John Deere PIN Decoder: Position-by-Position Guide
Last updated · 8 min read
Bertram Sargla
Founder, Machinetrail
Quick answer
A modern John Deere PIN is 17 characters following ISO 3779. Positions 1–3 identify the plant (WMI), 4–8 the product family and configuration, 9 a check digit, 10 the model-year letter, 11 the sub-plant, and 12–17 the serial sequence. Use the position table below to read your own PIN — or paste it into the Machinetrail lookup for a free decode plus recall, theft, and registry cross-check.
What each position of a John Deere PIN means
John Deere PINs (Product Identification Numbers) on equipment built since approximately 2000 follow the international VIN standard, ISO 3779. The 17 characters split into six functional fields:
| Pos. | Field | Meaning | Example |
|---|---|---|---|
| 1–3 | WMI (World Manufacturer Identifier) | Identifies the manufacturer and the assembly plant that built the machine. John Deere has multiple WMIs depending on plant and product line. | 1RW = Waterloo, IA (large 4WD/8R tractors); RW9 = older Waterloo; 1J0 = Horicon, WI (utility/compact); JJG = combines (Harvester Works, IL); 0K7 = Mannheim, DE; CJ0 = Pune, India. |
| 4–8 | VDS (Vehicle/Product Descriptor Section) | Encodes the product family, model series, and configuration — engine, transmission, cab type, drive layout. The exact mapping is John-Deere-internal and varies by product line. | On a 6R-series tractor the VDS distinguishes 6R 110 / 6R 130 / 6R 140 / 6R 250; on a Gator UTV the VDS distinguishes XUV 825M from XUV 855M. |
| 9 | Check digit | ISO 3779 check digit calculated from the other 16 characters. A wrong check digit means the PIN was mistyped or fabricated. | Numeric 0–9 or letter X (representing value 10). |
| 10 | Model-year code | A single letter or digit indicating the model year. The ISO calendar excludes I, O, Q, U and Z. The cycle repeats every 30 years (so K appears as 1989 and 2019; reading position 11 + serial range disambiguates). | M=2021, N=2022, P=2023, R=2024, S=2025, T=2026, V=2027. |
| 11 | Plant / factory code | Sub-plant code; overlaps logically with the WMI but identifies the specific assembly line within a plant. | On Mannheim-built 6M tractors this is typically a digit 0–9. |
| 12–17 | Serial sequence | Sequential build number for the model year and plant combination. 6 digits, zero-padded. | 012345 = the 12,345th unit off that model-year line. |
Model-year letter table (position 10)
ISO 3779 uses single characters for model year, skipping I, O, Q, U, and Z (to avoid confusion with digits and other letters). The letter cycle repeats every 30 years; reading the WMI and the serial-sequence range will disambiguate which decade you're in.
| Letter | Model year (2010s) | Model year (2040s) |
|---|---|---|
| A | 2010 | 2040 |
| B | 2011 | 2041 |
| C | 2012 | 2042 |
| D | 2013 | 2043 |
| E | 2014 | 2044 |
| F | 2015 | 2045 |
| G | 2016 | 2046 |
| H | 2017 | 2047 |
| J | 2018 | 2048 |
| K | 2019 | 2049 |
| L | 2020 | 2050 |
| M | 2021 | — |
| N | 2022 | — |
| P | 2023 | — |
| R | 2024 | — |
| S | 2025 | — |
| T | 2026 | — |
| V | 2027 | — |
| W | 2028 | — |
| X | 2029 | — |
| Y | 2030 | — |
Earlier letters (A–Y, 1–9) are reused on the same 30-year cycle. Letters skipped throughout: I, O, Q, U, Z.
Common John Deere WMI codes (positions 1–3)
- 1RW — Waterloo, Iowa, USA. Large 4WD and row-crop tractors (8R, 9R, 9RX, 9RT). Current-format Waterloo WMI used since approximately 2008.
- RW9 — Older Waterloo format, used pre-2008. Same plant.
- 1J0 — Horicon, Wisconsin, USA. Compact utility tractors, lawn and garden equipment, small commercial mowers.
- 0K7 — Mannheim, Germany. The 5-, 6-, and 7-series tractors and the European-built mid-range range.
- JJG — Harvester Works, East Moline, Illinois, USA. S-series and X-series combines.
- CJ0 — Pune, India. Small-utility tractors built for Asian and export markets.
- 1L0 / 1HM / 2BJ — various US plants for self-propelled sprayers, planters, and specialty equipment.
Where to find the PIN plate on a John Deere tractor
- Right-hand frame rail under the cab. The factory PIN plate is screwed or riveted to the right-hand chassis rail near the front of the cab on most utility, row-crop, and large 4WD tractors. The plate carries the full 17-character PIN plus model designation.
- Engraved into the frame. John Deere also stamps the PIN directly into the chassis frame casting (usually on the right-hand front frame) so that even if the plate is removed or damaged, the chassis-stamped PIN remains. Always cross-check the plate against the engraving — a mismatch is a primary stolen-equipment signal.
- Engine serial number (separate).Stamped on the engine block, typically near the injection pump or on the side of the cylinder head. This identifies the engine, not the chassis. On a re-engined tractor it will not match the factory chassis PIN — that's normal but worth noting.
- Operator's manual + dealer service file. The PIN appears on the title page of the manual delivered with the tractor and in any authorized-dealer service-history record.
- Compact / lawn equipment exception. On Horicon-built compact tractors and Gators, the PIN plate is often under the operator seat or on the rear frame rather than the right-hand front rail.
What about pre-2000 John Deere serial numbers?
