Aluminized 90° Exhaust Expanded Elbow – 4″ I.D. to 4″ O.D. | 12″ x 12″
Product Overview
The Aluminized 90° Exhaust Expanded Elbow – 4″ I.D. to 4″ O.D. is a heavy-duty solution for tight exhaust routing and smooth pipe transitions. Designed to connect a 4-inch inner diameter pipe to a 4-inch outer diameter pipe, this elbow features a 90-degree bend and 12″ x 12″ leg dimensions. Constructed from high-quality aluminized steel, it offers excellent corrosion resistance, heat durability, and long-term value—perfect for use in custom exhaust systems, stack setups, or OEM-style replacements.
Key Features & Benefits
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Aluminized Steel Construction – Designed for superior rust resistance and performance in high-heat environments.
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4″ I.D. to 4″ O.D. Expanded Fitment – Provides a secure slip-fit connection between exhaust pipes with different end types.
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90-Degree Elbow – Ideal for tight turns, directional changes, or vertical stack configurations.
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12″ x 12″ Dimensions – Compact and balanced size for secure clamping and versatile installation.
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Universal Application – Suitable for semi-trucks, diesel pickups, custom builds, and more.
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1-Year Warranty – Includes a 1-year manufacturer warranty for reliable peace of mind.
Expanded Benefit Section
The Aluminized 90° Exhaust Elbow – 4″ I.D. to 4″ O.D. – 12″ x 12″ is engineered for efficiency, fit, and longevity. Its expanded ends make installation fast and frustration-free, while the 90-degree bend helps route exhaust cleanly through tight spaces or sharp turns. The aluminized steel finish protects against road grime, salt, and heat—extending service life and keeping performance consistent. Whether you’re upgrading, repairing, or customizing, this elbow offers the flexibility and durability your exhaust system needs.
Vehicle Compatibility
Ideal for any exhaust system requiring a 4″ I.D. to 4″ O.D. connection, including Peterbilt, Kenworth, Freightliner, Western Star, diesel pickups, and other commercial or custom applications.
Technical Specifications
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Item Number: AE902-4-1212
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Material: Aluminized Steel
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Finish: Rust-Resistant Aluminized Coating
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Angle: 90 Degrees
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Fitment: 4″ Inner Diameter to 4″ Outer Diameter
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Dimensions: 12″ x 12″ (Leg Lengths)
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Warranty: 1-Year Manufacturer Warranty
What’s Included
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(1x) Aluminized 90° Exhaust Expanded Elbow – 4″ I.D. to 4″ O.D. (12″ x 12″)
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Warranty: 1-Year Manufacturer Coverage
Compact Fit. Heavy-Duty Build. Built to Last.
The Aluminized 90° Exhaust Elbow – 4″ I.D. to 4″ O.D. offers a rugged, rust-resistant solution for compact exhaust routing. Order now and finish your build with the strength, fitment, and durability your system deserves.














