What This Pan Is and Where It Goes
This is the bottom pan that bolts under the reefer unit on Precedent S-600, S-700, and C-600 series units - it's the panel that catches condensate drain-off and protects the guts of the unit from road spray, gravel, and salt. Number stamped on the unit is 93-1224.
These pans take a beating. They're low, they're exposed, and they're the first thing to catch a chunk of tire tread or a curb hit backing into a dock. Once they rust through or crack, you get water intrusion into places that don't want water - wiring, coil fins, condensate management - so don't just let a hole sit there because 'it still runs.'
This is a bolt-on replacement panel, not a full unit teardown. Straightforward swap if you've got it up on a lift or stands with decent access underneath.
About the 90-3673 and DR-015 Cross
90-3673 is Thermo King's own superseded or alternate part number for the same bottom pan - manufacturers renumber parts across running changes and revisions, so the same physical panel ends up carrying more than one factory number over the years. DR-015 is the aftermarket manufacturer's stamp for a pan built to the same mounting pattern and dimensions.
On body and exterior pans like this, what actually matters is bolt hole spacing, overall pan depth, and how it seats against the unit's frame rail and drain provisions. A pan that's off by even half an inch in depth won't seal right against the coil housing, and you'll get water finding its way in somewhere you don't want it.
Before you order, pull the number off your old pan - or your unit's data plate if the pan's too far gone to read - and match it against what's listed here. Precedent units went through model year changes, and a S-600 built early in the run can differ from one built late. VIN or unit serial number is your surest confirmation if the old pan number's rusted illegible.
Ordering From Us
We keep 93-1224 stocked here in Tacoma for same-day will-call if you're local - call ahead and we'll have it staged. Fleets running reefer routes up and down I-5 order these from us regularly because a cracked pan isn't something you want to park a trailer over.
Ship nationwide if you're not in the Tacoma area - boxed and freighted out, no drama. Comes with our standard 6+ month warranty.
This is a direct replacement panel and it cross-references to the numbers listed, but confirm fit against your old part or unit VIN before you buy. We'll take a return on an unused, unmounted pan if it turns out wrong - just don't drill it or paint it first.
93-1224 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 93-1224. 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 |
|---|---|
| Thermo King | 90-3673 |
| Aftermarket | DR-015 |
Frequently asked questions
Does 93-1224 fit my Precedent S-600?
Most S-600 units use this pan, but Precedent production spans several years with running changes. Pull your unit's serial number or the old pan's stamped number and give us a call - we'll confirm before you order so you're not stuck with a mismatch.
Is this the same as the Thermo King 90-3673?
Yes - 90-3673 is Thermo King's alternate or superseded number for this same bottom pan. Same physical part, different number stamped depending on when it was cataloged.
Can I install this myself or does it need a reefer tech?
It's a bolt-on panel, so most shops handle it with basic hand tools and a lift. No refrigerant work involved since it's just the exterior bottom pan, not anything in the sealed system.
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.