Dumper (8451-1) is a Technic LEGO set released in 2003 with 183 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Technic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 53 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
2003 (23 years ago — may be retired)
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Catalog scale
183 parts listed · 53 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
Digital booklet available on this page — use it to verify bag contents
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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.)
~387 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
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Market value
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Building instructions
2 official booklets — read on BrickID
BUILDING INSTRUCTION 8451/1 BUILDING INSTRUCTION 8451/2
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Parts in this set
53 parts · page 1 of 2 · updating…
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Brick Round 2 x 2 with Axle Hole3941 · ×1 · Trans-Yellow -
Plate Round 1 x 1 with Solid Stud6141 · ×2 · Trans-Red -
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)4032a · ×1 · Black -
![Plate Round 2 x 2 with Rounded Bottom [Boat Stud]](https://cdn.rebrickable.com/media/parts/elements/265426.jpg)
Plate Round 2 x 2 with Rounded Bottom [Boat Stud]2654 · ×1 · Black -
Technic Axle 2 Notched32062 · ×7 · Black -
Technic Axle 34519 · ×7 · Light Gray -
Technic Axle 43705 · ×4 · Black -
Technic Axle 532073 · ×9 · Light Gray -
Technic Axle 63706 · ×2 · Black -
Technic Axle and Pin Connector Angled #2 - 180°32034 · ×2 · Yellow -
Technic Axle and Pin Connector Perpendicular6536 · ×7 · Black -
Technic Axle and Pin Connector Perpendicular6536 · ×1 · Light Gray -
Technic Axle and Pin Connector Perpendicular6536 · ×2 · Yellow -
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes42003 · ×2 · Black -
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole32184 · ×1 · Black -
![Technic Axle Connector Ridged [with x Hole x Orientation]](https://cdn.rebrickable.com/media/parts/elements/4113805.jpg)
Technic Axle Connector Ridged [with x Hole x Orientation]6538b · ×2 · Black -
Technic Axle Pin with Friction Ridges Lengthwise43093 · ×2 · Blue -
Technic Axle Pin without Friction Ridges Lengthwise3749 · ×11 · Tan -
Technic Beam 1 x 11 Thick32525 · ×1 · Black -
Technic Beam 1 x 11.5 Double Bent Thick32009 · ×2 · Yellow -
Technic Beam 1 x 2 Thick43857 · ×2 · Black -
Technic Beam 1 x 2 Thin41677 · ×4 · Black -
Technic Beam 1 x 3 Thick32523 · ×8 · Yellow -
Technic Beam 1 x 3 Thin6632 · ×4 · Black -
Technic Beam 1 x 3 Thin6632 · ×4 · Yellow -
Technic Beam 1 x 4 Thin32449 · ×2 · Black -
Technic Beam 1 x 7 Bent (4 - 4) Thick32348 · ×2 · Black -
Technic Beam 1 x 7 Thick32524 · ×2 · Black -
Technic Beam 1 x 9 Bent (6 - 4) Thick6629 · ×4 · Yellow -
Technic Beam 2 x 4 L-Shape Thick32140 · ×4 · Yellow -
Technic Beam 2 x 4 L-Shape Thick32140 · ×1 · Black -
Technic Beam 3 x 3 L-Shape Thin32056 · ×2 · Yellow -
Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin32249 · ×2 · Yellow -
Technic Beam 3 x 5 L-Shape Thick32526 · ×2 · Yellow -
Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin32250 · ×6 · Black -
Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin32250 · ×4 · Yellow -
![Technic Beam Triangle Thin [Type I]](https://cdn.rebrickable.com/media/parts/elements/4142543.jpg)
Technic Beam Triangle Thin [Type I]2905 · ×2 · Black -
Technic Bush3713 · ×5 · Light Gray -
Technic Gear 12 Tooth Double Bevel32270 · ×1 · Light Gray -
![Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening]](https://cdn.rebrickable.com/media/parts/elements/4141455.jpg)
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening]32269 · ×2 · Light Gray -
![Technic Gear 24 Tooth [New Style with Single Axle Hole]](https://cdn.rebrickable.com/media/parts/elements/364802.jpg)
Technic Gear 24 Tooth [New Style with Single Axle Hole]3648b · ×1 · Light Gray -
Technic Panel Fairing # 5 Small Short, Large Hole, Side A32527 · ×1 · Yellow -
Technic Panel Fairing # 6 Small Short, Large Hole, Side B32528 · ×1 · Yellow -
Technic Panel Fairing # 7 Small Long, Large Hole, Side A32534 · ×1 · Yellow -
Technic Panel Fairing # 8 Small Long, Large Hole, Side B32535 · ×1 · Yellow -
Technic Pin 3/432002 · ×6 · Dark Gray -
Technic Pin Double with Axle Hole32138 · ×1 · Black -
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots6558 · ×13 · Black