5 Electrical connector parts are listed for the 2017 Freightliner Cascadia, in 2 part types, covering all 6 engine options (11.9L, 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged and more). Each one has a brand, a manufacturer part number and notes that say where it fits.
The connector system on the 2017 Freightliner Cascadia supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. All 5 listed parts are Fuel Injection Harness (4 parts) and Ignition Connector (1 part).
The 2017 Freightliner Cascadia was sold with 6 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
Every electrical connector part listed for the 2017 Freightliner Cascadia comes from DAYTON.
Each part number listed for the 2017 Freightliner Cascadia opens a page with every vehicle that part fits.
Fuel Injection Harness
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON Fits: 12.8L L6 DIESEL Turbocharged | 9047803 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| DAYTON Fits: 12.8L L6 DIESEL Turbocharged | 9047804 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
| DAYTON Fits: 14.8L L6 DIESEL Turbocharged | 9047805 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front | View on Amazon |
| DAYTON Fits: 14.8L L6 DIESEL Turbocharged | 9047806 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
This table covers the Fuel Injection harnesses.
4 Fuel Injection Harness parts for the 2017 Freightliner Cascadia come from DAYTON.
Listed part numbers: DAYTON 9047803, DAYTON 9047804 and DAYTON 9047805, plus the other parts above.
Ignition Connector
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON Fits: 11.9L | 3110014 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the harness connectors at the Ignition. Typical signs include an intermittent fault that moves when you wiggle the plug, green corrosion, or a melted housing. Match terminal count and keyway, not just color. Many families look identical and will not lock.
One part is listed for the 2017 Freightliner Cascadia — DAYTON 3110014.
Buying Electrical Connector Parts for a 2017 Freightliner Cascadia
On this vehicle, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules.
- Match the engine first. Every electrical connector part here is engine-specific; each row shows which engine(s) it fits.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Fuel Injection Harness and Ignition Connector .
Frequently Asked Questions
How many electrical connector parts fit the 2017 Freightliner Cascadia?
Our catalog currently lists 5 electrical connector parts for the 2017 Freightliner Cascadia across 2 subcategories and 1 brand, covering all 6 engine options (11.9L, 11.9L DIESEL, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged and more). Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2017 Freightliner Cascadia engines?
Yes. Every electrical connector part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical connector problems on a 2017 Freightliner Cascadia?
Common symptoms include intermittent faults that move when the harness is wiggled, green corrosion inside a plug, or melted connector housings near heat sources. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, use heat-shrink crimp connectors rather than twist-and-tape for any pigtail splice, especially outside the cabin.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2017 Freightliner Cascadia was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2017 Freightliner Cascadia?
First match the engine — each row shows which engine(s) the part fits. Then match the connector by terminal count and keyway, not just appearance — many families look identical but will not lock. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2017 Freightliner Cascadia
Electrical Connector Parts for Other Freightliner Cascadia Years
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