Caterpillar 3406E, C15 Spacer Plate, .003 Undersized, 1389381

Fits Cat 3406E, C15, C15 ACERT, C16, C18 Engines
Reduced Thickness. This Spacer Plate is .003" thinner than the stock spacer plate. The thickness of this spacer plate is 0.335"
Commonly used on engines with the following Serial Prefixes: 1LW, 1MM, 2WS, 5EK, 6TS, 6NZ, B5R, EGH, JEP, MBN, RKS, SDP, 5DS, 9NZ, KRA, TRB, BXS, MXS, NXS
Please note: It is recommended to replace the spacer plate on this particular application whenever the cylinder head is replaced. 
OEM Cross References: 138-9381, 1389381, 424-7052, 4247052