68157291AA | Genuine Mopar® Fuel Filter Kit

A Fuel Filter Kit 68157291AA is a set of components designed to clean the fuel before it enters the engine, protecting the fuel system from contaminants and ensuring proper engine performance. Fuel Filter Kit for the 6.7L Cummins Turbo Diesel.

General Specifications

Fitment

Fitment can vary by engine build and options. Match the part number on the part you are replacing, or contact us with your vehicle details before ordering.

Purpose & Function

1. Remove Contaminants From Fuel

• Filters out dirt, rust, dust, and other debris

• Prevents particles from damaging injectors and fuel pumps

2. Separate and Remove Water (Diesel Engines)

• Many kits include a water separator

• Protects the system from corrosion and injector damage

3. Maintain Proper Fuel Flow

• Ensures the engine receives a steady, clean fuel supply

• Prevents fuel starvation and rough running

4. Protect High-Pressure Fuel Components

• Modern engines rely on precise fuel injection

• Clean fuel prevents premature wear and failure of injectors and pumps

5. Improve Engine Performance and Efficiency

• Clean fuel allows optimal combustion

• Helps the engine run smoother and use less fuel

6. Extend Engine Life

• Reduces internal damage caused by contaminated fuel

• Keeps the entire fuel system operating correctly

Signs of a Bad Fuel Filter

1. Hard Starting or No Start

• Engine cranks but struggles to start

• Severe clogging can prevent the engine from starting at all

2. Engine Stalling

• Sudden stalling, especially under load or acceleration

• Often restarts after sitting (fuel slowly passes through the clog)

3. Loss of Power

• Weak acceleration

• Poor performance when towing, climbing hills, or under heavy load

4. Rough Idle or Misfiring

• Engine shakes or runs unevenly

• Inconsistent fuel supply causes misfires

5. Hesitation During Acceleration

• Delayed response when pressing the gas pedal

• Feels like the engine is "starving" for fuel

6. Reduced Fuel Efficiency

• Engine burns more fuel to compensate for restricted flow

7. Check Engine Light

• May trigger codes related to lean conditions or fuel pressure problems
  (e.g., P0171, P0087)

8. Engine Surging

• Alternating power loss and bursts of power

• Caused by inconsistent fuel delivery

9. Unusual Noises From Fuel Pump

• Whining or loud humming

• Pump is working harder to push fuel through a clogged filter

About Mopar

Mopar is the official parts, service, and customer care brand for Chrysler, Dodge, Jeep, Ram, and Fiat vehicles. Originally short for “Motor Parts”, Mopar was established in 1937 and is now a global brand under Stellantis.

Mopar supplies genuine OEM parts, accessories, and performance upgrades, and it supports dealerships and technicians with tools, diagnostics, and factory-backed service. Known especially among enthusiasts for its muscle car heritage, Mopar is also a major presence in motorsports and custom vehicle culture.