Compare Freightliner Cascadia replacement headlights, including LED assemblies, projector designs and original-style halogen options. Match the exact product’s model years, truck generation and factory lighting equipment before choosing.
Check Driver or Passenger selection, black or chrome finish and whether the listing supplies one headlight or a pair. Factory-LED replacements are not automatically compatible with halogen-equipped trucks; confirm the original housing, mounting and connectors.
Start with your truck’s generation and original lighting setup, then compare the exact assembly, selected side and supplied components. Product-specific fitment limits take priority over the category name.
Identify the model year and whether the truck originally used halogen or LED headlights. Earlier and later Cascadia assemblies have different applications. For example, the 10-LED chrome projector listing specifies 2018–2023 trucks originally equipped with factory LED headlights and excludes original halogen headlights. Use the exact product’s range and equipment restrictions.
LED position lights do not necessarily mean the main beams are LED. United Pacific 31319/31320 original-style assemblies for 2008–2017 Cascadia list H11 55W low and high beams and a 4157 turn signal. That specification applies to those assemblies; use the installed housing’s bulb requirements for future service. Integrated LED headlights do not accept an additional loose LED bulb.
Some listings supply one Driver or Passenger assembly, while others explicitly offer a pair. Compare the selected variation and stated contents before comparing prices. Check finish, included bulbs, harnesses, adapters and resistors rather than assuming every assembly comes with the same components.
Match the original part reference, mounting points and connector to the selected assembly. Added DRL, position-light and turn-signal functions can have their own requirements. Follow product-specific instructions for modules and load resistors; do not apply one product’s resistor instructions across the range. Check all lighting functions and beam aim after installation.
Match the model year, truck generation and factory lighting equipment to the exact product's application. Factory halogen, factory LED and previously fitted replacement assemblies can have different requirements. Compare the housing, mounting and connector before ordering.
Do not assume it will. Some assemblies are restricted to trucks originally fitted with LED headlights. Check the product's equipment exclusions and connection requirements; a matching model name or similar housing shape does not establish a direct replacement.
Check the listing and the selected option. Some products supply one selected side, while others have different package contents. Confirm the driver or passenger option and whether bulbs, harnesses, resistors or adapters are included.
Identify whether you need an OEM bulb size or a bulb for an aftermarket housing. Use the guide or specification for that exact setup, then check the stated bulb application. An integrated LED headlight does not accept an additional loose LED replacement bulb.
No single installation description covers the full category. Read the selected product's mounting, wiring, aiming and equipment instructions, together with its stated markings and application restrictions. Use any required module, resistor or harness only as specified for that product and truck.
No. Check the low- and high-beam light-source specifications separately from DRL and position-light features. Some assemblies use replaceable halogen bulbs with LED accents, while others have integrated LED main beams.
Those original-style 2008–2017 Cascadia assemblies specify H11 55W low beam, H11 55W high beam and a 4157 turn signal. Confirm the part number and installed housing before using this information to order bulbs; it is not a bulb guide for every Cascadia headlight.
