Walker 3" Exhaust Pipe Rain Cap for Vertical Stacks — 3" ID, aluminized/chrome/silent finish, heavy-duty protection

This Walker rain cap is engineered for heavy-duty applications where vertical exhaust pipes are exposed to rain, snow and road debris. Offered in aluminized, chrome and silent finishes, the cap slides over a 3" (ID) inlet to protect the stack opening while maintaining exhaust flow. It’s a simple, low-cost accessory designed to reduce moisture entry and prolong the life of truck exhaust components.

How does this cap protect a vertical exhaust pipe?

The cap blocks direct rainfall, prevents small debris and discourages birds or rodents from nesting in the pipe, all while allowing exhaust gases to exit freely. Its shape diverts water away from the inlet and the materials are chosen for corrosion resistance in harsh environments.

• Covers the open pipe end to limit moisture intrusion
• Redirects water flow to avoid pooling inside the stack
• Durable finish options resist corrosion from road salts and weather

Will the Walker 35618 fit my exhaust system?

This model is designed for a 3" internal diameter inlet; however, fit depends on your pipe wall thickness and installation method. Walker advises confirming dimensions and consulting compatibility tools or product notes before purchase to ensure a proper fit.

• Intended for 3" inside-diameter exhaust pipes
• Universal-style design—verify actual measurements before buying
• Check vehicle- or equipment-specific fit notes if using with Truck Staxx or other assemblies

What materials and finishes are available, and why they matter?

The cap comes in aluminized, chrome and a “silent” finish; each offers different aesthetic and performance trade-offs. Aluminized steel gives balanced corrosion resistance and cost-effectiveness, chrome offers a polished look, and the silent finish reduces clatter from wind and vibration.

• Aluminized steel: corrosion resistance for long-term outdoor use
• Chrome: polished appearance for visible stacks
• Silent finish: reduces noise caused by wind and vibration

How is it installed and what accessories might I need?

Installation is straightforward—slide the cap onto the pipe inlet and secure per your exhaust assembly’s recommended method. Walker supplies complementary accessories to complete exhaust repairs and ensure a stable installation when used with compatible hardware.

• Slide-on design for quick fitting to vertical stacks
• Use clamps or fasteners appropriate to your pipe and wall thickness
• Walker offers related accessories for full exhaust repair jobs

Who this product is for: drivers, fleet managers and mechanics who maintain heavy-duty trucks or equipment with vertical exhaust stacks will find the Walker Heavy Duty 35618 useful. It’s aimed at anyone needing a cost-effective, durable solution to keep moisture and foreign objects out of exposed exhaust openings, while matching the stack’s aesthetics or reducing wind noise.