Pair of automotive oxygen sensors with black and gray connectors labeled 234-4078 and 234-4076

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Suitable for 2Pcs Up & Down Oxygen Sensors for Jeep Wrangler & Cherokee (4.0L) | 234-4076 234-4078

Suitable for 2Pcs Up & Down Oxygen Sensors

Name: Suitable for 2Pcs Up & Down Oxygen Sensors for Jeep Wrangler & Cherokee (4.0L) | 234-4076 234-4078
SKU: 234-4076 234-4078 /A
Price: 32.95 USD
Availability: InStock

for Jeep Wrangler & Cherokee (4.0L)

🏷️ Replaces OE: 234-4076 234-4078

$32.95

Final: $31.30 -5% OFF

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Dispatched from US Local Warehouse

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Automotive-Leader Sensors

Vehicle Compatible

Year	Make	Model	Trim / Body Style	Engine Specifications
1998-1999	Dodge	Dakota R/T	Standard Cab Pickup 2-Door	5.9L V8 GAS OHV
1996-2001	Jeep	Cherokee	Sport, SE, Limited, Classic, Country	4.0L L6 GAS OHV
1996-2000	Jeep	Grand Cherokee	Laredo, Limited, TSi, Orvis	4.0L L6 GAS OHV
1997-1999	Jeep	Wrangler/TJ	Sport, Sahara	4.0L L6 GAS OHV
1998	Jeep	Wrangler/TJ	SE	2.5L L4 GAS OHV

Product Specifications

Item	Details
Product Set	234-4076(Upstream) + 234-4078(Downstream)
Warranty	2 Years (Improve Fuel Efficiency & Stable Performance & Durable)
Placement	234-4076: Upstream O2 Sensor 234-4078: Downstream O2 Sensor
Sensor Type	Heated 4-Wire
Harness Length	Upstream: 23.23 IN Downstream: 14.37 IN
Interchange Part Numbers	234-4076 Series: 4606421, 4606620, 4686222, 5269744, 56027916, 56028603, 56041111, 56041212, 56041212AE, M05269744 234-4078 Series: 4606133AB, 4606133AC, 4606133AD, 4606133AE, 5033081AA, 5293038AB, 56041005, 56041006, 56041055, 56041056, 56041108, 56041213AB, 56041213AG, 56041219, 56041344AC, 56041344AD

Package Content :

2PCS (1*234-4076 Upstream + 1*234-4078 Downstream) Oxygen Sensor

Bank 1 Sensor 1 means Upstream Right/Rear; Bank 2 Sensor 1 means Upstream Left/Front

Bank 1 Sensor 2 means Downstream Right/Rear; Bank 2 Sensor 2 means Downstream Left/Front

sensor 1=Upstream sensor 2=Downstream

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FAQ & Support

🚦 1. Trouble Codes & Symptoms

Q1: My car shows codes like P0420 / P0171 / P0138. What do they mean?

These are common codes related to the fuel system or oxygen sensors:

P0420: Catalyst efficiency below threshold
P0171: System too lean
P0138: O2 sensor voltage high

They often indicate a worn oxygen sensor, exhaust leak, or ignition issue. If you're not sure, simply tell us your year, make, model, and engine—we'll check the exact part you need.

Q2: My engine shakes at idle. Is my ignition coil bad?

It's very possible. Common symptoms of a failing ignition coil include:

Rough idle or shaking
Hard cold starts
Poor acceleration
Higher fuel consumption
Misfire popping noise

Tell us your vehicle info—our team can help you identify the cause.

Q3: What are the symptoms of a bad oxygen sensor?

Typical signs include: Check Engine Light on, Increased fuel consumption, Poor acceleration, Strong fuel smell, and Slow throttle response.

Most sensors should be replaced every 80,000–100,000 km.

🔍 2. Fitment & Compatibility

Q4: How do I know which oxygen sensor fits my car?

Just provide: Year, Make, Model, and Engine size.

