What This Hose Is and Where It Lives
This is the charge air cooler hose that runs on the Detroit Diesel DD15 platform, connecting the charge air cooler piping to the intake side of the engine. It handles hot, pressurized air coming off the turbo after it's been cooled through the CAC, so it's built with reinforced rubber and a specific bend/taper to match the routing on these engines.
Detroit Diesel numbers it 56116400 (also written 561.16400), and you'll see it listed under Detroit Diesel/Freightliner part systems as 561164. International also cross-references this hose under 3558834C1 and 3625343C1 since a lot of these trucks share cooling architecture across the Daimler/Navistar parts network from that era.
If your truck's boost gauge is acting funny, you're hearing a hiss under acceleration, or you can physically see cracking at the hose folds near the clamps, this is usually the part causing it — not the cooler itself.
How the Cross Numbers Line Up — and Where to Double-Check
The numbers on this hose cross because the hose was engineered once and used across multiple badge applications — Detroit Diesel, Freightliner, and International trucks running the DD15 share the same charge air plumbing in a lot of configurations. That's why 56116400, 3558834C1, and 3625343C1 all point back to the same physical part.
Where you need to slow down: hose ID/OD, overall length, and the bend angle at each end. CAC hoses aren't universal even within the same engine family — a slightly different chassis length or cooler mount position can call for a hose with a different curve or an extra inch of straight section before the clamp. Clamp style matters too; some of these run T-bolt clamps, others use spring or worm-gear depending on how the truck was originally spec'd.
Surest way to confirm: pull the old hose and read the number stamped or molded into it, or check your DD15's build sheet/VIN for the charge air cooler hose part number. Don't go off engine model alone — spec variations within the same engine platform are common enough to bite you.
Ordering From PartStop
We stock this hose in Tacoma and pull orders same-day for local fleets and owner-operators who need a truck back on the road, not sitting in the yard waiting on a boost leak repair. Nationwide shipping is standard for guys ordering from outside the PNW.
It's aftermarket, not going to run you three figures for a rubber hose, and it carries our 6+ month warranty. If it doesn't match what came off your truck, we'll sort out the right one — just don't cut the old hose up before you compare, we may need to see the stamped number or take a measurement off it.
561164 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 561164. 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 |
|---|---|
| Detroit Diesel | 8072886, 3539944C1 |
Frequently asked questions
Does 56116400 fit my DD15?
Likely, since that's the Detroit Diesel number for this exact hose, but DD15 charge air routing changed a bit across chassis and years. Confirm by VIN or by reading the number off your old hose before you order.
Is 3558834C1 the same as the Detroit Diesel version?
Yes — 3558834C1 is the International cross-reference for the same physical hose used on shared DD15 applications. Same part, different catalog number depending on which OEM parts system you're pulling from.
My hose looks fine but I've got a boost leak — could it still be this part?
Cracks aren't always visible from outside, especially at the inner fold near the clamp. Pull the clamp back and inspect that section closely, or pressure test the system if you've got the tooling — a pinhole here will cost you fuel economy and power before it fails outright.
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.