Granatelli 540261 Features:

• True 44 mm valve diameter for maximum exhaust flow
• Piston-actuated system for precise and stable boost control
• Black anodized billet aluminum cap for strength and sleek style
• Durable stainless-steel base with natural finish
• Includes V-Band inlet/outlet flanges and clamps
• Included five variable rate springs for fine-tuning of desired boost levels

UltimateBoost Control Solution:

Engineered for turbocharged applications that demand power,consistency, and reliability, this wastegate is the go-to choice for dragracing, performance street cars, and diesel builds. When boost control mattersmost, Granatelli delivers.

Engineered for Serious Performance and The Ultimate Boost Control Solution:

Engineered for Serious PerformanceTurbocharged applications that demand power, consistency and reliability. TheGranatelli Piston Style wastegate is the Go-To choice for drag racing,performance street driving, and even bad boy diesel builds.  When it comesto perfect boost control, Granatelli delivers.  The included V-Bandflanges and clamps for both the inlet and outlet make installation straightforward.  The supplied Five Spring Kit allows you to fine-tune yourboost settings right out of the box.  These various size springs can becombined for the desired boost pressures.

Piston-Actuated Advantage:

Unlike diaphragm-style units, the piston-actuated design provides tighterboost regulation and longer service life in the most extreme conditions.The black anodized billet aluminum top cap resists corrosion, whilethe stainless-steel base with naturalfinish withstands high heat and pressure.

Simple Installation & Adjustability:

Installation is straightforward with the included V-Bandinlet and outlet flanges with clamps. The supplied Five Spring Kit allows you to fine tune your boostsettings right out of the box.  These various-sized springs can be combinedfor the desired boost pressures.

Each unit includes Five Springs: One 4.2 psi spring (installed inside) andone 4.1 psi spring (installed inside) for a combined factory setting of 8.3 psi.An additional three springs are included, Black is 4.7psi (30 mm dia. X 64 mm),Yellow is 6.7 (40 mm dia. X 64 mm), and Red is 12.7 (40 mm dia. X 64 mm) Customerscan combine the spring pressure they want.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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