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Denso 234-9138 - Air / Fuel Ratio Sensor (Upstream)
MPN: 234-9138
The Denso 234-9138 Air/Fuel Ratio Sensor monitors your Volkswagen's air-to-fuel ratio, enhancing fuel efficiency and reducing emissions. Engineered for easy installation and lasting durability.
Vehicle Specific
Check if this part fits your vehicle.
Product Overview
The Denso Air/Fuel Ratio Sensor part number 234-9138 is a superior-quality replacement component designed specifically for Volkswagen models. As a trusted OEM supplier, Denso ensures that this sensor meets the highest standards of performance and reliability, making it an essential addition for maintaining your vehicle's efficiency and emissions control. This sensor plays a critical role in monitoring the air-to-fuel ratio in your engine's combustion mixture, providing real-time feedback to the vehicle's engine management system. By ensuring the optimal air-to-fuel ratio, the Denso Air/Fuel Ratio Sensor enhances fuel efficiency, reduces emissions, and contributes to smoother engine operation. Choose Denso 234-9138 for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Denso 234-9138 is equivalent to or replaces the following part numbers: 22641AA670, 22641AA71A, 24851, 250-54084, 350-64031.
Vehicle Compatibility
- Volkswagen Beetle 2.5L5 (2014)
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 Denso 234-9138 Air/Fuel Ratio Sensor do?
The Denso Air/Fuel Ratio Sensor monitors the ratio of air to fuel in the combustion process. By ensuring the correct mixture, it helps optimize engine performance, improve fuel efficiency, and reduce harmful emissions.
What vehicles is this part compatible with?
This sensor is compatible with the 2014 Volkswagen Beetle with a 2.5L5 engine. For full compatibility, please use the vehicle selector tool above.
What are common signs this part may need replacement?
Common symptoms of a failing air/fuel ratio sensor include poor fuel economy, rough idling, increased emissions, and illuminated check engine light. If you experience these issues, consider inspecting the sensor.
Are there any DTC (Diagnostic Trouble Codes) associated with this part?
Common DTCs associated with air/fuel ratio sensors include P0131, P0132, P0133, and P0134. If you encounter these codes, it may indicate a malfunctioning sensor that requires replacement. It is advisable to consult professional repair documentation or experts for accurate diagnosis.
Why should I choose Denso for my Air/Fuel Ratio Sensor needs?
Denso is a recognized leader in automotive parts manufacturing, ensuring quality and performance. Order Denso 234-9138 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.
- BrandDenso
- ManufacturerDenso
- MPN234-9138
- Part TypeAir / Fuel Ratio Sensor
- PositionUpstream
- OE Part Numbers22641AA670
- Cross Reference Numbers2349138, 24851, 350-64031, 35064031, 250-54084, 25054084
- FeaturesConnector Gender : Male
Grade Type : Regular
Sensor Type : Wide-Band
Thread Diameter : 0.708
Universal Or Specific Fit : Specific
Wire Quantity : 4
Wiring Harness Length : 12.91
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2014 | Volkswagen | Beetle | Base (2.5 L5 GAS) | Notes: DENSO is the O.E. Manufacturer / Direct Fit Air Fuel Ratio Sensor, OE |
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.
