5406187 | Cummins X15 Head Gasket set / Upper Gasket set

Cummins X15 (2017–2021) Upper Gasket Set – OEM Quality Replacement

Don’t let a blown head gasket leave your truck on the side of the road. This Complete Upper Gasket Set is engineered to meet or exceed OE specifications and contains everything you need for a proper cylinder head replacement on your Cummins X15 engine.

Built for durability, our gaskets are designed to withstand the extreme heat, pressure, and vibration of heavy-duty operation—so you can haul with confidence, mile after mile.

Fits:
Cummins X15 Engines (Model Years: 2017–2021)
OEM Replacement #: 5406187
Warranty: 1 Year Limited Warranty

Set Includes (OEM Part Numbers):

(1) Exhaust Outlet Gasket – 2880214
(3) Exhaust Gasket – 3682940
(4) Exhaust Gasket – 3682710
(1) O-Ring – 446GC2128
(1) O-Ring – 3102802
(1) O-Ring – 3685124
(1) O-Ring – 4299125
(1) O-Ring – 618639
(3) O-Rings – 3033247
(3) O-Rings – 335853
(4) O-Rings – 14621
(6) O-Rings – 3347939
(6) O-Rings – 6J2245
(4) Fuel Fitting Seals – 3963990
(4) Fuel Fitting Seals – 3963991
(1) EGR Valve Gasket – 3104230
(1) Cover Gasket – 3679932
(1) Outlet Gasket – 3684359
(1) Water Connection Gasket – 3685456
(1) Timing Cover Gasket – 3687007
(1) EGR Tube Seal – 3687051
(1) Intake Manifold Gasket – 3688347
(1) Cylinder Head Gasket – 3685639
(1) Turbo Mounting Gasket – 3685535
(1) Rectangular Sealing Ring – 4985660
(1) Oil Return Gasket – 3937706

Need help finding the right kit for your truck?
Just add your Engine Serial Number (ESN) at checkout or give us a call. Our team will match the exact kit you need—fast and hassle-free.

Weight	8.0 kg
Dimensions

We offer free standard ground shipping within the USA! If you need your parts in a hurry and would like to get them overnighted or expedited, please give us a call !

NOTE - CUT OFF TIME FOR SAME DAY SHIPPING IS 3PM CENTRAL TIME. ORDERS PLACED AFTER 3PM WILL SHIP OUT NEXT BUSINESS DAY. NEXTDAY SHIPMENTS THAT DO NOT ARRIVE ON TIME ARE NON-REFUNDABLE.
-FOR ORDERS INCLUDING HEAVY ITEMS(INFRAME KITS, HEADS,ETC.) PLEASE CHOOSE THE CORRECT SHIPPING AT CHECKOUT

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

NOTE - All open orders will have a 20% restocking fee. All returns will have a shipping fee.

1 YEAR WARRANTY

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