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Pneumatic Hose Connector with Axle Connector
Part

Pneumatic Hose Connector with Axle Connector

99021

Pneumatics

Appears in 260 official sets

Catalog rarity

Common

Used in 260 official sets — a staple element in many builds. Available in 5 catalog colors.

Based on official set inventories in our catalog — not market price or production volume.

Best sets to source this part

Smallest official sets that include this element — useful when you only need one piece, not the whole theme.

Pneumatic Hose Connector with Axle Connector (part 99021) is a Pneumatics used in 260 official LEGO sets. Scan or search to authenticate loose parts and check market value. Open the parent-set list to see which themes and years used this mold — essential when a common shape appears in a rare color or print.

  • → Category: Pneumatics
  • → Appears in 260 official sets
  • → Scan a photo to identify this part instantly
  • → Compare market prices

Market value

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Color variants

Blue Dark Bluish Gray Dark Brown White Bright Green

Sets containing this part

291 sets · page 11 of 13