Cummins Engines

Engine

Plug size

Link

5.9L CPL2071, 8.3L 
Most ISB , ISC , ISL , 6B , 6C, QSL, ISLG, ISQ, B&C Series, 4BT3.9, 6BT5.9, 8.3L, QSC, 355
Pre 1995 , Dodge 5.9L Diesel 2003-2006 Dodge 5.9L Diesel Dodge 6.7L Diesel, QSB (bottom)

M18X1.5-T14

 

ISX, QSX , Sig. 600 , QST30, N15, X15

M27X2.0-T12 + O-RING

ISM , QSM , L10 , M11 , N14 , 444, 855, QSK50 , NTC , NT , NH, 350NT

1″-18-UNS-T12

Some, ISB , ISC , ISL , 6B , 6C, QSL
Other 6.7L Diesel, 3.3L , 4.5L ,QSB (side)

M22X1.5-T10

VT504 , 555 , 378V6, QSK

3/4″-16-UNF-T10

1995-2002 Dodge 5.9L Diesel

M22X1.5-LB-T15

KT1150 , QSKT19, KTTA19

1 1/16″-12-UNF-T15

A2000 , A2300

M14X1.5-T10

QSK60, QSK45

M42X2.0-T12