What This Gasket Actually Does
This sits right at the turbo outlet flange where compressed air leaves the turbo and heads into the charge air cooler piping. On an ISX15, that joint sees heat cycling and vibration, and the gasket material takes a beating over time – it hardens, flakes, or just gets crushed flat and stops sealing.
When it fails you'll usually see it as a boost leak, sometimes a whistling noise under load, or the engine just not making the power it should. Techs will pull the outlet piping, look at the old gasket, and if it's cracked or thin compared to a new one, that's your answer.
This one's specific to the ISX15 turbo outlet location – not the same gasket as the compressor inlet or the intake manifold. Match the part off the truck, not off memory, since Cummins used different gaskets across ISX generations.
How the Cross Numbers Line Up
3102314 is the Cummins number, and it also shows up as K3102314 and CUP131673 depending on which Cummins parts catalog or kit you're pulling from – same physical gasket, different label paths through their system. OEM-3682826 is the aftermarket cross that fits the same flange.
Because this is a flat gasket (not a hose or a part with moving pieces), there's no spline count or arm length to worry about like you'd have on a slack adjuster or air valve. What matters here is the bolt pattern and the flange opening size matching your outlet housing exactly.
Still, ISX15 engines got running changes over the years, and Cummins isn't always consistent about updating every gasket number when they tweak a flange. Pull the old gasket and match the bolt hole spacing and the shape of the center opening before you order, especially if your engine is on the older or newer end of ISX15 production.
Ordering From PartStop
We stock 3102314 at the Tacoma counter and it's usually a same-day pickup if you're local – reloadable if you need to swap for a different application. For everyone else, we ship nationwide, and a flat gasket like this ships fast and cheap.
Give us your VIN or the number stamped on the old gasket if you can still read it, and we'll confirm before it goes out the door. Comes with our 6+ month warranty, though on a gasket like this the failure mode is usually obvious within the first heat cycle or two if something's off.
If you're already pulling the outlet piping, it's worth checking the surrounding clamps and hoses while you're in there – no point doing this job twice in six months.
3102314 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 3102314. 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 |
|---|---|
| Cummins | K3102314, CUP131673 |
| Aftermarket | OEM-3682826 |
Frequently asked questions
Does 3102314 fit my Kenworth with an ISX15?
Likely, but confirm by your engine's serial number or pull the old gasket and match it – Cummins made changes to the ISX15 outlet flange over its production run, so don't go off truck year alone.
Is OEM-3682826 the same as the Cummins 3102314?
It crosses to the same turbo outlet location and should seal the same flange, but it's a separate aftermarket part number, not a Cummins-branded piece. Match the flange opening and bolt spacing against your old gasket before installing.
Can I reuse the old gasket if it still looks okay?
Not recommended once it's been removed – these are single-use, and reinstalling a used one almost always leads to a boost leak within a few weeks even if it looks fine to the eye.
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.