Engine Identification Numbers

Following is an explanation of data found on the Engine Serial Number Pad

1.7L ENGINE SERIAL NUMBER PARTS IDENTIFICATION CODE DEFINED:

A quantity of engine may contain undersize Crankshaft Bearings Engines built with undersize Bearings have a circle around the last digit of the Engine Sequence Number. Undersize Rod or Main Bearing will always be .25 mm U/S (approximately .010" U/S) and will have 1 or more of the following letters on the Crankshaft between the #1 main and Rod journals:

R = All Rod Bearings are .25 mm U/S
M = All Main Bearings are .25 mm U/S

RM = All rod and Main Bearings are .25 mm U/S Bearing shells will be stamped .25 U/S

2.2L, 225 & 318 ENGINE SERIAL NUMBER & PARTS IDENTIFICATION CODES & SYMBOLS DEFINED:

A = Oversize Cylinder Bore E = Cast Crankshaft H = Standard 4 Bbl.

HP = High Performance K = Taluca Engine Plant LC = Low Compression

M = Mound Road Engine
PC = Passenger Car Engine
R = Passenger Car Engine
S = Special Engine

T = Trenton Engine/Truck
W = Windsor Engine
X = O/S Valve Guide

DIAMOND ( ) = Tappets
MALTESE CROSS (+) = 001 U/S Crankshaft
x followed by MALTESE CROSS (x +) = .010 U/S Crankshaft

Engine Number Location Displacement Serial Number Pad Located

1.6L
1.7L Above Oil Pump
2.2L Rear Face of Block, below Cylinder Head
2.6L (G54B) Right Upper front corner of Block
225 Right Side of Block below #1 Spark Plug
318 Left Front of Block below Cylinder Head

CAUTION: Replacement Engine Assemblies are furnished with blank engine number pads. Dealers are governed by state and local regulations regarding the affixing of engine numbers to these engines. In states where license fees are based on displacement or taxable horsepower it will be necessary to change the vehicle registration only if the replacement engine differs from the one it replaces.