Dacall 4861963AA Evaporative Emissions Leak Detection Pump — OE-fit EVAP module, diaphragm sensor

The Dacall 4861963AA Evaporative Emissions System Leak Detection Pump is a direct-fit EVAP integrity module engineered to restore accurate leak detection and reliable emissions system operation on compatible Chrysler, Dodge, Jeep and Ram vehicles.

This replacement EVAP System Integrity Module (ESIM) is built to OEM-quality standards to support precise leak diagnostics and dependable sealing in fuel vapor control systems. It replaces multiple factory part numbers and is meant for a wide range of Chrysler Group vehicles — from sedans like the Chrysler 200 and Dodge Avenger to SUVs and heavy-duty Ram truck applications. The unit pairs a diaphragm-switch sensing element with fuel-resistant sealing and an OE-style electrical connector so it fits cleanly into the original harness and mounting points.

How does this ESIM help my vehicle detect evaporative leaks?

The Dacall 4861963AA monitors small pressure and vacuum changes in the EVAP line using a diaphragm-switch sensor. It detects leaks as small as 0.020 in (0.5 mm), enabling the vehicle’s onboard diagnostics to identify EVAP faults more reliably.

• Diaphragm-switch sensing for sensitive pressure response
• 0.020 in leak detect capability for precise diagnostics
• Supports accurate EVAP DTC generation and testing

Will this part fit my Chrysler, Dodge, Jeep or Ram model?

This module covers a wide list of Chrysler Group applications. Always verify your vehicle’s OEM part number and service manual fitment before purchase to ensure compatibility with your model year and engine variant.

• Chrysler 200 (2011–2014) — sedan models
• Dodge Avenger (2008–2014), Journey (2009–2020)
• Jeep Commander and Grand Cherokee (2007–2010)
• Ram 2500/3500/4500/5500 coverage for specified years and engine options

What construction and materials ensure durability?

Built with automotive-grade components chosen for thermal and chemical resistance, the Dacall module is designed to withstand the harsh conditions of underbody and engine-bay installation. The assembly uses an OE-style connector and a fuel-resistant O-ring to maintain electrical stability and a tight vapor seal.

• High-temp resistant housing rated from −40°F to 275°F
• Fuel-resistant O-ring for long-lasting seals
• Precision-calibrated diaphragm for repeatable pressure response
• OE-style connector compatible with factory harnesses

How does this replace OEM part numbers and what should I expect on installation?

The Dacall ESIM is engineered to replace several factory part numbers, making it a suitable aftermarket substitute for routine repairs or EVAP troubleshooting. Installation generally follows the factory location and mounting points, and electrical connections are plug-and-play with the correct harness.

• Replaces part numbers: 4861963AA/AB/AC/AD and related SKUs
• Expect direct-fit mount and OE-style electrical mating
• Follow vehicle service manual for removal and torque specs

Who is this for? The Dacall 4861963AA Evaporative Emissions System Leak Detection Pump is designed for technicians, independent repair shops, and DIY owners working on Chrysler, Dodge, Jeep and Ram vehicles that require dependable EVAP leak detection replacement. It’s ideal for vehicles exhibiting EVAP-related fault codes, failed smoke tests, or when OEM part replacement is needed for proper emissions diagnostics and system integrity restoration.