We'll confirm: Upstream or downstream, Correct connector, Proper reference number, and Federal vs. California emissions compatibility.

Q5: What's the difference between ignition coils?

High-quality aftermarket: Close to Standard but more affordable.

We only offer high-grade, reliable ignition coils.

Q6: How many oxygen sensors does my car have?

Most vehicles have 2–4 sensors (Upstream front and Downstream rear). We can confirm the exact number for your vehicle.

🛒 3. Buying, Quality & Concerns

Q7: Are cheap oxygen sensors reliable?

They work for a short time but usually cause issues like short lifespan, slow response, and frequent check engine lights.

We only sell new, high-quality, fully tested sensors.

Q8: How can I avoid buying a refurbished or used auto part?

Check for scratches on the connector, dirty wiring, or marks on threads.

Our parts are 100% brand new, never refurbished, and fully tested.

🧰 4. Installation & Usage

Q9: Can I install an oxygen sensor myself?

Yes. Difficulty: medium.

You'll need an O2 sensor socket, Anti-seize compound, and a Torque wrench. We recommend clearing fault codes with an OBD scanner after installation.

Q10: Do ignition coils need programming after replacement?

In most vehicles, no programming is required. Just swap the old coil with the new one.

💰 5. Value & Performance

Q11: Your parts cost less than Other accessories. Are they really reliable?

Yes—our parts use the same-grade materials and testing standards as suppliers. Because we don't go through dealer channels, the price is much more affordable.

About us

Since its inception, Automotive Leader has been guided by a simple mission: to provide high-performance aftermarket parts for automotive technicians and DIY enthusiasts.

The website is jointly operated by Trademark Name: Automotive-leader Store registered at Physical Address: Room 602, No. 152 Helong East Road, Helong Subdistrict, Baiyun District, Guangzhou City Postal Code: 510000 and Company name：BLUE STAR TRADING LIMITED registered at Company address：RM C，6/F，WORLD TRUST TOWER 50 STANLEY STREET CENTRAL HK

U.S. Address:
7600 LTC Parkway 34986
PORT SAINT LUCIE, FL - United States

Phone Number: +86 15812449181

Email: support@automotive-leaderstore.com

Logistics Policy

1. U.S. Warehouse (Standard Option)
Handling time: 1-3 business days
Transit time (days): 3-6 business days via USPS/UPS/FedEx.

2. China Warehouse (Standard Option)
Handling time: 1-3 business days
Transit time (days): 14-22 business days via USPS/UPS/FedEx.

Refund and Return Policy

30-Day Returns and Refunds / Return shipping is free（Due to a product issue）

We do not accept direct exchanges.

After receiving and inspecting your returned item, we will notify you whether your refund has been approved.

If approved, the refund will be processed back to your original payment method within 5 business days.

Please note that your bank or credit card company may also require additional time to process and reflect the refund.

If you have not received your refund within 10 business days after your return request has been approved, please contact us.

Contact: support@automotive-leaderstore.com

Account

Suitable for 2Pcs Up & Down Oxygen Sensors

Automotive-Leader Sensors

Vehicle Compatible

Product Specifications

Customer Reviews

Subscribe to our email list to receive a 8% VIP discount

FAQ & Support

🚦 1. Trouble Codes & Symptoms

🔍 2. Fitment & Compatibility

🛒 3. Buying, Quality & Concerns

🧰 4. Installation & Usage

💰 5. Value & Performance

About us

Logistics Policy

Refund and Return Policy

Country/Region

Country/Region

Suitable for 2Pcs Up & Down Oxygen Sensors

Title

Automotive-Leader Sensors

Vehicle Compatible

Product Specifications

Customer Reviews

Subscribe to our email list to receive a 8% VIP discount

FAQ & Support

🚦 1. Trouble Codes & Symptoms

🔍 2. Fitment & Compatibility

🛒 3. Buying, Quality & Concerns

🧰 4. Installation & Usage

💰 5. Value & Performance

About us

Logistics Policy

Refund and Return Policy