# Tractor #851 price

The value for "Tractor #851" depends heavily on whether you are referring to the LEGO set or a real tractor part. If you mean the LEGO set, the catalog shows the "LEGO Tractor (851-1) (Expert Builder)" is unpriced in the current view, but the "Tractor #851 — LEGO Technic Set Value (LEGO Technic)" is listed with a used value of $132.13. If you are looking for a real tractor part compatible with a Ford Tractor 851, the catalog shows several options: a Starter is listed at $125.74 new [2], an Alternator Conversion Kit is $164.95 new [3], a Light Switch is $13.29 new [4], a Premium Starter is $106 new [5], another 6V Starter is $106 new [7], and a Water Pump is $64.99 new [6].

## Items referenced

| Item | Used | New | Page | Sold comps |
| --- | --- | --- | --- | --- |
| Tractor #851 — LEGO Technic Set Value | $132.13 | $633.16 | [view](https://junkpal.ai/products/tractor-851-lego-technic-lego) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DTractor%2520%2523851%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| RAREELECTRICAL New Starter Compatible with Ford Tractor 740 801 841 850 851 860 881 FAC-11002B FAC-11002G | — | $125.74 | [view](https://junkpal.ai/products/rareelectrical-new-starter-compatible-with-ford-tractor-740-801-841-85-b008y3p5jg) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DRAREELECTRICAL%2520New%2520Starter%2520Compatible%2520with%2520Ford%2520Tractor%2520740%2520801%2520841%2520850%2520851%2520860%2520881%2520FAC-11002B%2520FAC-11002G%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| Rareelectrical NEW ALTERNATOR CONVERSION KIT COMPATIBLE WITH FORD NAA TRACTOR GENERATOR 851 860 881 901 960 | — | $164.95 | [view](https://junkpal.ai/products/rareelectrical-new-alternator-conversion-kit-compatible-with-ford-naa--b013sg7pri) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DRareelectrical%2520NEW%2520ALTERNATOR%2520CONVERSION%2520KIT%2520COMPATIBLE%2520WITH%2520FORD%2520NAA%2520TRACTOR%2520GENERATOR%2520851%2520860%2520881%2520901%2520960%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| Arko Tractor Parts Light Switch for Ford Tractors NAA 8N 601 611 621 631 641 651 661 671 681 801 811 821 841 851 861 871 8N11654B 87518815 | — | $13.29 | [view](https://junkpal.ai/products/arko-tractor-parts-light-switch-for-ford-tractors-naa-8n-601-611-621-6-b08lmty7xy) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DArko%2520Tractor%2520Parts%2520Light%2520Switch%2520for%2520Ford%2520Tractors%2520NAA%25208N%2520601%2520611%2520621%2520631%2520641%2520651%2520661%2520671%2520681%2520801%2520811%2520821%2520841%2520851%2520861%2520871%25208N11654B%252087518815%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| New Premium 6V Starter Compatible with Ford F-100 F-250 F-350 3.9L 1954-1955 Ford Tractor 501 601 640 641 651 660 681 701 740 801 841 850 851 860 901 960 FAC-11002 FAC-11002G B5C-11002A C3NF-11001-A | — | $106 | [view](https://junkpal.ai/products/new-premium-6v-starter-compatible-with-ford-f-100-f-250-f-350-3-9l-195-b07cqrrmtj) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DNew%2520Premium%25206V%2520Starter%2520Compatible%2520with%2520Ford%2520F-100%2520F-250%2520F-350%25203.9L%25201954-1955%2520Ford%2520Tractor%2520501%2520601%2520640%2520641%2520651%2520660%2520681%2520701%2520740%2520801%2520841%2520850%2520851%2520860%2520901%2520960%2520FAC-11002%2520FAC-11002G%2520B5C-11002A%2520C3NF-11001-A%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| Water Pump Ford 2000 4000 501 600 601 650 700 701 740 800 801 861 900 901 630 640 840 850 860 950 960 531 540 541 621 631 641 651 661 681 741 821 841 851 871 881 941 951 961 971 981 Tractor | — | $64.99 | [view](https://junkpal.ai/products/water-pump-ford-2000-4000-501-600-601-650-700-701-740-800-801-861-900--b00crgln2o) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DWater%2520Pump%2520Ford%25202000%25204000%2520501%2520600%2520601%2520650%2520700%2520701%2520740%2520800%2520801%2520861%2520900%2520901%2520630%2520640%2520840%2520850%2520860%2520950%2520960%2520531%2520540%2520541%2520621%2520631%2520641%2520651%2520661%2520681%2520741%2520821%2520841%2520851%2520871%2520881%2520941%2520951%2520961%2520971%2520981%2520Tractor%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| New 6V Starter Compatible with Ford Ag Tractors 501 601 640 641 651 660 681 701 740 801 841 850 851 860 901 960 New Holland 4030 4031 4040 4130 4131 4140 1954-1968 B5C-11002A C3NF-11001-A C3NF-11002-D | — | $106 | [view](https://junkpal.ai/products/new-6v-starter-compatible-with-ford-ag-tractors-501-601-640-641-651-66-b07cq93q9g) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DNew%25206V%2520Starter%2520Compatible%2520with%2520Ford%2520Ag%2520Tractors%2520501%2520601%2520640%2520641%2520651%2520660%2520681%2520701%2520740%2520801%2520841%2520850%2520851%2520860%2520901%2520960%2520New%2520Holland%25204030%25204031%25204040%25204130%25204131%25204140%25201954-1968%2520B5C-11002A%2520C3NF-11001-A%2520C3NF-11002-D%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |
| LEGO Tractor (851-1) | — | — | [view](https://junkpal.ai/products/lego-851-1) | [eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DLEGO%2520Tractor%2520(851-1)%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-answer-sold&p=md-answer-sold) |

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_Updated 2026-07-18._

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Source: [https://junkpal.ai/answers/tractor-851-price](https://junkpal.ai/answers/tractor-851-price) · JunkPal price guide (junkpal.ai)
Values are medians of real closed eBay sales — estimates for reference, not offers or appraisals.
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