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          Hitachi HPP0021 - Direct Injection High Pressure Fuel Pump (Left)

          MPN: HPP0021
          The Hitachi HPP0021 Direct Injection High Pressure Fuel Pump enhances fuel delivery for optimal engine performance. Designed for easy installation and reliable operation.
          0.0
          Vehicle Specific
          Check if this part fits your vehicle.
          • $437.95
          In stock

          Product Overview

          The Hitachi Direct Injection High Pressure Fuel Pump, part number HPP0021, is engineered to meet OEM standards, ensuring reliable performance and fitment for a variety of Audi and Volkswagen models. This fuel pump is designed to provide high-pressure fuel injection, which enhances engine performance and improves fuel efficiency. It guarantees smooth acceleration and dependable starting, even in challenging weather conditions. Choose Hitachi HPP0021 for dependable performance and peace of mind every time you service your vehicle.

          Cross Reference Numbers

          This Hitachi HPP0021 is equivalent to or replaces the following part numbers: 079 127 025 AF, 079 127 025C.

          Vehicle Compatibility

          • Audi A6 Quattro 4.2 V8 (2007–2009)
          • Audi A8 Quattro 4.2 V8 (2007–2009)
          • Audi Q7 4.2 V8 (2007–2009)
          • Audi RS4 4.2 V8 (2007–2008)
          • Audi S5 4.2 V8 (2007–2009)
          • Volkswagen Touareg 4.2 V8 (2007–2009)

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

          Why Shop at eEuroparts.com?

          • Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
          • Exclusive Kits That Fit™ - complete repair solutions with no guesswork
          • Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
          • Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
          • Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
          • Established Trust: Serving the European auto community since 2000.

          Frequently Asked Questions

          What does the Hitachi HPP0021 Direct Injection High Pressure Fuel Pump do?

          The Hitachi Direct Injection High Pressure Fuel Pump is responsible for supplying high-pressure fuel to the engine, ensuring optimal fuel delivery for efficient combustion. This function is crucial for maintaining engine performance and fuel efficiency.

          How do I know if my fuel pump needs replacement?

          Common symptoms indicating that the fuel pump may need replacement include difficulty starting the engine, reduced engine performance, inconsistent acceleration, and unusual engine noises. If you experience any of these issues, it may be time to consider a replacement.

          Can I install the Hitachi HPP0021 myself?

          Yes, the Hitachi HPP0021 can be installed by DIY enthusiasts, but proper precautions should be taken. Ensure you have the right tools and follow installation instructions closely to avoid any potential issues.

          What are the symptoms of a faulty fuel pump?

          Symptoms of a faulty fuel pump may include difficulty starting the engine, stalling, poor acceleration, and reduced fuel efficiency. If you experience these issues, it may indicate a failing fuel pump.

          Why should I choose Hitachi for my fuel pump needs?

          Hitachi is known for its quality and reliability in automotive parts. Order Hitachi HPP0021 today for a factory-correct replacement that restores safety and performance.

          Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.

            • eEuroparts SKU
              2543
            • Weight
              2.15 lbs
            • Dimensions (L x W x H)
              4.7 x 5.875 x 5.6 in
            • Barcode
              840151001194
            • Manufacturer Part #
              HPP0021
          • Brand
            Hitachi
          • Manufacturer
            Hitachi
          • MPN
            HPP0021
          • Part Type
            Direct Injection High Pressure Fuel Pump
          • Position
            Left
          • OE Part Numbers
            079 127 025C, 079127025C, 079 127 025 AF, 079127025AF
          • Cross Reference Numbers
            HM10040
          • Features
            California Proposition 65 Image : prop65_cancer.jpg
            California Proposition 65 Required : Y
            California Proposition 65 Text : WARNING Cancer. ADVERTENCIA Cáncer. AVERTISSEMENT Cancer. www.P65Warnings.ca.gov
            Gasket Or Seal Included : No
            Gasket Or Seal Included : No
            In Tank or External : External
            Pump Type : Mechanical
            Terminal Gender : Male
          • Fitment
            • Fitment Type
              Vehicle Specific
          YearMakeModelSubmodelNotes
          2007AudiQ7Premium (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2007AudiQ7Base (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2007AudiRS4Base (4.2 V8 GAS)Engine: BNS, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2007AudiA6 QuattroBase (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2007AudiA8 QuattroL (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2007AudiA8 QuattroBase (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2007VolkswagenTouaregBase (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008VolkswagenTouaregBase (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiA6 QuattroBase (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiA8 QuattroL (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: To 03/11/2008, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiA8 QuattroBase (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: To 03/11/2008, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiQ7Premium (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiRS4Cabriolet (4.2 V8 GAS)Engine: BNS, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiRS4Base (4.2 V8 GAS)Engine: BNS, Valves: 32, Notes: Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2008AudiS5Base (4.2 V8 GAS)Engine: CAUA, Valves: 32, Notes: To 03/11/2008, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2009AudiA8 QuattroL (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: To 11/03/2008, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2009AudiA8 QuattroBase (4.2 V8 GAS)Engine: BVJ, Valves: 32, Notes: To 11/03/2008, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2009AudiQ7Premium (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: To Chassis # 4L-9-029 260, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2009AudiS5Base (4.2 V8 GAS)Engine: CAUA, Valves: 32, Notes: To 03/11/2008, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
          2009VolkswagenTouaregBase (4.2 V8 GAS)Engine: BAR, Valves: 32, Notes: To VIN # 7L-9-030 000, Grade: Actual OE, Description: EXTERNAL HIGH-PRESSURE PUMP, Availability: Available to Order, In Tank or External: External
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          Warranty Overview

          At eEuroparts, 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, contact customer support via Chat or Contact Us.

          • 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 complete details, please see our full 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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