The 2018 Freightliner B2 has one listed electrical switch & relay part: a Blower Switch from UAC, covering all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged). It includes a manufacturer part number and application notes.
On the 2018 Freightliner B2, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
The 2018 Freightliner B2 was sold with 3 engines. The single part on this page fits every engine.
The part number opens a page with every vehicle that part fits.
Blower Switch
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| UAC Fits: all 2018 B2 engines | SW11436 | 🇺🇸 US 🇨🇦 CA | Blower Switch Rotary | View on Amazon |
This table covers the Blower switches. Typical signs include a function that works intermittently, or a click without the accessory coming on. Inspect the connector behind the switch; heat-damaged terminals will kill the new part too.
This group shows a single part: UAC SW11436.
Buying Electrical Switch & Relay Parts for a 2018 Freightliner B2
On this vehicle, the switch and relay system covers the switches, relays and flashers that route power to everything the driver touches.
- You do not need to pick an engine: every electrical switch & relay part on this page fits all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged).
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Blower Switch .
Frequently Asked Questions
How many electrical switch & relay parts fit the 2018 Freightliner B2?
This page lists one electrical switch & relay part for the 2018 Freightliner B2: a Blower Switch from UAC, covering all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged).
Do electrical switch & relay parts differ between 2018 Freightliner B2 engines?
No. On this page every electrical switch & relay part fits all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged). You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical switch & relay problems on a 2018 Freightliner B2?
Common symptoms include accessories that work intermittently, a click without action, or one function dead while its fuse tests fine. 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, inspect the connector terminals behind any failed switch — heat damage there will kill the new part too.
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 2018 Freightliner B2 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 2018 Freightliner B2?
Every part on this page already fits all 3 engine options (6.0L V8, 6.7L L6 DIESEL Turbocharged and 6.7L L6 Turbocharged). Then swap a suspect relay with an identical known-good one from the fuse box before buying — it is the fastest diagnostic there is. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2018 Freightliner B2
Electrical Switch & Relay Parts for Other Freightliner B2 Years
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