Chrome Truck Exhaust Rain Cap – Spring-Hinge – 4", 5", 6" Diameters

Spring-hinge chrome rain cap for open truck exhaust stacks — the hinged cap pops open under exhaust pressure and closes automatically when the truck is off, keeping rain, snow, and debris out of the stack. Clamp-on install; fits standard 4", 5", or 6" stack outer diameters.

Key Features

• Chrome-plated heavy-gauge steel — mirror finish over rust-resistant base
• High-temperature durable coating — holds up to sustained exhaust heat
• Anti-deformation construction with reinforced curve
• Universal slip-fit bottom — pairs with standard truck exhaust tubing and clamps (clamp sold separately unless noted)
• Choose your exact size in the variant selector — dim diagram shows the actual inches for each

Body Dimensions

• Fits stack outer diameter: varies by variant — see the size selector
• Overall length across the hinge arm: ~10.24" / 26 cm
• Spring-hinge design — opens automatically under exhaust pressure

SKU Reference

• 4" → SKU PL-ERC4
• 5" → SKU PL-ERC5
• 6" → SKU PL-ERC6

Note: Measure the outer diameter (OD) of your existing exhaust pipe and confirm it matches the stack's slip-fit inlet before ordering. See each variant's dim diagram for the exact length and diameter. Clamp is sold separately (see the Exhaust Clamps collection).