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This usually takes 5-15 seconds. We're pulling together fitment data,
OEM numbers, and community knowledge...
Dusting off the service manual...
💡 This page improves over time as the community adds casting photos and confirms fitment
Evaporator Core
This usually takes 5-15 seconds. We're pulling together fitment data,
OEM numbers, and community knowledge...
Dusting off the service manual...
💡 This page improves over time as the community adds casting photos and confirms fitment
Quick reference
Verify compatibility with specific trim levels, as some may have minor differences.
Check for mid-cycle updates that may affect part design.
Ensure proper evacuation of refrigerant before disassembly.
Context
When replacing the evaporator core in a 2018 Ford Mustang equipped with the 5L V8 Coyote engine, it is crucial to use the correct OEM part number, such as FR3Z19855A. This part is designed for the 2015-2019 Ford Mustang range and is compatible with both the 2.3L EcoBoost and the 5.0L V8 engines. During installation, ensure that the HVAC system is fully discharged and consider inspecting the surrounding components for wear. Common failure points include clogged fins and leaks. If sourcing from a junkyard, look for vehicles of the same model year and engine type, as their evaporator cores are likely to be interchangeable. Always verify that the mounting brackets align correctly to avoid fitment issues during installation.
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Confirmed fitment
| Year | Make | Model | Engine | Confidence |
|---|---|---|---|---|
| 2018 | Ford | Mustang | 5L V8 Naturally Aspirated Coyote V8 (435hp) | 80% |
Available parts

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