HD Spring-Loaded T-Bolt Clamp 3.50-3.81in - 300 Series Stainless - Mack 21473669 Volvo 1675068 561.230350

Keep the joint sealed with this heavy-duty Spring-Loaded T-Bolt Hose Clamp distributed by FleetPro Parts & Tires. It is built to hold constant sealing tension on truck coolant, charge-air and exhaust connections, clamping a 3.50-3.81in range with a 300 series stainless steel band. A clamp that has relaxed lets coolant weep down the block, lets a charge-air boot walk off its pipe under boost, and turns a soot-stained exhaust joint into a shop visit. Manufactured by Automann to Fleet Standard specifications, this clamp is stocked heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.

Constant Tension: The Spring-Loaded T-Bolt Advantage

An ordinary worm-gear clamp is a fixed diameter. Hoses and boots swell when they get hot and shrink back when they cool, and after enough heat cycles that fixed clamp is simply no longer tight. The spring-loaded T-Bolt design answers that with spring tension behind the bolt: as the joint expands and contracts, the spring takes up the slack and the band keeps pulling. That is the whole point of this clamp, and it is why it maintains clamping force through the heat cycles where worm-gear clamps loosen.

The band itself is 0.031in thick 300 series stainless steel and 0.75in wide, so it spreads load across the hose instead of cutting a groove into it, which matters on soft silicone charge-air cooler boots. The 1/4in-28 plated bolt gives a proper torque handle and resists seizing in road salt. Sized for a 3.50-3.81in clamping range, it covers coolant hoses, CAC boots and exhaust joints, and it is a direct replacement for highly searched industry numbers including Mack 21473669 and Volvo 1675068, 1675069 and 85137462.

Vehicle Fitment & Compatibility

This heavy-duty clamp uses a universal design intended for the following commercial applications:

• Make/Model: Universal application, heavy-duty trucks
• Clamping Range: 3.50-3.81in
• Systems: Coolant hoses, charge-air cooler boots, exhaust joints
• Component Group: Exhaust & Emissions / Exhaust Components

Direct Replacement & Cross-Reference Numbers:

This Automann clamp serves as a direct replacement for the following part numbers:

• Mack Interchange: 21473669
• Volvo Interchange: 1675068, 1675069, 85137462
• Automann Distributor #: 561.230350

Technical Specifications

• Component Type: HD Spring-Loaded T-Bolt Hose Clamp
• Clamping Range: 3.50-3.81in
• Band Width: 0.75in
• Band Thickness: 0.031in
• Band Material: 300 Series Stainless Steel
• Bolt: 1/4in-28 Plated
• Weight: 0.32 lbs
• Package Dims: 6 x 4.25 x 1 in
• Product Level: Fleet Standard Aftermarket
• Brand: Automann (Distributed by FleetPro Parts & Tires)