My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

APW Warehouse Supplies AP4-21 Oxygen Sensor Direct Fit Replacement

Part of: APW Warehouse Supplies OE Style Replacement Oxygen Sensor

Other options in this family: APW Warehouse Supplies AP4-54 APW Warehouse Supplies AP4-336 APW Warehouse Supplies AP4-334 APW Warehouse Supplies AP4-330 APW Warehouse Supplies AP4-46

Manufacturer

Picture for manufacturer APW Warehouse Supplies

Part Number

AP4-21
14 reviews
Sale Price

$22.39

In Stock (7)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The APW Warehouse Supplies AP4-21 is a direct-fit replacement oxygen sensor designed to restore proper engine performance and emissions control. This sensor monitors the oxygen content in exhaust gases, providing critical feedback to the engine control module for optimal air-fuel mixture adjustment.

Key Features:

  • Direct-fit OE-style replacement for easy installation
  • Precision-engineered sensing element ensures accurate readings
  • Helps maintain fuel efficiency and reduce harmful emissions
  • Pre-wired connector for plug-and-play installation
  • Designed to meet or exceed OE specifications

APW International oxygen sensors are manufactured to strict quality standards, providing reliable performance for a wide range of vehicle applications. The sensor features a durable construction designed to withstand harsh exhaust system conditions including extreme temperatures and corrosive gases.

Great experience.

Very detailed list of part fitment. Radiator fits and functions very well. BUT, and this may be no fault of Autoplicity, I received the radiator w/holes punched in the box and some of the cooling fins bent. It wasn't bad enough to warrant a return, thoug

easy site to navagate. found all the parts i needed

Great product!

I have no comment right now. 1st timer

Quick and easy ordering. Thanks.

Shipping$$

Easy to find parts needed and offer many discount codes above their already low prices. Received item two days after I ordered.

Lets see how it goes

So far so good!

Quick experience. Good prices. A little concerned that the order didn't display my exact vehicle for verification of fit purposes.

Easy and affordable!

received a follow up phone call within a hour letting me know that my order #5153 would be coming from a certian warehouse and about what time it will arrive...Great service!!!highly recommend

It was easy to find everything and quick

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy