FORD 3921981 Air Fuel Control Tube Line 5.9L 6BT

( Manufacturer Part Number: 3921981 ), ( Part Type: Fuel Control Line Tube ), ( Approximate Fitment: 1995 1996 1997 1998 F-600 F-650 F-700 F-750 F-800 Truck ), ( Removed From: 1997 Ford F-650 Xl 5.9l Diesel Fs4205 5 Speed Manual Transmission )

Review FORD 5.9l 6bt Air Fuel Control Tube Line Oem fits CUMMINS F650 F700

The Ford 3921981 F650 F700 5.9L 6BT Cummins Air Fuel Control Tube Line is an essential component in the fuel delivery system of your Ford F650 or F700 vehicle equipped with a 5.9L Cummins 6BT engine. This tube line plays a crucial role in ensuring efficient and clean combustion by delivering the correct air-fuel mixture to the engine's cylinders.

Featuring a durable and robust design, this air fuel control tube line is engineered to withstand the rigors of heavy-duty use. The tubing material is made from high-quality steel, providing excellent strength and resistance to corrosion, ensuring reliable performance even in harsh operating conditions.

The tube line consists of multiple sections that connect the air intake system, fuel system, and the engine. Each connection point is securely fastened using clamps, hose ends, or other appropriate fittings to minimize the risk of leaks and maintain a tight seal.

The tube line's internal diameter is optimized for the 5.9L Cummins 6BT engine, ensuring that the correct volume of air and fuel mix is delivered to the engine under all operating conditions. The tubing also features a smooth bore design, which reduces turbulence and ensures that the air-fuel mixture remains well-mixed for optimal combustion.

This tube line is essential for maintaining the performance, efficiency, and longevity of your Ford F650 or F700 with a 5.9L Cummins 6BT engine. Regular maintenance and replacement of worn or damaged components, such as the air fuel control tube line, is crucial for ensuring that your vehicle continues to operate at its best.

When it comes time to replace your existing air fuel control tube line, look no further than the Ford 3921981 F650 F700 5.9L 6BT Cummins Air Fuel Control Tube Line. This OEM replacement part is specifically engineered to meet the exacting specifications of your vehicle, ensuring a perfect fit and reliable performance. By choosing a genuine Ford part, you can have peace of mind knowing that you are getting a high-quality component that is designed to meet or exceed the original equipment's performance.

Buying a Ford 5.9L 6BT Cummins air fuel control tube line (part number F650 F700 3921981) for your vehicle involves some considerations. Here are some potential pros and cons:

1. Improved engine performance: Replacing worn-out or damaged air fuel control tube lines can help improve the overall performance of your engine. These parts are crucial for delivering the correct air-to-fuel ratio for efficient combustion.

2. Better fuel economy: A properly functioning air fuel control system can help optimize fuel consumption, leading to potential savings at the pump.

3. Reduced emissions: Properly functioning air fuel control components help ensure that your engine is operating efficiently, reducing the amount of harmful emissions released into the environment.

4. Improved reliability: Replacing worn-out or damaged parts with new ones can help prevent potential engine issues and extend the lifespan of your vehicle.

1. Cost: Replacing air fuel control tube lines can be an expensive repair, especially if you're dealing with multiple failed components.

2. Complexity: The air fuel control system on a 5.9L Cummins engine can be complex, and attempting to diagnose and repair the issue yourself may require a significant investment in tools and knowledge.

3. Availability: OEM parts like the 3921981 tube line can be difficult to find, and aftermarket alternatives may not offer the same level of performance or reliability.

Considering the pros and cons, it's clear that replacing the air fuel control tube line in your Ford 5.9L 6BT Cummins engine can offer significant benefits. However, the cost and complexity of the repair may deter some owners. If you're experiencing issues with your air fuel control system, it's essential to address them promptly to prevent potential engine damage and maintain the overall reliability and efficiency of your vehicle. Ultimately, the decision to repair or replace the tube line depends on your budget, technical expertise, and priorities.

If you're comfortable with the cost and complexity of the repair, it's recommended to replace the failed air fuel control tube line with a genuine OEM part (Ford part number F650 F700 3921981) for optimal performance and reliability. Alternatively, you can explore aftermarket options, but be sure to do your research to ensure that the parts meet the necessary standards and compatibility requirements. If you're not confident in your ability to diagnose and repair the issue yourself, it may be best to consult a professional mechanic for assistance.

Details:

Each part has been inspected and described as accurately possible. Flaws are disclosed in the and / or pictures; these parts sold AS-IS, with NO warranty. Ford F650 F700 5.9L 6Bt Cummins Air Fuel Control Tube Line OEM 3921981: 981: truck air fuel control tube OE condition: used - good, light wear Removed from a 1997 F-650 XL Diesel Fs4205 5 Speed Manual Transmission 2WD 153In. / Ext: Be White Int: Gray Approximate Fitment Year Range: 1995 1996 1997 1998 F-600 F-650 F-700 F-750 F-800 TRUCK Sold as: Individual This is a suggested year and model range for this part.

