Cummins 5588718 Wiring Harness – OEM 20 ft Extension Harness for Tier 3 5.9L ISB/QSB Engines

Sale price $251.99 Regular price $359.00
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Description and Details

The Cummins 5588718 Wiring Harness is a genuine OEM 20 ft extension harness designed for Tier 3 5.9L ISB and QSB engines. Engineered to Cummins’ strict standards, this harness provides secure electrical connectivity, accurate signal transmission, and long-term durability in marine and industrial applications.

Built with heavy-duty, corrosion-resistant materials, the 5588718 harness is made to withstand heat, vibration, and harsh conditions while maintaining reliable system performance. Whether you’re replacing a damaged harness or extending an existing installation, this OEM component ensures proper fit and dependable operation.

Key Features:

  • Genuine Cummins OEM Part

  • Part Number: 5588718

  • 20 ft extension wiring harness

  • Designed for Tier 3 5.9L ISB / QSB engines

  • Provides accurate data and secure connectivity

  • Heavy-duty, corrosion-resistant construction

  • OEM fit for quick installation and long-lasting reliability

Applications:
✔ Cummins Tier 3 5.9L ISB and QSB engines requiring a 20 ft extension harness (5588718)

Trust Cummins OEM harnesses for system compatibility, secure connections, and dependable performance.

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Product Disclosure – Scenic City Supply

Scenic City Supply is an independent liquidation company. We are a secondary seller of products and are not affiliated with, sponsored by, or authorized by any product manufacturer. All trademarks, brand names, model numbers, and logos mentioned are the property of their respective owners and are used strictly for identification and compatibility purposes.

Scenic City Supply’s inventory comes from multiple sources, including but not limited to surplus, liquidation, closeouts, overstock, and insurance-loss merchandise. All products are new, OEM, and unused unless otherwise stated. As a liquidator, some items may show cosmetic imperfections such as tarnish, discoloration, or minor surface wear. These conditions do not affect the function, performance, or integrity of the product.

Packaging may be damaged, show signs of storage, or be replaced for safe delivery. The sale of this product by Scenic City Supply is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser. Any applicable warranties or guarantees will be disclosed in writing at the time of sale.

Every item is opened and inspected prior to shipment to confirm quality and accuracy. If you are not fully satisfied with your purchase, you may return it within 30 days in its original packaging for a full refund.