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Specifications

The Grand Rock R5I-4IA reducer is a heavy-duty exhaust adapter designed for durability and performance. Made from aluminized steel, it connects a 5-inch ID inlet to a 4-inch ID outlet, ensuring smooth exhaust flow and corrosion resistance. Ideal for vocational trucks, fleets, and aftermarket upgrades, it withstands high heat and tough environments. Easy to install and compatible with multiple exhaust setups, this reducer provides long-lasting value and reliability from Grand Rock, available at Wofford Truck Parts.
Weight
2

Compatibility


Alternative Part Numbers

  • OEM / Interchanges: HDM28-540A
  • NEL89277A
  • R5I4IA

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