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Hitachi MAF0022 - Mass Air Flow Sensor
Product Overview
The Hitachi Mass Air Flow Sensor (MAF0022) is a critical component designed to measure the volume of air entering your engine, allowing your vehicle's engine control unit (ECU) to deliver the appropriate fuel mass. This precision ensures optimal engine performance and fuel efficiency in various European models such as Audi and Volkswagen. A malfunctioning mass air flow sensor can lead to poor engine performance characterized by reduced fuel economy, engine hesitation, and jerking during acceleration. If cleaning your current sensor does not resolve these issues, it's time to replace it with this premium option from Hitachi. Choose Hitachi MAF0022 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Hitachi MAF0022 is equivalent to or replaces the following part numbers: 078 133 471 E, 221061M.
Vehicle Compatibility
- Audi A4 2.8 V6 (2001–2005)
- Audi A6 2.8 V6 (2001–2005)
- Audi A6 Quattro 2.8 V6 (2001–2005)
- Volkswagen Passat GLS 2.8 V6 (2000–2005)
- Volkswagen Passat GLX 2.8 V6 (2000–2005)
- Volkswagen Passat GLX 4 Motion 2.8 V6 (2000–2005)
- Volkswagen Passat GLS 4 Motion 2.8 V6 (2000–2005)
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 Fitâ„¢ - 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 MAF0022 Mass Air Flow Sensor do?
The mass air flow sensor measures the amount of air entering the engine, allowing the ECU to adjust the fuel-air mixture for optimal performance. This ensures efficient operation, smooth acceleration, and proper fuel economy.
How do I know if my Mass Air Flow Sensor needs replacement?
Common symptoms of a failing mass air flow sensor include poor fuel economy, rough idling, engine hesitation during acceleration, and illuminated check engine light. If you experience any of these issues, it may be time to replace this sensor.
Can I install the Hitachi MAF0022 myself?
Yes, the Hitachi MAF0022 can be installed with basic tools and knowledge of vehicle maintenance. Ensure to follow safety precautions and consult your vehicle's service manual for specific instructions.
What are the symptoms of a faulty Mass Air Flow Sensor?
Symptoms of a faulty mass air flow sensor include reduced engine performance, fuel inefficiency, and stalling. If you see DTCs such as P0101, P0102, and P0103, it may indicate a failing mass air flow sensor.
Why should I choose Hitachi for my Mass Air Flow Sensor needs?
Hitachi is synonymous with quality and reliability in automotive parts. Order Hitachi MAF0022 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.
- BrandHitachi
- ManufacturerHitachi
- MPNMAF0022
- Part TypeMass Air Flow Sensor
- OE Part Numbers078 133 471 E, 078133471E
- Cross Reference NumbersMF21061N, AF10148, DL-6121, DL6121, 221061M, 7450030, MA1042, MA306, MQ6319, MAS0170
- FeaturesCalifornia 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
Housing Included : Yes
Manufacturer : Hitachi
New Or Remanufactured : New
Terminal Quantity : 4
Terminal Type : Blade
Wiring Harness Included : No
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2004 | Volkswagen | Passat | GLX (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2004 | Volkswagen | Passat | GLX 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2004 | Volkswagen | Passat | GLS (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2004 | Volkswagen | Passat | GL (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2005 | Volkswagen | Passat | GLX (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2005 | Volkswagen | Passat | GLX 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2005 | Volkswagen | Passat | GLS (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2005 | Volkswagen | Passat | GLS 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 1998 | Audi | A6 | Base (2.8 V6 GAS) | Engine: AHA, VIN: A, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade, With accelerator electronic module |
| 1998 | Audi | A6 Quattro | Base (2.8 V6 GAS) | Engine: AHA, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade, With accelerator electronic module |
| 1998 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | Engine: AFC, VIN: A, Valves: 12, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade, With accelerator electronic module |
| 1999 | Audi | A6 | Base (2.8 V6 GAS) | Engine: AHA, VIN: A, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade, With accelerator electronic module |
| 1999 | Audi | A6 Quattro | Base (2.8 V6 GAS) | Engine: AHA, VIN: A, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade, With accelerator electronic module |
| 1999 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | Engine: AHA, VIN: A, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade, With accelerator electronic module |
| 2000 | Audi | A4 | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Audi | A4 Quattro | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Audi | A4 Quattro | Avant (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Audi | A6 | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Audi | A6 Quattro | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Volkswagen | Passat | GLS (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2000 | Volkswagen | Passat | 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Audi | A4 | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Audi | A4 Quattro | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Audi | A4 Quattro | Avant (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Audi | A6 | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Audi | A6 Quattro | Base (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Audi | A6 Quattro | Avant (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Volkswagen | Passat | GLX (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Volkswagen | Passat | GLX 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Volkswagen | Passat | GLS (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2001 | Volkswagen | Passat | GLS 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Valves: 30, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2002 | Volkswagen | Passat | GLX (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2002 | Volkswagen | Passat | GLX 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2002 | Volkswagen | Passat | GLS (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2002 | Volkswagen | Passat | GLS 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2003 | Volkswagen | Passat | GLX (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2003 | Volkswagen | Passat | GLX 4 Motion (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2003 | Volkswagen | Passat | GLS (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
| 2003 | Volkswagen | Passat | GL (2.8 V6 GAS) | Engine: ATQ, VIN: H, Notes: Grade: Actual OE, Terminal Quantity: 4, Availability: Available Only While Supplies Last, Housing Included: Yes, Terminal Type: Blade |
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.














