HOW TO USE THIS MPC

PARTS DATA

GROUPING
The Standard GM Grouping System has been used throughtout this catalog. All group numbers are shown in numerical sequence. Headings are listed in alphabetical order within each group.

PART NUMBERS
Right hand and left hand part numbers are often listed on one line, if the model application and description are identical. For example:

3.706 ― SUPPORT, TAIL PIPE
1	399550	399551	1968-69 344 w/DUAL EXHAUST

In such cases, the first number on the line always refers to the right hand part and the other number refers to the left hand part.

SUPERCEDED NUMBERS
The number in brackets at the end of the description line (if included) refers to the old or superseded part. For example:

3.708 ― U BOLT, TAIL PIPE and MUFFLER TO HANGER
AR	3719496	1966 ALL 6 CYL - INCLUDES CLAMP 1-7/8 IN [SUP 381782]

The old and new numbers are not always fully interchangeable. Rework is sometimes required. Be sure to check model applications.

EXPORT
Items peculiar to export vehicles are designated by an X. For example:

0.033 ― BLOCK AND PISTON ASSEMBLY /WITH RINGS, CRANK AND CAM BEARINGS, LESS FLYWHEEL HOUSING/
1 X	325180 $	1968-71 ALL 6 CYL - EXPORT ONLY SUP 3930970

NEW PARTS
All new part numbers are identified in the data section by a special symbol:

* (Preliminary Catalog)
@ (Master Catalog)

$ (NEW PARTS REVISION #1)
% (NEW PARTS REVISION #2)

	HOW TO FIND THE PART YOU NEED
		For a quick way to locate the exact application of the part you are looking for, be sure to use the indexes and illustrations. They will be helpful in several ways: If you know the part name only — refer to Alphabetic Index, note the group number, then go to that group in the data section. If you know the part number only — refer to the Numerical Index, note the group, and go to that group in the data section. If you know the position only of the part on the vehicle — refer to the Illustration Index for overall group, then to the illustrations in that group for a specific group number to turn to in the data section.

	MISC. INFORMATION
		Illustrations often contain references to multiple-use small parts such as screws, bolts, nuts, etc., in groups 8.900 through 8.991. These are listed separately in the 907 GM STANDARD STOCK PARTS CATALOGUE, and can be located by group or by description and size (not included here). Equipment-Type Accessory Packages and the groups in which they appear, are listed on the first page of the Alphabetic Index. For further information on Custom Accessories refer to the Accessories Catalogue (not included here). Each year a limited volume of vehicles is sold with Special Equipment other than regular production options. For service parts prior to 1967 refer to C.S.L. (Canadian Special List) Catalogue, and for subsequent years refer to C.O.P.O. (Central Ofiice Production Order) Catalogue (not included here). A complete list of abbreviations used in this catalog can be found here.