LEDAUT 4" Lap Joint Exhaust Band Clamp 2-Pack — 304 Stainless Steel, Zinc-Plated, Single-Bolt with Alignment Block

LEDAUT's 4" lap joint exhaust band clamp (2-pack) is a stainless-steel connector designed to join a 4" outside-diameter pipe to a 4" inside-diameter pipe for mufflers, elbows and exhaust tubing with a secure, corrosion-resistant seal.

This pair of 4-inch lap joint clamps is built from 304 stainless steel with zinc plating to resist rust and stand up to road and weather exposure. They use a unitized, butt-joint design that delivers high clamp loads without bending or deforming pipes, and they’re sized to mate a 4" OD pipe to a 4" ID pipe—ideal for replacing worn connectors or assembling custom exhaust runs. Each pack includes two clamps and one block per clamp to lock alignment and maintain a tight seal while allowing future disassembly for service.

How does this clamp hold exhaust sections together?

The lap joint clamp wraps around the overlapping pipe ends and uses a captive bolt and block to draw the band tight, compressing the joint evenly. Its unitized construction reduces part count and helps apply clamp force uniformly, avoiding concentrated pressure points that can deform tubing.

• 304 stainless-steel band resists corrosion and maintains strength.
• Single-bolt lap joint tightens securely without bending pipes.
• Block piece ensures alignment and consistent compression.
• Design allows later disassembly for repairs or upgrades.

Will this clamp fit my pipes and muffler setup?

These clamps are made specifically to join a pipe with a 4" outside diameter to a pipe or muffler inlet with a 4" inside diameter. They are not adjustable beyond their specified sizing, so measuring pipe OD/ID before purchase is important for a correct fit.

• Intended for 4" OD to 4" ID exhaust connections only.
• Works with mufflers, elbows, catalytic housings and tubing sized accordingly.
• Two clamps in a pack let you secure both inlet and outlet connections if needed.
• Available in other sizes if your system requires a different diameter.

How durable and weather-resistant is the clamp?

The clamp is manufactured from 304 stainless steel and finished with zinc plating to extend corrosion resistance in harsh environments. This material combination resists rust and maintains clamping force under vibration and thermal cycling found in exhaust systems.

• 304 stainless steel resists oxidation and road salt corrosion.
• Zinc-plated hardware adds extra protection to fasteners.
• Unitized band reduces points of failure and overall weight.
• Designed for automotive and light-duty industrial exhaust use.

How easy is installation and service with these clamps?

Installation is straightforward: slide the band over the overlapping pipe ends, position the block, then tighten the bolt to secure the joint. The lap joint geometry clamps evenly without requiring pipe flaring, and the design allows the clamp to be removed later for maintenance or replacement of components.

• No specialized tools needed—standard wrench or socket fits the bolt.
• Butt-joint method avoids reshaping or custom welding during fitment.
• Removable design lets you disassemble the system for future service.
• Manufacturer recommends verifying size and type before purchase.

Who is this product for? These LEDAUT 4" lap joint exhaust band clamps are aimed at mechanics, DIY car and truck owners, fabricators and small shops that need a reliable, corrosion-resistant clamp to join 4" OD pipe to 4" ID components. If you plan to replace worn exhaust connectors, build a custom exhaust, or need a clamp that allows periodic disassembly without welding, this two-pack offers a practical, long-lasting solution—just confirm your pipe diameters before ordering.