Does it have a 4 flat or 4 square plug?

Hi Justin it is a 4 square plug. Here is the picture from the Densoautoparts website:http://densoautoparts.com/find-my-part/vehicle-selection. You can put your car's (or truck) year. make,ect. and get the sensor's picture from clicking a camera symbol. Hope this helps. I am a big fan of denso (used to be nippondenso) parts. Quality stuff and not too pricey.

03 Chevy Monte Carlo downstream 3800 will it fit

It fit my 1999 Pontiac Bonneville with the 3800,works great

Does the sensor come with wiring harness and plug

No. Wiring the old connector was not difficult, but you must be careful choosing the right wires as colors were not the same as my 2003 Buick. More importantly, the output didn't match and I replaced it with OEM ACDelco that worked perfectly.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

المساعدة تتبع الطلب

الحساب عربة التسوق

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

المساعدة تتبع الطلب

الحساب عربة التسوق

Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles)

Denso Oxygen (O2) Sensor - 234-4018 (Fits Select Models and Years of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac Vehicles)

Product ID: 7701833

Details

Brand
Denso
Item Weight
0.25 Pounds
Item dimensions L x W x H
5.75 x 2.19 x
Material
Stainless
Style
Replacement

⛽Boosts fuel efficiency by up to 15%

🔧Plug-and-play 4-wire harness, 15.35 inches

🛡️OE-grade durability with aluminum oxide trap

E£ 6259

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

Description

⛽ Upgrade your ride’s brain — smarter sensor, smoother drive!

PRECISION OE FIT - Engineered for exact replacement, ensuring first-time perfect installation and seamless compatibility with select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models.
TRUSTED BY THOUSANDS - With a 4.6-star rating from over 900 reviews, this sensor is the go-to upgrade for professionals who demand reliability and performance.
DURABILITY THAT LASTS - Exclusive aluminum oxide trap protects against silicone and lead poisoning, extending sensor life even under extreme conditions up to 1000°F.
EFFORTLESS INSTALLATION - Designed with a 4-wire, 15.35-inch harness for quick, hassle-free setup—get your ride back on the road faster and smarter.
FUEL EFFICIENCY MAXIMIZER - Advanced sensor technology optimizes air-fuel mixture, reducing emissions and improving mileage—because every drop of fuel counts.

The Denso 234-4018 Oxygen Sensor is a high-precision, OE-standard replacement part compatible with select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles from the late 90s to early 2000s. Featuring a 4-wire 15.35-inch harness and an exclusive aluminum oxide trap, it enhances fuel efficiency, reduces emissions, and offers long-lasting durability under extreme temperatures. Trusted by professionals and backed by stellar reviews, it ensures a perfect fit and reliable engine performance from the first install.

Specifications

ASIN	B000C5WCOA
Best Sellers Rank	#109,689 in Automotive ( See Top 100 in Automotive ) #231 in Automotive Replacement Oxygen Sensors
Brand	Denso
Brand Name	Denso
Customer Reviews	4.6 out of 5 stars 916 Reviews
Global Trade Identification Number	00042511140189
Included Components	Oxygen (O2) Sensor
Item Dimensions	5.75 x 2.19 x 1.88 inches
Item Type Name	Oxygen Sensor
Item Weight	4 ounces
Item dimensions L x W x H	5.75 x 2.19 x 1.88 inches
Manufacturer	Denso
Material	Stainless Steel, Zirconium
Material Type	Stainless Steel, Zirconium
Measurement Accuracy	±1.5%
Model	234-4018
Mounting Type	Surface Mount
Number of Items	1
Output Type	electrical signal
Part Number	234-4018
Sensing Distance	5 centimeters
Specific Uses For Product	Replacement Oxygen (O2) Sensor
Style	Replacement Part
Style Name	Replacement Part
UPC	042511140189
Unit Count	1 Count
Upper Temperature Rating	1000 °F
Warranty Description	30 Days

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

E£ 6259

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews