What You're Getting
This is the complete left-hand headlight for Mack Vision and Pinnacle models, '98 to 2018. Complete means complete — chrome housing, the halogen bulbs, the whole works. You're not hunting down a separate bulb kit or pulling your old bulbs out of the busted housing to reuse.
Mack kept this body style on the Vision and Pinnacle for a long run, which is why one part number covers two decades of trucks. But 'long run' doesn't mean 'no changes.' Wiring pigtail ends, mounting tab positions, and bulb sockets can shift between production years, especially around facelift points Mack did mid-run.
This is driver side only — passenger side sells separate under its own number. Don't order this thinking it covers both sides.
Why These Numbers Cross
MKN-401-L lines up with Mack's own MC2502102 and 82359034, plus aftermarket numbers like 114-00625L, 20835551, and 2MO522M floating around from other suppliers. These all point at the same physical headlight — same housing shape, same mounting pattern, same bulb setup — just different catalog systems tagging it.
Where guys get tripped up is assuming any '2018 Pinnacle' headlight is a drop-in. Check the mounting bracket count and the connector style on your old unit before you order. If Mack changed the harness connector on a later build year, the housing might fit but the plug won't marry up without an adapter.
Surest way to confirm: pull the old headlight, find the casting number stamped or molded into the housing, or run your truck's VIN. That's the fastest way to know MKN-401-L is your match before it ships.
Ordering From PartStop
We're out of Tacoma, and if you're local, same-day pickup or delivery is usually doable on this one — it's a part that moves, so we keep it stocked. Not local? Ships nationwide, no issue.
This carries the standard 6+ month warranty. If it's not right for your application after you check it against the old part or the VIN, we'll sort you out — but the confirm-first step saves everybody the return shipping hassle.
One more thing: bulbs included doesn't mean forever. Halogens burn out same as any bulb. If yours are still good in the old housing, you can swap them into this one and keep spares on hand.
MKN-401-L Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to MKN-401-L. 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 |
|---|---|
| Mack | MC2502102, 82359034 |
| Aftermarket | 114-00625L, 20835551, 2MO522M |
Frequently asked questions
Does MKN-401-L fit my 2015 Mack Pinnacle?
Likely yes, this assembly covers Vision and Pinnacle from '98 to 2018, but confirm by VIN or match the casting number on your old headlight before ordering. Mack made small changes over that run and we'd rather you check than deal with a return.
Is this the same as the Mack 82359034 part?
Same physical headlight assembly, yes — 82359034 is Mack's own number for this housing. MKN-401-L is the aftermarket cross for it. Function and fitment are the same, just a different part number depending who's selling it.
Do I need to buy bulbs separately?
No, this assembly comes complete with halogen bulbs already installed. You're getting the full housing, wiring, and bulbs in one unit — no extra bulb kit needed for the initial install.
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.