The Alliant Power AP0132 is a new fuel injector installation kit (cylinders 1, 3, 6 & 8) for 2017–2023 GM L5P/L5D Duramax applications. Alliant’s Diesel Fuel Injector Line carries pressurized fuel through the diesel injection system to support injector operation.

Features & Benefits

• New Alliant Power Fuel Injector Installation Kit (Cylinders 1, 3, 6 & 8) (Alliant P/N AP0132)
• Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
• Direct replacement for 12685924 / 12687230 / 12720157
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Application

• Chevrolet Silverado 2500 HD / Silverado 3500 HD (2017–2020)
• Chevrolet Silverado 2500 HD / Silverado 3500 HD (2017–2023)
• GMC Sierra 2500 HD / Sierra 3500 HD (2017–2020)
• GMC Sierra 2500 HD / Sierra 3500 HD (2017–2023)
• Chevrolet Silverado 5500 HD / Silverado 6500 HD (2019–2020)
• Chevrolet Silverado 4500 HD / Silverado 5500 HD / Silverado 6500 HD (2019–2023)

Always verify fitment against your VIN, engine, and OE part number before ordering.

Cross-Reference / Replaces

• General Motors: 12685924, 12687230, 12720157
• Alliant Power: AP0132

Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).