ETL INDUSTRIES 4-inch Exhaust Clamp Narrow-Band 2-Pack — T-304 Stainless, Zinc-Plated M10 Hardware

ETL INDUSTRIES 4-inch narrow-band exhaust clamp is a 2-piece, T-304 stainless steel solution built to join 4" OD to ID slip-fit exhaust pipe securely without welding.

Designed for automotive and light-fabrication use, this pair of exhaust clamps delivers corrosion resistance, high clamping force and straightforward, bolt-on installation. The clamps combine a 1.22" (31 mm) wide strap, approximately 1.89 mm thick, with zinc-plated M10 fasteners, a steel gasket and an aluminum alloy I-block to give a reliable connection for mufflers, catalytic converters and mid-pipe joints.

How durable is the 304 stainless steel construction?

The clamp band is made from T-304 stainless steel for strong rust resistance in typical road and weather conditions. Paired with zinc-plated bolts and a steel gasket, the assembly is built to resist corrosion at the joint and maintain clamping performance over time.

• T-304 stainless strap for general anti-corrosion properties
• Zinc-plated M10 bolt and nut to slow galvanic wear
• Steel gasket offers a pressure face that helps seal without crushing
• Aluminum I-block secures the bolt head and spreads load

Will this clamp damage or deform my exhaust pipe?

The clamp is engineered to seal joints with high clamping loads while minimizing pipe distortion. Its narrow-band design and included gasket concentrate sealing where needed, allowing flexible removal and reassembly without excessively deforming the tubing.

• Narrow 1.22" strap reduces surface contact that can lead to bending
• Steel gasket cushions and evens out clamping pressure
• Aluminum I-block helps distribute torque from the bolt
• Pre-attached hardware reduces risk of misalignment during tightening

How easy is installation and what tools are required?

No welding is required—these clamps are intended for bolt-on installation with pre-attached hardware for faster alignment. Typical installation needs are simple hand tools and a torque wrench if you want consistent clamping values.

• Pre-attached M10 bolt and nut for quick assembly
• Fits 4" OD-ID slip-fit connections without modification
• Requires standard wrench or socket set; torque wrench optional
• Clamp can be removed and reinstalled for repairs or adjustments

What applications are these clamps suited for?

These 4" narrow-band clamps work well for joining exhaust sections, repairing muffler connections and securing catalytic converter interfaces on most passenger vehicles and light trucks. They’re also useful in custom fabrication where a compact, high-load clamp is preferable to bulky couplers.

• Automotive exhaust joints and mid-pipes
• Muffler repairs and replacements
• Catalytic converter connections
• Custom metalwork requiring removable, high-clamp fasteners

Who is this for? Mechanics, DIY enthusiasts and metal fabricators who need a compact, corrosion-resistant clamp to join 4" slip-fit exhaust components will find this ETL INDUSTRIES two-pack practical and reliable. It’s especially suited to anyone seeking a non-welded solution that balances strong clamping force with minimal pipe distortion and straightforward installation.