Mobile Site Office (646-2) is a Vehicle LEGO set released in 1971 with 51 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Vehicle sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 24 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1971 (55 years ago — may be retired)
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Catalog scale
51 parts listed · 24 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~129 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
No estimate on BrickID yet
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Parts in this set
24 parts · updating…
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Brick 1 x 13005 · ×2 · Yellow -
Brick 1 x 13005 · ×2 · Red -
Brick 1 x 23004 · ×8 · Red -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support3010a · ×1 · Yellow -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support3010a · ×1 · Blue -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support3010a · ×3 · Red -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Black 'Legoland' Logo Print3010apr0002 · ×2 · Yellow -
Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support with Chrome Silver Car Grill Print3010apr0008 · ×1 · Blue -
Brick 2 x 4 without Cross Supports3001a · ×1 · Trans-Clear -
Brick Round 1 x 1 Solid Stud3062a · ×1 · Yellow -
Brick Round 1 x 1 Solid Stud3062a · ×1 · Black -
Brick Sloped 45° 2 x 2 Double Concave3046a · ×2 · Blue -
![Brick Special 2 x 2 [Red Wheels for Single Tyre]](https://cdn.rebrickable.com/media/parts/ldraw/0/3137c01.png)
Brick Special 2 x 2 [Red Wheels for Single Tyre]3137c01 · ×4 · Black -
Door 1 x 2 x 3 Left with Hollow Studs, Fixed Glass32bc01 · ×1 · White -
Plate 2 x 23022 · ×1 · Black -
Plate 2 x 33021 · ×1 · Black -
Plate 2 x 43020 · ×2 · Black -
Plate 2 x 43020 · ×1 · Blue -
Plate 4 x 83035 · ×2 · Blue -
Plate 4 x 83035 · ×1 · Black -
Plate Special 1 x 4 with Towball3184 · ×1 · Blue -
Plate Special 1 x 4 with Towball Socket, Long, 4 Slots3183b · ×1 · Blue -
Tyre 14 x 4 Smooth Small Single3139 · ×8 · Black -
![Window 1 x 2 x 2 Classic, Extended Lip, Hollow Studs [with Glass]](https://cdn.rebrickable.com/media/parts/ldraw/15/3081bc01.png)
Window 1 x 2 x 2 Classic, Extended Lip, Hollow Studs [with Glass]3081bc01 · ×3 · White