Granatelli 4.0" Mating Flat Flanges – 308540-M

4-INCH EXHAUST SYSTEMS DESERVE A CLEAN, SERVICEABLE CONNECTION.

The Granatelli Motor Sports 308540-M 4.0" V-Band Mating Flat Flange Kit provides a reliable, removable connection for custom exhaust systems, performance applications and fabrication projects using compatible 4-inch (102mm) exhaust tubing.

Featuring mating flat flanges and a V-band clamp, this kit is designed to create a convenient connection point that can be assembled and disassembled more easily than traditional multi-bolt exhaust flange setups.

Why Use a V-Band Connection?

A V-band connection provides a practical way to create a removable exhaust joint without relying on multiple individual bolts and nuts. The clamp secures the mating flanges together, making the connection especially useful for exhaust sections that may need to be removed for servicing, repairs, fabrication or future modifications.

FLAT MATING FLANGE DESIGN

Simple, Clean & Serviceable

The flat mating flange configuration provides a straightforward connection point for custom exhaust fabrication. Once properly positioned and welded to compatible tubing, the mating flanges create a secure connection that can be quickly separated using the included V-band clamp.

Designed for 4-Inch Exhaust Systems

With a 4.0-inch (102mm) pipe diameter, the Granatelli 308540-M is designed for larger performance exhaust systems and custom fabrication projects. Its universal configuration makes it suitable for custom automotive, diesel, marine and industrial applications where a 4-inch V-band connection is required.

Best For

✓ 4-inch exhaust systems   •   ✓ Custom exhaust fabrication   •   ✓ Performance vehicles   •   ✓ Turbocharged applications   •   ✓ Diesel applications   •   ✓ Race-car exhaust systems   •   ✓ Removable exhaust sections   •   ✓ Marine applications   •   ✓ Industrial fabrication

COMPLETE V-BAND KIT

What's Included

1 V-Band Clamp

Flat Mating Flange

Matching Flange

Kit includes the V-band clamp and flat mating flanges.

Built for Custom Exhaust Fabrication

The Granatelli 308540-M is intended for fabrication projects using 4-inch exhaust tubing. It can be incorporated into custom exhaust systems, turbo applications, diesel performance builds, race vehicles and other projects requiring a removable V-band connection.

APPLICATION & FITMENT

Universal 4-Inch Fabrication Fitment

This is a universal fabrication component intended for custom applications using 4.0-inch (102mm) exhaust tubing. It is not a vehicle-specific direct-fit replacement. Always verify tubing diameter, flange dimensions, connection orientation and available clearance before installation.

VEHICLE APPLICATIONS

Cars, Trucks, Diesel & Custom Performance Builds

The 308540-M is a universal fabrication component rather than a vehicle-specific bolt-on part. It can be incorporated into compatible custom exhaust systems when 4-inch tubing and matching flange dimensions are used.

Common applications include performance cars, diesel trucks, race vehicles, turbocharged builds, off-road vehicles, marine systems and industrial equipment.

Product Specifications

Brand	Granatelli Motor Sports
Part Number	308540-M
Product Type	V-Band Clamp & Mating Flat Flange Kit
Pipe Diameter	4.0 Inches (102mm)
Flange Style	Flat Mating Flanges
Clamp Style	V-Band
Clamp Material	Steel
Clamp Color	Natural
Fitment	Universal Fabrication Application
Quantity	Sold as a Kit
UPC	802735037661
Condition	New

FITMENT & FABRICATION NOTE: This is a universal exhaust fabrication component designed for 4.0-inch (102mm) exhaust systems. Verify tubing diameter, flange dimensions, available clearance and connection orientation before installation. Proper flange alignment and professional fabrication practices are recommended for a secure and leak-resistant connection.