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:
Cartonized
14610-16799
Catalytic Converters
17200-17799
Turbo Performance Product (includes Super Turbo, Ultra-Flo Mufflers and Kits)
17160-17199, 18100-18180
Universal Mufflers
18181-18499, 18550-18599, 18800- 18992, 28000-
Direct Fit Mufflers
21100-22990
Premium Mufflers (up to 40" in length)
22800-22999
Premium Mufflers (over 40" in length)
24000-24499
Glasspacks
28000-29999
Chrome Stack Pipes, Muffler Shields, Cages, Items that require special handling
31000-31999
Gaskets and Flanges
33000-34299
Bulk Clamps
35000-35999, 36101-36199
Clamps, Hangers, Brackets, Insulators, Straps and Shields
36000-36100, 36200-36999
Promotional Items
37000-37999
Jobber Racking
92000-93999
Ultra Universal Converters
Uncartonized
40000-40026, 50001-50015
Flexible Tubing
40050-40999, 50050-50999, 70000-70999
Premium Mufflers
40200-40999, 50200-50999, 70200-70999
H&Y Pipes and Difficult to Stock Pipes
41000-49999, 51000-59999, 70200-70999
Exhaust and Tail Pipes, Straight Tubing, and Muffler/Pipe Welded Assemblies
CalCat Converters
80000-81499
CalCat Non-OBDII Universal and Direct-Fit Converters
81500-84999
CalCat OBDII Universal and Direct-Fit Converters
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