Replacement Piston Kit for Cummins ® KT19/KTA38/KTA50/QSK19/QSK38/Q Applications KT 19/38/50 – w/Pin OEM Cross References: 3631244 Superseded/Alternate Numbers: M-3004730, M-3803314, M-AR12313

What’s Included

1 x Piston Kit Aluminum – 14:5:1

Note: Ref. (3096682) Piston

Applications: Cummins K19 / K38 / K50 Series Application

Piston Kit Contents:

OE Replacement: 3631244, 3803314, AR11963, AR12313, 3801437, 3803265, 111354

Cross Reference:

Application & Fitment

• Engine Make: Cummins
• Engine Model / Application: KT/QSK

Confirm the original part number and engine identification before ordering. Where applicable, also verify serial-number range, production year, piston style, bearing size or other configuration notes shown in the product information.

Part Numbers & Cross References

• OEM Cross Reference: 3631244
• Alternate / Superseded: M-3004730, M-3803314, M-AR12313
• Interstate-McBee Reference: M-3631244

Need Help Confirming Fitment?

Use the engine model, serial number and original part number when checking compatibility. For kits and sets, review the complete component breakdown above before ordering because contents can vary by engine configuration.