Granatelli 540261 44mm External Wastegate Piston Actuated 5-Spring V-Band

Vehicle Fitment

• Universal - for turbocharged applications demanding precise boost control (drag racing, street performance, diesel builds); not vehicle-specific

Fitment Notes

• V-band connections - confirm your exhaust/wastegate plumbing uses matching V-band flanges
• Sold individually
• Piston-actuated design does not require water-cooling plumbing, unlike Granatelli's diaphragm wastegate line

Features

• Piston-actuated design offers tighter boost regulation and longer service life than diaphragm-style units, especially under extreme conditions
• Included five-spring kit lets you combine springs to dial in a wide range of boost pressures right out of the box
• V-band inlet and outlet flanges with clamps included for straightforward installation
• Black anodized billet aluminum top cap resists corrosion
• Stainless steel base (natural finish) withstands high heat and pressure

Specifications

• Type: Mechanical, External, Piston Actuated
• Wastegate Diameter: 44mm
• Top Cap Material: Black Anodized Billet Aluminum
• Base Material: Stainless Steel, Natural Finish
• Connection: V-Band
• Weight: 4 lbs

Included Components

• 1x 44mm External Wastegate, Piston Actuated
• Five-Spring Kit
• V-Band Inlet/Outlet Flanges and Clamps

Product Description

Granatelli's piston-actuated wastegate trades the diaphragm design's simplicity for tighter boost regulation and a longer service life under repeated hard use - a common upgrade path for drag racing, high-power street builds, and diesel setups where consistent boost control matters most.

The included five-spring kit means you're not locked into one boost target: combine springs to dial in the pressure your combination needs without ordering separate parts. V-band flanges and clamps make installation straightforward, and the black anodized top cap paired with a stainless steel base is built to handle sustained heat and pressure cycling.