The Alliant Power AP54820 is a remanufactured fuel contamination kit for 2017–2019 GM L5P Duramax applications. This Fuel System Contamination Kit provides the replacement components commonly required after fuel system contamination has occurred.

Features & Benefits

• Remanufactured Alliant Power Fuel Contamination Kit (Alliant P/N AP54820)
• 100% all Genuine OE or OE equivalent validated components
• One convenient kit that includes all necessary components to do a fuel system repair
• USA assembled and built proudly in an ISO 9001:2015 Certified Facility
• Direct replacement for 12678993 / 12701094 / 12674615
• Backed by Alliant Power’s 36-month, unlimited-mileage warranty

Included in the Box

• 8x Remanufactured Common Rail Injector OE# 12698552
• 1x Remanufactured Common Rail Pump OE# 12731367
• 1x Throttle Body Gasket
• 1x EGR Gasket
• 1x Turbocharger Air Inlet Adapter Seal
• 2x Upper Intake Manifold Seals
• 2x EGR Gasket Cooler Gasket
• 2x Coolant Thermostat Housing Gasket
• 1x EGR Coolant Feed Pipe Seal
• 1x Diesel Fuel Filter Element-Metal Free
• 1x Fuel Injection Fuel Return Pipe
• 1x Fuel Injection Fuel Return Pipe LH
• 1x Fuel Injection Fuel Return Pipe RH
• 1x Coolant By-pass Pipe Gasket
• 1x Thermostat Bypass Pipe Seal
• 1x Fuel Cooler
• 1x EGR Pipe Gasket
• 1x Fuel Injection Pump Nut
• 1x Left Hand Fuel Rail
• 1x Right Hand Fuel Rail
• 1x Fuel Feed & Return Line Set
• 4x Cylinder 2/4/5/7 Rail To Injector Line
• 4x Cylinder 1/3/6/8 Rail To Injector Line
• 1x Low Pressure Diesel Hydrocarbon Injector
• 1x High Pressure Fuel Line
• 8x Fuel Injector Hold Down Bolt

Application

• Chevrolet Silverado 2500 HD / 3500 HD and GMC Sierra 2500 HD / 3500 HD with the 6.6L L5P Duramax (2017–2019)

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

Cross-Reference / Replaces

• General Motors: 12678993, 12701094, 12674615, 12678992, 12696966, 12698552, 12647790, 12664576, 12685294, 12687230
• ACDelco: TP1015
• Navistar: 6040608C91
• Denso: 294050-0701, DXD-51708
• Alliant Power: AP54820

Warranty: Alliant Power lists this complete fuel contamination kit on its 3-year warranty coverage list (36 months, unlimited mileage/hours; parts & labor per Alliant’s policy).

A refundable core charge is added at checkout and refunded when your old components are returned per our core terms.