What This Hose Is and Where It Goes
This is a straight silicone coupler, 4" inside diameter, 6" length, used in the charge air cooler (CAC) piping on Freightliner trucks. It's not a molded elbow — it's a straight connector, so it's doing the job of tying two pipe ends together and absorbing vibration and heat cycling that a hard pipe joint can't handle.
Silicone is the right material here because CAC air runs hot, especially post-turbo before it hits the cooler. Rubber couplers cook and crack in that spot faster than silicone does. Wall thickness and reinforcement plies matter too — that's part of why the same physical hose ends up cataloged under a handful of different part numbers.
Length and ID have to be exact. A 4" ID hose that's actually 3.9" won't seal right under clamp pressure, and 6" length gives you enough overlap on both pipe ends without being so long it kinks under vibration.
Why These Numbers Cross and What to Check
TRCAC4060 shows up as a cross to International/Navistar 3558834C1, Volvo/Mack 8072886, Kenworth D50-6039, Volvo 1517001, and a couple Flexfab numbers (FFB4070-0001, FFB7715-0002) plus Stant/SASS SASS-28017. These aren't different hoses pretending to be the same — they're the same silicone coupler sold through different OE and aftermarket channels, which happens a lot in CAC piping since Freightliner, International, and others sometimes shared cooling system suppliers on certain engine platforms.
Before you order, don't just match on ID and length alone — pull the number off the failed hose or run the truck's VIN. CAC hoses in this ID range get used in multiple spots on the pipe run, and a straight coupler that's 4" x 6" can look identical to one that's 4" x 8" once it's dirty and half-collapsed on the bench. Get the number, or measure clean.
Also check clamp style and pipe OD where the hose seats — some Freightliner setups run T-bolt clamps, others use spring clamps, and while that's not about the hose itself, it affects whether your old clamps will reuse or if you need new ones to get a proper seal.
Ordering From PartStop
We keep TRCAC4060 in stock in Tacoma, and if you're local we can have it across the counter same day. If you're not local, it ships nationwide — no reason a fleet in Ohio should wait extra on a $40 hose.
Every one of these carries our 6+ month warranty. If it's cracked, delaminated, or just doesn't seal right out of the box, we deal with it — no runaround.
Last thing: confirm fit by VIN or the number stamped on your old hose before you order. We'll cross-reference it for you on the phone if you're not sure, but we're not going to tell you it's a guaranteed fit sight-unseen — nobody honest will.
TRCAC4060 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to TRCAC4060. 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 |
|---|---|
| Navistar/International | 3558834C1 |
| Volvo/Mack | 8072886 |
| Kenworth | D50-6039 |
| Volvo | 1517001 |
| Flexfab | FFB4070-0001, FFB7715-0002 |
| Stant/SASS | SASS-28017 |
Frequently asked questions
Does TRCAC4060 fit my Freightliner Cascadia?
Depends on the engine and CAC pipe routing for your model year — Freightliner used a few different CAC configurations across Cascadia builds. Pull your VIN or the number off the old hose and we'll confirm before you order.
Is this the same as Volvo 1517001?
It cross-references to it — same 4" ID, 6" length silicone coupler spec. But always match against the number on your old part or your VIN, since Volvo used similar-looking couplers in more than one spot on some CAC runs.
What clamps do I need with this hose?
The hose itself doesn't come with clamps. Check what you pulled off — T-bolt clamps are common in this application and give a tighter, more even seal than standard spring clamps on 4" silicone couplers.
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.