561174

561174 Cross-Reference — 4in CAC Silicone Hose 561.17400, D10294494, HE4494, K342734,H86-400

561174 is a 4-inch charge air cooler silicone hose for heavy-duty turbocharged trucks, and most people searching it are chasing a boost leak, a split hump, or a hose that finally gave up after too many heat cycles.

What The 561174 Is

The 561174 is a 4-inch inside-diameter charge air cooler hose built from reinforced silicone. It sits in the pressurized air path between the turbo and the charge air cooler, or between the cooler and the intake. Its job is simple: carry hot, pressurized boost air without leaking, ballooning, or collapsing while the engine bay moves around it.

Construction is 4-ply reinforced silicone rather than standard EPDM rubber. Rated service range is -40°F to +500°F, so it stays flexible in winter and does not go soft and spongy on a loaded grade in July. It handles 30+ PSI boost without ballooning at the clamp shoulders, which is where cheap hose usually fails first.

Silicone also resists oil mist, coolant splash, and ozone attack, which is what kills conventional rubber hose in an open engine bay. The 561174 is an aftermarket direct replacement, not a factory part, and it is not affiliated with or endorsed by any vehicle manufacturer. Cross-reference numbers below are listed for identification purposes only.

Why These Numbers Cross

561174, 56117400, and 889626191985 all point at the same physical hose. 561174 is the short-form catalog number most counter systems and invoices carry. 56117400 is the same number carried in the longer eight-digit format that some distribution systems pad out for internal sorting. The trailing zeros are a formatting convention, not a different part.

889626191985 is the UPC barcode. That is what scans at a warehouse or on a shelf label, and it is why a scanned receiving document can show a number that looks nothing like the catalog number on the box end. If your parts system pulled the barcode instead of the SKU, you are still looking at the same 4-inch CAC hose.

So all three numbers describe one part: same 4-inch bore, same silicone construction, same charge air cooler application. If a supplier quotes you one and your records show another, that is a formatting or scanning difference, not a substitution. What still matters is the physical dimensions on your truck, which the number alone will not confirm.

Check Before You Order

Measure the inside diameter on the old hose at the connection, not in the middle where it may have swelled. This part is a 4-inch bore. Then check the length and the shape — straight, hump, or elbow — because a 4-inch CAC hose family covers several profiles and the bore alone does not identify yours. Pull the old part and compare it side by side.

Cross-reference is a starting point, not a fitment promise. Confirm by VIN or by the number printed on the hose you are removing. While you are in there, inspect the clamps: a ruptured CAC hose is often a symptom of a worn clamp, a misaligned cooler, or a hose rubbing on a bracket. Replace the clamps and fix the cause, or you will be back under the hood.

561174 Cross-Reference & Interchange Numbers

These manufacturer and aftermarket numbers commonly cross-reference to 561174. 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 / LineCross-Reference Numbers
Automann56117400, 889626191985

Frequently asked questions

Is 56117400 the same as 561174?

Yes. 56117400 is the padded eight-digit form of the same catalog number, 561174. Some distribution and inventory systems pad numbers with trailing zeros for internal sorting. Both point to the same 4-inch charge air cooler silicone hose.

Why does my receiving paperwork show 889626191985?

That is the UPC barcode for the part, not a separate part number. If a scanner captured the label instead of the SKU, your system will record the barcode. It still refers to the same 4-inch CAC silicone hose as 561174.

Will silicone hold up better than the rubber hose I pulled off?

Silicone handles repeated heat cycling far better than standard EPDM rubber and resists oil, coolant, and ozone degradation that cracks conventional hose. It stays flexible down to -40°F and does not soften at sustained high temperatures. That said, silicone will still fail early if a clamp is worn or the hose is rubbing on a bracket, so correct the underlying cause during installation.

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.

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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.

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