What You're Getting
This is the complete driver side heated power mirror assembly for the LT — full arm, head, heating element, and the power motor built in. Not just a glass insert. If your old one is cracked at the base or the motor quit adjusting, this is the whole unit, not a patch job.
Fits International LT model years 2017 through 2025, but 'fits the model' and 'fits your truck' aren't always the same thing on these. IC made running changes on mirror mounting and heater wiring through that span, so don't just order off the year — check the number stamped or molded on your old mirror housing before you buy.
Why These Numbers Cross
4188582C91 is the Navistar/International part number, and 2645A081 is the number you'll see floating around under a different mfr code for the same physical mirror. 4188586C91 shows up too — that's typically the passenger side counterpart, so don't grab it by mistake thinking it's a driver side alt.
INN-919B-LS32 and 563.55101C are aftermarket cross numbers from other suppliers building to the same mirror spec — same mounting bracket, same arm length, same heated element wiring. Where guys get burned is the connector pigtail and whether the heater and power adjust are wired on the same plug or split. Pull your old mirror and match the connector before you order, not after it shows up.
Arm length and mounting angle are the two things to eyeball. IC's LT had a couple different door mount configurations depending on cab config, so a mirror that bolts up fine on one truck can sit wrong on another with a different arm bracket.
Ordering From PartStop
We're in Tacoma and keep this one in stock — if you're local, same-day pickup is usually doable, call ahead so we can have it up front. Ship nationwide too, and it goes out fast since it's not a special order item for us.
Comes with the standard 6+ month warranty. Surest way to confirm fit before you buy: give us the VIN or read the number off the mirror you're pulling off the truck. That beats guessing off model year every time, especially with a truck that's been in production this long.
2645A081 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 2645A081. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| OE/Cross-Ref | 4188582C91, 4188586C91, INN-919B-LS32, 563.55101C |
Frequently asked questions
Does 2645A081 fit my 2019 International LT?
Likely, but confirm it — pull the number off your existing mirror or give us the VIN before ordering. IC had running production changes on the LT mirror mounts, so year alone isn't a guarantee.
Is this the same mirror as the 563.55101C aftermarket brand?
It crosses to the same physical mirror — arm, head, heater, and power motor — but it's a different manufacturer building to that spec. Compare your old part's connector and mount before assuming it's a drop-in.
Does this include the heater and the power motor, or just the glass?
Full assembly — heated element and power adjust motor are both built into the mirror head. If you only need glass, this isn't the part number you want, so check what's actually failed on your old one first.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.