What This Hose Is
This is a straight silicone connector, 3 in inside diameter, 85 mm long, built with four plies of reinforcing fabric between the silicone layers. It is a coupler, not a shaped elbow. It joins two hard pipes of matching outside diameter — typically a radiator or charge-air pipe to a turbo outlet, intercooler pipe, or engine inlet, depending on how the truck is plumbed.
Four-ply construction matters on a short length like this. An 85 mm coupler carries almost all of its load at the clamp bands, and a thin-wall hose will neck down, blister, or blow off under boost. The extra plies keep the wall stiff enough to hold shape when two T-bolt clamps are pulled up tight.
Silicone is used here for heat and age resistance. It does not go hard and glazed the way EPDM rubber does after a few years of heat cycling. It is not fuel or oil resistant, so it belongs in coolant and air plumbing only — never as an oil drain or fuel line.
Why These Numbers Cross
6112001118006 and 6112001243002 describe the same physical coupler: same 3 in bore, same 85 mm cut length, same 4-ply wall. Silicone couplers get catalogued by dimension, not by application, so one part ends up carrying more than one reference number as it gets listed under different engine and chassis programmes. The numbers are separate catalogue entries pointing at one piece of hose.
That is also why a cross-reference on a hose is more reliable than on a machined part. There are no casting variations, no port timing, no left- and right-hand versions. If the bore is 3 in and the length is 85 mm, the part interchanges. What changes between applications is the clamp type and the pipe bead, and those live on the truck, not on the hose.
Those numbers are listed for identification only. World Truck Parts is not affiliated with, endorsed by, or authorised by any original-equipment manufacturer, and this is an aftermarket part.
Check Before You Order
Pull the old hose and measure it. You need the pipe outside diameter at both ends — it should be right at 3 in for this coupler to seat — and the gap between the two pipe ends. If the gap is much under 85 mm you will end up with a bunched hose that walks off under vibration. Much over and you lose clamp land on one side.
Look at the pipe ends while they are exposed. A raised bead or rolled lip is what stops the hose from blowing off; if a bead is flattened or a pipe end is pitted from coolant, the new hose will leak no matter how good it is. Cross-reference is a starting point — confirm fit against the number on the old part or by VIN before you commit.
6112001118006 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 6112001118006. 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 |
|---|---|
| OE/Cross-Ref | 6112001243002 |
Frequently asked questions
Can I run 6112001118006 on a charge-air pipe under boost?
The 4-ply reinforcement is what makes short couplers usable on pressurised air plumbing, and this hose is built that way. Use T-bolt clamps, not worm-gear clamps — worm gears cut into silicone and let go. Make sure both pipe ends have an intact bead before you install.
Is 6112001243002 a different part or the same hose?
Same hose. Both numbers refer to a 3 in ID, 85 mm straight silicone coupler with 4-ply reinforcement. They are separate catalogue references for one physical part. Listed for identification only — verify against the number stamped or printed on the hose you are replacing.
Why did my old silicone coupler blow off instead of splitting?
Blow-off is almost always a clamp or pipe problem, not a hose problem. Check for a flattened bead on the pipe end, a clamp sitting off the hose land, or oil contamination from a leaking turbo seal making the bore slippery. Silicone has no oil resistance and will swell if fed oil.
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
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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.