Mega Core Magnetizer (6989-1) is a M:Tron LEGO set released in 1990 with 506 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing M:Tron sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 3 minifigures and 154 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
1990 (36 years ago — may be retired)
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Catalog scale
506 parts listed · 154 inventory lines tracked
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Minifigures
3 in this set's inventory — verify completeness when buying used
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Build complexity
Large set — expect sticker sheets or multiple subassemblies; inspect photos closely
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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.)
~850 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
Related sets in this theme
Market value
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Minifigures in Mega Core Magnetizer
Parts in this set
154 parts · page 1 of 4 · updating…
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Antenna 8H Whip2569 · ×1 · Trans-Neon Green -
![Bar 1 x 3 [Clip / Anti-Stud]](https://cdn.rebrickable.com/media/parts/elements/4141579.jpg)
Bar 1 x 3 [Clip / Anti-Stud]4735 · ×2 · Light Gray -
![Bar 1 x 6 [Open Studs]](https://cdn.rebrickable.com/media/parts/ldraw/0/4873.png)
Bar 1 x 6 [Open Studs]4873 · ×2 · Black -
![Box 2 x 2 x 2 [Solid Studs]](https://cdn.rebrickable.com/media/parts/ldraw/4/4345a.png)
Box 2 x 2 x 2 [Solid Studs]4345a · ×1 · Red -
Box 2 x 2 x 2 Door with Slot and Black/Red MTron Print4346pr0004 · ×1 · Light Gray -
Bracket 2 x 2 - 1 x 42422 · ×1 · Red -
Bracket 2 x 2 - 2 x 23956 · ×2 · Black -
![Bracket 3 x 2 - 2 x 2 [aka Space Seat]](https://cdn.rebrickable.com/media/parts/elements/459826.jpg)
Bracket 3 x 2 - 2 x 2 [aka Space Seat]4598 · ×1 · Black -
Brick 1 x 13005 · ×4 · Black -
Brick 1 x 13005 · ×2 · Red -
Brick 1 x 162465 · ×2 · Black -
Brick 1 x 162465 · ×2 · Red -
Brick 1 x 23004 · ×3 · Red -
Brick 1 x 23004 · ×4 · Black -
Brick 1 x 33622 · ×2 · Red -
Brick 1 x 43010 · ×7 · Red -
Brick 1 x 63009 · ×1 · Black -
Brick 1 x 63009 · ×9 · Red -
Brick 2 x 103006 · ×1 · Red -
Brick 2 x 2 Corner2357 · ×2 · Red -
Brick 2 x 33002 · ×1 · Red -
Brick 2 x 43001 · ×1 · Red -
Brick 2 x 62456 · ×2 · Red -
Brick Round 1 x 1 Open Stud3062b · ×4 · Red -
Brick Round 1 x 1 with Fins, Open Stud4588 · ×1 · Trans-Neon Green -
Brick Round 2 x 2 with Axle Hole3941 · ×6 · Red -
Brick Round 2 x 2 x 2 with Axle Hole and Fins4591 · ×2 · Light Gray -
Brick Sloped 33° 3 x 14286 · ×10 · Red -
Brick Sloped 33° 3 x 2 with MTron Logo Print3298pr0026 · ×2 · Red -
Brick Sloped 45° 2 x 1 with Bottom Pin3040b · ×2 · Red -
Brick Sloped 45° 2 x 23039 · ×1 · Red -
Brick Sloped Inverted 33° 5 x 6 x 24228 · ×2 · Red -
Brick Sloped Inverted 34° 3 x 1 without Internal Stopper4287a · ×6 · Black -
Brick Sloped Inverted 45° 2 x 13665 · ×1 · Black -
![Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]](https://cdn.rebrickable.com/media/parts/elements/366021.jpg)
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]3660 · ×2 · Red -
Brick Sloped Inverted 45° 4 x 2 Double with 2 x 2 Recessed4871 · ×3 · Red -
Brick Sloped Inverted 45° 4 x 4 Double with 4 x 2 Recessed4854 · ×1 · Red -
Brick Special 1 x 1 with 3 Speakers / Loudspeakers / Space Positioning Rockets3963 · ×2 · Black -
Brick Special 1 x 1 with Headlight4070 · ×4 · Red -
Brick Special 1 x 1 with Headlight4070 · ×2 · Black -
Cockpit 6 x 6 x 1 Cabin Base4597 · ×1 · Black -
![Cone 1 x 1 [No Top Groove]](https://cdn.rebrickable.com/media/parts/elements/618849.jpg)
Cone 1 x 1 [No Top Groove]4589 · ×10 · Trans-Neon Green -
![Dish 2 x 2 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/3006349.jpg)
Dish 2 x 2 Inverted [Radar]4740 · ×1 · Trans-Neon Green -
![Dish 8 x 8 Inverted [Radar], Solid Studs, Rounded Anti-stud Underside](https://cdn.rebrickable.com/media/parts/elements/4626901.jpg)
Dish 8 x 8 Inverted [Radar], Solid Studs, Rounded Anti-stud Underside3961 · ×1 · Black -
![Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]](https://cdn.rebrickable.com/media/parts/elements/347526.jpg)
Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]3475b · ×1 · Black -
![Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]](https://cdn.rebrickable.com/media/parts/ldraw/7/3475b.png)
Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders]3475b · ×2 · Light Gray -
![Equipment Radio [Compact Handle]](https://cdn.rebrickable.com/media/parts/ldraw/0/3962a.png)
Equipment Radio [Compact Handle]3962a · ×2 · Black -
Hinge Bar with 3 Fingers and End Stud (Control Lever)2433 · ×2 · Black