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Door Mirror Arm Cover LH Black - Freightliner Cascadia 2018-2025 - 22-78606-508 563.46113 FP-128-0373L
Door Mirror Arm Cover LH Black - Freightliner Cascadia 2018-2025 - 22-78606-508 563.46113 FP-128-0373L
FleetPro

Door Mirror Arm Cover LH Black - Freightliner Cascadia 2018-2025 - 22-78606-508 563.46113 FP-128-0373L

In stock
SKU: FP-128-0373L
$20.80
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Fitment

Fits these trucks

Freightliner Cascadia 2018-2025 (New Cascadia, P4 body style)Left hand (LH), driver sideBlack finish cover over the door mirror arm
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

6 cross-refs
Freightliner 22-78606-508 Freightliner 22-78606-517 Freightliner 22-76858-508 Automann 563.46113 Torque TRM310500BL Trucklite 28661
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

Tidy up the driver-side mirror arm with this Premium door mirror arm cover in black for the left-hand side of the New Cascadia, the P4 body style built from 2018 through 2025. The cover is the shell over the mirror arm, and it is the piece that cracks when the mirror gets folded back at a dock or catches a branch. A missing or split cover leaves the arm and its wiring open to weather and looks exactly as rough as it is. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

Cover, Not the Whole Mirror: The Cascadia LH Arm Cover Advantage

The reason to know this part exists is money. A cracked cover does not mean the mirror is done: the head, the glass, the heater and the adjustment can all be perfectly good while the shell over the arm is broken. Replacing the cover alone puts the front of the truck back in order for a fraction of a complete mirror assembly, and it is a bolt-on job rather than a rewiring one.

At FleetPro Parts & Tires we stock the small piece so the big piece stays on the truck. This black left-hand cover is a direct replacement for highly searched industry numbers including Freightliner 22-78606-508, 22-78606-517 and 22-76858-508, plus Automann 563.46113, Torque TRM310500BL and Trucklite 28661. It ships new at our Premium Aftermarket level with a 1-Year FleetPro Warranty.

Vehicle Fitment & Compatibility

This Premium mirror arm cover is intended for the following commercial application:

  • Make/Model: Freightliner Cascadia 2018-2025 (New Cascadia, P4 body style)
  • Side: Left hand (LH), driver side
  • Finish: Black
  • Position: Cover over the door mirror arm
  • Component Group: Mirrors & Brackets / Mirror Arm Covers

Direct Replacement & Cross-Reference Numbers:

This FleetPro Premium mirror arm cover serves as a direct replacement for the following part numbers:

  • Freightliner Interchange: 22-78606-508, 22-78606-517, 22-76858-508
  • Automann Interchange: 563.46113
  • Torque Interchange: TRM310500BL
  • Trucklite Interchange: 28661
  • FleetPro Part #: FP-128-0373L

Technical Specifications

  • Component Type: Door Mirror Arm Cover
  • Side: Left hand (LH), driver side
  • Finish: Black
  • Vehicle: Freightliner Cascadia 2018-2025 (P4)
  • Condition: New
  • Warranty: 1-Year FleetPro Warranty
  • Product Level: Premium Aftermarket
  • Brand: FleetPro (Distributed by FleetPro Parts & Tires)
Key features
  • Cover Only, Mirror Stays: A cracked shell does not need a complete mirror assembly when the head, glass and heater are still good.
  • Correct Driver-Side Half: Sold as the left-hand cover, so one damaged side is one part on the order.
  • Black Finish: Matches the Cascadias built with black mirror hardware, so the repair does not read as a patch.
  • Protects the Arm and Wiring: Puts the shell back over the mirror arm instead of leaving it open to road spray and salt.
  • Four-Brand Interchange: Covers Freightliner 22-78606-508, 22-78606-517 and 22-76858-508 plus Automann 563.46113, Torque TRM310500BL and Trucklite 28661.
Specifications
Component Type
Door Mirror Arm Cover
Side
Left hand (LH), driver side
Finish
Black
Vehicle
Freightliner Cascadia 2018-2025 (P4)
Condition
New
Warranty
1-Year FleetPro Warranty
Product Level
Premium Aftermarket
Questions
Will this fit my truck?
This part fits Freightliner Cascadia 2018-2025 (New Cascadia, P4 body style), Left hand (LH), driver side, Black finish cover over the door mirror arm. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Freightliner 22-78606-508, Freightliner 22-78606-517, Freightliner 22-76858-508, Automann 563.46113, Torque TRM310500BL, Trucklite 28661.
How fast does it ship?
In-stock orders placed before 12 PM Central on business days ship the same day from our Hanover Park, IL warehouse, and typically arrive in 2 to 5 business days anywhere in the USA.
What's your return policy?
Unused items in original packaging can be returned within 30 days, backed by our 30-day money-back guarantee. If we ship the wrong part, we cover the return label and send the correct one.