John Deere equipment built before the ISO 3779 17-character format was fully adopted uses OEM-specific serial-number conventions. These vary by model line and decade:
- Two-cylinder era (pre-1960): Sequential serial numbers reset annually for each model. The serial-number break tables (e.g. 1947 Model A starts at 583000) are well-documented in the John Deere two-cylinder community.
- New Generation through 30/40/50 series (1960–1992): Sequential serials with a transmission-code prefix on later builds. The 4020, 4030, 4040, 4050, 4055, 4255 and similar mid-frame tractors have published serial breaks for each model year.
- 1992–2000 transition era:Some models use the new 17-character PIN format from launch, others continued with shorter legacy serials. Check the chassis plate and the operator's manual together.
For pre-2000 equipment, the position-by-position decoding above does not apply. The Machinetrail lookup will still attempt to resolve the serial against published John Deere model-year break tables and known auction records, but the confidence score on the decode will be lower and that's flagged before purchase.
What to do once you've decoded the PIN
A correct decode is just the structural-validity check — it confirms the PIN is well-formed and resolves to a real configuration. The pre-purchase value comes from cross-referencing that PIN against three failure-mode databases:
- Stolen-equipment registries. NER (US), TER-Europe (UK/EU), and the 14 European registries Machinetrail queries in a single lookup. A stolen tractor will be reclaimed by police regardless of how clean the paperwork looks.
- Open safety recalls. EU Safety Gate, member-state agencies (Bundesnetzagentur, RDW, Traficom), and OEM recall feeds. Open recalls on hydraulic, brake, or PTO systems are a measurable safety risk and a re-sale-value problem.
- Auction comparables and market value. What did similar machines actually sell for in the last 12 months? Decoded PIN + model + year + hours + region returns the range of recent sale prices.
All three are bundled into the €19.99 Machinetrail standard report; the free preview surfaces the recall count, top-5 known issues, and two recent auction prices.
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Frequently asked questions
Where is the PIN located on a John Deere tractor?
Three places: (1) the chassis-plate sticker, typically on the cab pillar or on the right-hand frame rail near the front axle; (2) stamped into the chassis frame itself, usually on the right side of the front frame casting or on the transmission housing; and (3) the engine serial number, which is separate from the chassis PIN and stamped on the engine block. Always cross-check the chassis-plate PIN against the engraved frame PIN — mismatched or restamped plates are a primary stolen-equipment signal.
Are John Deere PINs the same as VINs?
On modern equipment built since approximately 2000, John Deere PINs follow the same 17-character ISO 3779 format used for VINs. The terms are functionally interchangeable for that era. On pre-2000 John Deere equipment, the serial number is shorter and uses an OEM-specific format that varies by model line; those legacy serials cannot be decoded with the position-by-position table on this page.
How do I tell what year my John Deere tractor was built?
On a 17-character PIN, position 10 is the model-year code. Use the table above (M=2021, N=2022, P=2023, R=2024, etc.). Note that ISO model-year letters skip I, O, Q, U and Z to avoid digit confusion, and the cycle repeats every 30 years — so K could mean 1989 or 2019. The serial-sequence range (positions 12–17) and the WMI together disambiguate. On pre-2000 equipment, refer to the model-line serial-break list rather than a single position.
What does the 1RW prefix on a John Deere PIN mean?
1RW is the World Manufacturer Identifier (WMI) for John Deere's Waterloo, Iowa assembly plant — the plant that builds large 4WD and 8R/9R-series row-crop tractors. RW9 is the older Waterloo format used through approximately 2008. Other common John Deere WMIs: 1J0 (Horicon, WI — utility tractors and compact equipment), 0K7 (Mannheim, Germany — 5/6/7-series), JJG (Harvester Works, East Moline, IL — combines), CJ0 (Pune, India — small-utility and export builds).
Can I check a John Deere PIN to see if the tractor is stolen?
Yes. Cross-check the PIN against multiple registries — not just one country. The National Equipment Register (NER.net) covers US-reported theft; TER-Europe covers UK/EU equipment; Machinetrail queries 14 European registries plus a stolen-equipment dataset in a single lookup. John Deere itself does not publish a public stolen-equipment database, though authorized dealers can in some cases verify whether a specific PIN has been flagged through the JDLink / dealer-channel network.
Why doesn't my old John Deere serial number have 17 characters?
Pre-2000 John Deere equipment uses OEM-specific serial-number formats that pre-date the ISO 3779 17-character VIN/PIN standard. These older serials are typically 5–8 characters and follow a model-line convention rather than a positional encoding. Decoding them requires the John Deere model-line serial-break tables, which are sometimes printed in the operator's manual or on the chassis plate next to the serial. Some early-1990s machines straddle the transition and have both formats present.
Is the John Deere PIN on the engine the same as the chassis PIN?
No. John Deere assigns a separate engine serial number (stamped on the engine block — typically near the injection pump or on the side of the cylinder head) that identifies the specific engine, distinct from the chassis PIN that identifies the whole machine. On a re-powered tractor (a tractor that has had its engine swapped during a major rebuild), the engine serial will not match the chassis-PIN-implied factory engine. This is normal and not a fraud signal on its own — but the engine serial should appear in the maintenance history.
How does a Machinetrail John Deere check use the PIN?
Enter the 17-character PIN (or older legacy serial) on the Machinetrail homepage. The free preview decodes the PIN structurally, returns make / model / year / plant, surfaces the recall count and the top-5 known issues for that model, and shows two recent auction comparables. The €19.99 full report adds the complete recall list, full known-issues list with severity, complete auction history, detailed reliability score, full specifications, and market-value range — all keyed to the PIN-resolved canonical machine.