ACAUTO Oxygen O2 Sensor for Ford F-150 — 4-Pack Direct-Fit Upstream & Downstream with OE Connectors

ACAUTO 15717 oxygen sensors are direct-fit upstream and downstream replacements designed to restore accurate oxygen readings and efficient fuel-air control on compatible Ford and other vehicle models.

If your check engine light is on or your vehicle shows reduced fuel economy, a worn oxygen (O2) sensor is a common cause. The ACAUTO 15717 sensors are engineered as drop-in replacements with OE-style connectors and pre-applied anti-seize threads, speeding installation while minimizing fitment issues. This listing covers a 4-pack suitable for front and rear locations on many Ford, Lincoln, Mercury, Mazda, Jaguar and other makes that use the listed OE cross-reference numbers.

How will these sensors affect engine performance and emissions?

Oxygen sensors monitor exhaust oxygen content to help the engine control module adjust fuel mixture. Replacing failing sensors helps the vehicle return to intended fuel trims and can reduce rough idling or poor acceleration caused by incorrect air-fuel ratios.

• Restores accurate oxygen readings for proper fuel trimming.
• Helps reduce check engine codes related to O2 sensor circuit or performance.
• Improves drivability by stabilizing idle and throttle response.

Will these units fit my Ford F-150 or other models?

These ACAUTO sensors are listed to replace OE numbers such as 15717, 15716, 15718 and many common factory references. They are intended as direct-fit replacements for a wide range of Ford trucks, SUVs and other makes that match the cross-reference list included with the product.

• Direct-fit connectors and harnesses mimic OEM geometry for easier installation.
• Cross-reference coverage includes many Ford, Lincoln, Mercury, Mazda and selected other models.
• Verify your vehicle’s required OE number against the provided replacements before ordering.

What materials and features ensure accuracy and durability?

ACAUTO builds these sensors using durable materials—platinum elements, ceramic sensing cells and 310S stainless housings—to withstand exhaust conditions and deliver consistent readings over time. A fast-acting internal heater brings the sensing element to operating temperature quickly for reliable performance in cold starts and warm running conditions.

• Platinum and ceramic sensing element for stable voltage response.
• 310S stainless steel body for corrosion and heat resistance.
• Integrated heater reduces warm-up time to improve early operation.

How easy is the installation and what’s included?

ACAUTO sensors are supplied as direct replacement parts with OE-compatible thread sizes and connectors, and threads come pre-coated with anti-seize compound to simplify threading and future removal. The package contains four sensors so you can replace upstream and downstream units as needed.

• 4-pack includes sensors for both upstream and downstream positions.
• OE-style plug and wiring help avoid splicing or adapter needs.
• Anti-seize on threads prevents galling and eases future service.

Who is this for: Technicians, DIY mechanics, and vehicle owners who need reliable, budget-conscious replacement oxygen sensors for models that accept the 15717 family of OE cross-references. Ideal when addressing persistent O2-related diagnostic codes, restoring proper fuel economy, or performing scheduled exhaust system maintenance. Always confirm your vehicle’s required part number against the listed cross-references to ensure correct fitment before purchase.