Performance Overview

aFe Power's new Twisted Steel header delivers an astounding 12hp and 19lbs. x ft. torque while outflowing the factory exhaust manifold. aFe engineers have designed a header that features a symmetrical tube design for optimum balance and efficiency of exhaust flow. To eliminate dead space that can cause turbulence and hindering flow that formed collectors are prone to produce, a true merged collector and optimized tube lengths are used for true pulse control technology improving flow and performance. 100% TIG-Welded construction ensures optimal strength and durability. The smooth curves and increased diameter of this header help remove restriction and keep exhaust gas flowing smoothly for improved performance and durability on and off the trails. All components are supplied for a hassle-free installation with no modifications necessary.

Key Features

• Brand: aFe Power
• Part number: 48-34145
• Product type: Twisted Steel 1.75" Short Tube Header
• Designed for the compatible vehicle applications listed on this page

Vehicle Fitment

• 2021 Chevrolet Express 2500 Base, Ls, Lt 6.6L
• 2022 Chevrolet Express 2500 Base, Ls, Lt 6.6L
• 2023 Chevrolet Express 2500 Base, Ls, Lt 6.6L
• 2024 Chevrolet Express 2500 Base, Ls, Lt 6.6L
• 2025 Chevrolet Express 2500 Base, Ls, Lt 6.6L
• 2021 Chevrolet Express 3500 Base, Ls, Lt 6.6L
• 2022 Chevrolet Express 3500 Base, Ls, Lt 6.6L
• 2023 Chevrolet Express 3500 Base, Ls, Lt 6.6L

FAQ

Will this fit my vehicle?
Please verify your year, make, model, position, and any fitment notes using the compatibility list above before purchase.

What part number is this?
The listed part number is 48-34145.

Is this product designed for direct replacement?
Yes. This product is intended to match compatible vehicle applications listed in the fitment section.

Should I confirm fitment before ordering?
Yes. Always compare your original part, position, and vehicle details with the fitment chart before ordering.

Common Searches

• Twisted Steel 1.75" Short Tube Header for Chevrolet Express 2500 Base, Ls, Lt 6.6L
• 48-34145 fitment
• aFe Power Twisted Steel 1.75" Short Tube Header
• 2020 Chevrolet Express 2500 Base, Ls, Lt 6.6L Twisted Steel 1.75" Short Tube Header

Vehicle Fitment Table