | Subaru | Legacy | Base (2.2 H4 GAS) | |
| 1990 | Subaru | Legacy | L (2.2 H4 GAS) |
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.


















