Five Digits for Efficiency and Organization
The Walker® five-digit numbering system combined with color coded pipe labeling offers you the simplest and most efficient exhaust system parts inventory stocking program available today. The five-digit system dictates where every exhaust system part should be stored, while the pipe color coding aids in inventory storage and order picking. It also complies with Automotive Advertisers and Council recommendations.
First Two Digits
The first two digits of the Walker five-digit part numbering system indicate exactly to which category a particular part number belongs, i.e., a 21000 is a muffler, 35000 numbers are accessories, and 40000/50000/70000 numbers are pipes.
Second Digit
For exhaust and tail pipes, the second digit also indicates the approximate length of a pipe. A 41000/51000/7100 number pipe is no longer than 1' as indicated by a second digit one (1); a 42000/52000/72000 pipe number is longer than 1' but shorter than 2', etc.
Third Digit
The third digit is similarly significant in H and Y pipe part numbers only. For example, a 40200/50200/70200 pipe is no longer than 2' while a 40300/50300/70300 pipe is no longer than 3', etc.
Remaining Digits
The remaining digits aid in the sequential stocking of parts within each category.
Color Coding
Color coding is an additional plus to the Walker five-digit inventory stocking system for pipes. All pipes are labeled with green, yellow, orange, or blue tape. The pipe racking sequence is accomplished according to pipe label color and pipe number.
How it Works
- All H and Y pipes are labeled with green tape, regardless of pipe length (third digit on part number indicates approximate pipe length).
- All exhaust and tail pipes are sequentially labeled with yellow, orange, or blue tape depending on pipe length. For example, all 1', 4' and 7' pipes have yellow labels; 2', 5' and 8' pipes are orange; and all 3', 6' and 9' pipes are coded blue.
Any mistake in stocking is easily noticeable because of size differential of like-colored pipes with varying numbers.
Complete Sequence
The following are the specific categories within the Walker five-digit numbering system:
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