Personal menu

Our offices are closed for Thanksgiving. Orders placed online will be processed on Monday 12/1/2025.

My account

My account Close

Register Log in

Piston Ring Sets for Cummins NH and NT 855 Engines

We carry piston ring sets for NH220, NH250, and NT855 (Big Cam/Small Cam) models. You can easily access our parts selection by using the product links listed below.

If you do not see the Cummins part you need, please use our quote request form or call us at 888.687.0539: our knowledgeable inside sales staff will gladly help you.

DS-3801755

PISTON RING SET - 6B5.9 / ISB6.7 / NT855 / QSB5.9

$45.81

Qty:

DS-4089489

PISTON RING SET - N14 / NH / NT

$83.26

Qty:

Ships in 1-2 days

DS-4089810

PISTON RING SET - NH / NT

$60.54

Qty:

Ships in 1-2 days

DS-4089811

PISTON RING SET - NH / NT PREMIUM +

$64.09

Qty:

In Stock

Caterpillar® and all of the Caterpillar® engine models listed on this website are registered trademarks of Caterpillar, Inc. Cummins® and all of the Cummins® engine models listed on this website are registered trademarks of Cummins. Detroit Diesel® and all of the Detroit Diesel® engine models listed on this website are registered trademarks of Daimler AG. John Deere® and all of the John Deere® engine models listed on this website are registered trademarks of John Deere. Allison Transmission® and all of their transmission models listed on this website are registered trademarks of Allison Transmission®. Diesel Parts Direct is not an authorized dealer for Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission. None of the parts beginning with "DS" or "R" are genuine Caterpillar, Cummins, Detroit Diesel, John Deere, or Allison Transmission items.

CID: 86715517

Piston Ring Sets for Cummins NH and NT 855 Engines

DS-3801755

DS-4089489

DS-4089810

DS-4089811

Payment options