Pump Works
Bowser drinking water to flood the Pump Works, allowing Mario and Luigi to swim
First appearance	Mario & Luigi: Bowser's Inside Story (2009)
Latest appearance	Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey (2018)
Greater location	Bowser's body
Inhabitants	Bubble Bloopers, Chombones, Dried Bloopers, Emoglobins, Goombules, Protobatters, Spike Blops

Not to be confused with Pipe Works.

This article is about the location. For Greninja's up special move, see List of fighters debuting in Super Smash Bros. for Nintendo 3DS / Wii U § Greninja.

The exit of Pump Works, which can be opened with the Stingler

Pump Works, also known as Hydro Pump^[1], is a location inside Bowser's body in Mario & Luigi: Bowser's Inside Story and its 3DS remake. This area appears to be in Bowser's esophagus. It is accessible to Mario and Luigi when Bowser drinks water from the Sea Pipe Statue in Plack Beach. Drinking water as Bowser floods the area, which allows Mario and Luigi to swim and certain objects to float. Once he stops drinking, the water will drain from the area. Mario and Luigi travel here to search for Princess Peach, but instead they find Toadsworth. This area also features ten Attack Pieces that, once gathered, allow Mario and Luigi to use the Fire Flower Special Attack. Also, it has an obstacle (a cannon that launches food for a giant Chombone) that is required to obtain the Stingler, an item that can be used to open the exit door resembling DNAs and access other areas of Bowser's body.

The remake

The area can be roughly divided into three parts. The first part starts from the entrance and consists of three chunks in a row. Mario and Luigi must clear the obstacles of this part to reach the orange pipe in the last chunk, which leads to the second part. The second part starts with a DNA-like door, which the bros. must first bypass and clear the rest of this part to find the Stingler, meeting Toadsworth and learning the Mini-Mario technique on the way. Once the bros. use Stingler on the DNA-like door, they can exit the area and unlock other areas of Bowser's body including Flame Pipe (their next area to check), Nerve Cluster, Airway, Chest Station, Nose Deck and Pipe Yard. Later in the game, after Mario and Luigi learn the Drill Bros. move in the Energy Hold, they can tunnel underground in the first chunk of the first area (the entrance) and go right to access the third part, where they can find ? Blocks containing items like Super Mushrooms, Star Candy, Guardian Socks and 1-Up Deluxes.

Enemies

• Bone Thwomps (obstacle)
• Goombules
• Spike Blops
• Bubble Bloopers
• Dried Bloopers
• Protobatters
• Chombones (obstacle)

Items

Field

Item	Location	Image ()	Image ()
Stingler	In the fourth scene in the DNA door area. Required to progress.

Blocks

Item	Location	Image ()	Image ()
3x 3 Mushrooms and Retry Clock 3x 3 Mushrooms and Star Candy	In the second scene, in the upper-western part. In the remake, the right one is move to the upper-eastern part.
Fire Flower Attack Piece	In the scene accessed by a orange pipe in the second scene. This ? Block is one of the special ? Blocks: After the initial ? Block has been struck, it shows a pattern of 5 M and L Blocks, then they turn to 5 ? Blocks and must be struck in the same pattern to get the content hidden in the initial ? Block.
Fire Flower Attack Piece	In the third scene, near the entrance.
10x 10 Coins and Mushroom 2x Parry Glasses and 2 Syrup Jars	Same scene, near the exit.
10x 10 Coins and Five Coin 10x 10x 10 Coins (both)	Back in the second scene, in the lower part, in the east.
1-Up Mushroom	Same scene, left of the previous two.
2x Fire Flower Attack Piece (both)	In the fifth scene, in the alcove near the entrance
Fire Flower Attack Piece	Same scene, near the exit.
Fire Flower Attack Piece	In the eight scene, near the entrance.
Five Coin 2x 2 Mushrooms	Same scene, in the northeastern corner
Syrup Jar 2x 2 Syrup Jars	In the ninth scene, near the entrance.
Fire Flower Attack Piece	Same scene, near the exit. This ? Block is one of the special ? Blocks: After the initial ? Block has been struck, it shows a pattern of 5 M and L Blocks, then they turn to 5 ? Blocks and must be struck in the same pattern to get the content hidden in the initial ? Block.
Picnic Wear Leisure Wear	In the tenth scene, found in the southeastern corner, accessible only with Mini-Mario.
Nut	Same scene, northeast of the Save Block.
Fire Flower Attack Piece	In the eleventh scene, in the southwestern corner.
10x 10 Coins and Mushroom 2x 10-Coin and 2 Syrup Jars	Same scene, in the north.
Fire Flower Attack Piece	In the twelfth scene, in the southeastern corner.
Fire Flower Attack Piece	Back in the seventh scene, near the entrance of the lower part.
10x 10 Coins	Back in the sixth scene, in the lower area accessible only with Mini-Mario.
Fighter Wear	Same scene, in the upper area accessible only with Mini-Mario from the fifth scene.
12x 12 Coins 12x 12 10-Coins	NOTE: Following six blocks can be accessed only after learning Body Slam in Tower of Yikk. In the first scene of the area accessible by Drill Bros., near the entrance
2x 2 Super Mushrooms	Same scene, near the upper exit.
100-Coin	In the second scene of the area accessible by Drill. Bros, at the end of the upper part.
3x 3 1-Up Deluxes	In the third scene of the area accessible by Drill. Bros, at the end.
Guardian Socks and Star Candy	In the scene after the pipe maze scene (accessed by a orange pipe from the second scene), at the end.

Remake only

Item	Location	Image
10x 10 Coins	In the fifth scene, near the upper exit.

Map

Area map

Prima Official Game Guide description

• "Bowser may have defeated the Sea Pipe Statue, but there is more work to be done to get the Koopa King off the beach. Bowser needs his Fire Breath back, but that's an internal issue—literally. Mario and Luigi must dive into Bowser's Pump Works and swim their way to the source of Bowser's Fire Breath, Getting through the bad boy's insides is never that simple, though. The Bros. must figure out how to best direct Bowser to use the water from the statue to help them achieve their goal."

Names in other languages

Click an area to open the relevant article.

References

• Bowser's body
• Aquatic areas
• Mario & Luigi: Bowser's Inside Story locations

• Articles with unsourced Japanese names
• Articles with unsourced French (Europe) names
• Articles with unsourced German names
• Articles with unsourced Italian names
• Articles with unsourced Korean names
• Articles with unsourced Spanish (Latin America) names
• Articles with unsourced Spanish (Europe) names