The 2017 Freightliner 122SD has 2 electrical connector parts with verified fitment on this page — 1 part type and 1 brand, covering all 4 engine options (12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL). Each part includes a manufacturer part number and application notes.
On the 2017 Freightliner 122SD, the connector system supplies the pigtails and connector bodies that terminate the vehicle harness at lamps, sensors and modules. Every listed part is a Fuel Injection Harness.
The 2017 Freightliner 122SD was sold with 4 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 122SD comes from DAYTON.
Each part number listed for the 2017 Freightliner 122SD opens a page with every vehicle that part fits.
Fuel Injection Harness
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DAYTON Fits: 14.8L L6 DIESEL Turbocharged | 9047805 | 🇺🇸 US 🇨🇦 CA | Front | View on Amazon |
| DAYTON Fits: 14.8L L6 DIESEL Turbocharged | 9047806 | 🇺🇸 US 🇨🇦 CA | Rear | View on Amazon |
This table covers the Fuel Injection harnesses.
DAYTON supplies both parts for the 2017 Freightliner 122SD.
Listed part numbers: DAYTON 9047805 and DAYTON 9047806.
Buying Electrical Connector Parts for a 2017 Freightliner 122SD
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 .
Frequently Asked Questions
How many electrical connector parts fit the 2017 Freightliner 122SD?
Our catalog currently lists 2 electrical connector parts for the 2017 Freightliner 122SD across 1 subcategory and 1 brand, covering all 4 engine options (12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged, 14.9L L6 DIESEL Turbocharged and 15.6L DIESEL). Each part is matched to the engine(s) it fits.
Do electrical connector parts differ between 2017 Freightliner 122SD 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 122SD?
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 122SD 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 122SD?
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 122SD
Electrical Connector Parts for Other Freightliner 122SD Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.