KitchenAid Mixer Serial Number Age Decoder

Decode the documented nine-character KitchenAid stand-mixer serial format into candidate year and production-week ranges without hiding era ambiguity.

Decode the label before you date the mixer

Unplug the mixer, place it on a towel, and copy the serial and model from the label under the base. This decoder keeps the manual's 30-year reuse cycle visible.

Nine-character serial number

Model number (recommended)

Likely ownership / design era

This is a format decoder, not an authentication, recall, warranty, parts-compatibility, or electrical-safety check. Do not publish one candidate year until the model and physical era agree.

Format parsed; one year fits the selected era

Candidate build date: 2020, week 04

Normalized serial: WX0404154

Division code: W
Year code: X
Week code: 04
Sequence: 04154

Candidate year	Production week	Calendar range
2020	04	Jan 27, 2020–Feb 2, 2020

Verification notes

KitchenAid says serial formats vary by production era and recommends support for the most accurate age estimate.
A decoded production week does not authenticate the mixer or prove that its motor, transmission, bowl, or attachments are original to it.
Confirm that model KSM150 was sold in the candidate year before using the date in a listing.

What the nine characters mean

1Manufacturing division. The first character identifies the manufacturing division in the documented format.
2Year code. One number or permitted letter maps to a year and repeats every 30 years.
3–4Week code. Two digits represent week 00 through 52; week 01 begins with the first Monday of the year.
5–9Sequence. The remaining five digits are an incrementing serial sequence, not a model or value code.

From date lead to resale decision

1Photograph the complete label and mixer before cleaning or turning it on.
2Confirm the decoded candidate year against the exact model, trim, controls, bowl-lift or tilt-head design, and dated documents.
3Search CPSC recalls and KitchenAid support with the exact model and serial.
4Test only with a safe, model-appropriate inspection process; disclose noise, leakage, speed, bowl, beater, and attachment condition.
5Compare sold mixers by exact model, working state, condition, included bowl and tools, and shipping terms.

Build a sold-comp search Inspect a used mixer

Source ledger and limits

The calculation is local and sends no serial number to a server. Sources were checked 2026-08-29; confirm volatile support and recall information again before a transaction.

KitchenAid Stand Mixer Service Manual, LIT4177310-C (2005)Page 40 documents the nine-character structure, 30-year year-code cycle, week 00–52 rule, and sequence field.KitchenAid model and serial locationOfficial instructions place the label under the mixer base and recommend using a towel or soft surface when turning the mixer over.KitchenAid old vs. new stand mixersOfficial era guidance says serial formats vary and KitchenAid support provides the most accurate age estimate.U.S. Consumer Product Safety Commission recallsSearch the exact mixer model before purchase or resale; an age result is not a recall check.

KitchenAid mixer age FAQ

Can a KitchenAid mixer serial number give an exact year?

Sometimes. The documented year code repeats every 30 years, so model, physical design, ownership records, or KitchenAid support may be needed to select one candidate year.

Where is the serial number on a KitchenAid stand mixer?

KitchenAid says the model and serial sticker is underneath the base. Unplug the mixer and place it on a towel or soft surface before carefully turning it over.