Condition: us good, light wear. Actual fitment may vary slightly; always verify using part number PRIOR to purchasing. Shipping info.

part #: 3921981 prices

• $45.00-$487.08

specifications airintakesystemse:

• for models: F650, F700, Cummins
• for makes: Ford
• mpn: 3921981
• part type: Fuel Control Line Tube
• approximate fitment: 1995 1996 1997 1998 F-600 F-650 F-700 F-750 F-800 Truck
• removed from: 1997 Ford F-650 Xl 5.9l Diesel Fs4205 5 Speed Manual Transmission

shipping airintakesystemse:

• service: Standard
• cost: $0.00
• class: Standard
• transit: 5-13 Days
• type: Fixed

payments airintakesystemse:

• wallet: Google-pay
• credit card: Mastercard
• other

returns airintakesystemse:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

offer airintakesystemse:

• quantity: 1
• sold: 0
• started: October 3, 2025
• availability: In Stock
• options: Ship-to-home

seller airintakesystemse:

• # reviews: 3690
• rating: 99.2%
• city: Gatesville, Texas

general airintakesystemse:

• condition: Used
• Car Truck Parts Accessories > Air Fuel Delivery > Hoses, Lines Pipes

Ford 3921981 Is Similar To:

• 003-f25099v8-014 Autozensation Ford Chrome Cold Air Intake System Black Filter (24.3% similar) Box addresses. Item must never have been installed and needs to be kept in the original packaging...(January 7th, 2019)
• 076922254678jwp Upower Red Air Intake Kit For Ford Expedition 192840103680 (23.6% similar) 4l v8 engine fit both automatic manual transmission specification: name:air intake kit brand:upwardly:red pipe DIAMETER:4 features: maximize performance, efficiency, fuel economy and creating an attractive noise increasing of horsepower 6-8 torque black steel heat shield help to isolate the air ...(February 22nd, 2019)
• 123maf Svt Ford Shelby Mustang Factory Cold Air Intake Box (29.7% similar) Nice used SVT air box system off a 2014 ford mustang Shelby GT500 with 3000 miles. May fit other model's. What you see in the pictures is are buying. I have other Shelby parts for sale please look at my offers...(November 6th, 2018)
• 13962535 Aftermarket Products Front New Air Intake Duct Ford Fusion (29.2% similar) The items are brand new parts that look and fit same as original, except at a much better price...(November 4th, 2018)
• 1720 Bbk For Ford Truck Cold Air Intake Kit 197975017208 (28.6% similar) Mustang and tip Camry model's. 4l cold air intake kit - chrome since 1988 the Bk performance brand has been synonymous with bolt on for modern muscle cars and trucks its beginning in levitation, pa ford F150 truck our moot is. American designed built. And it?something the entire Bk team proud of ...(April 19th, 2018)
• 1809030c1 Ford Idi Non Turbo Cylinder Head Assembly Left Oem (32.3% similar) 3 ID diesel engine. Good solid working condition. 3 ID non turbo diesel ENGINES88 E-250 vans with selling engine cylinder head assembly left drivers side. Oem used part...(October 10th, 2018)
• 1831358c1 Ford Super Duty Diesel Air Intake Hose (30.5% similar) 3l 1999 truck have a different set up and smaller turbo. Part number must match to fit proper. Cleaned and ready to install. This is the late model 1999 with larger turbo. Hardware included as seen in pics. 3l diesel intake boot. Removed from 2001 model bracket is not included, but listed ...(November 3rd, 2018)
• 1aeih00013 Auto Engine Air Intake Hose For Ford Probe New (31.5% similar) The entering air will cause your vehicle to run rough. It fits between the throttle body assembly and air flow meter after years of use, these rubber parts will usually develop cracks holes allowing to enter in. Specifications: direct replacement built to strict quality control standards replaces ...(June 30th, 2018)
• 1l3z9p761aa X25 Ford New Oem Vacuum Hose Expedition Explorer Sport Trac Mustang (13.4% similar) 8MM in size. Continental us. There is always a member of the Tosca family to meet with customer...(August 27th, 2018)
• 1l3z9p761ba X25 Ford New Oem Vacuum Hose Navigator Explorer Sport Trac Mustang (13.5% similar) Continental us. 4l navigator explorer sport track mustang identified in schematic if applicable:: brand new oem vacuum hose that is a direct factory replacement for the vehicles listed fitment guide below. The Tosca family has also led nation in both ford and Lincoln mercury sales during our history...(August 27th, 2018)
• 1r3u-9r504-ba Ford Mustang Cobra Air Intake Duct (28.8% similar) Possibly from strut bar. May have been painted in the past ford mustang cobra intake air duct item is used has some surface marks. Not 100 sure its broken or bent...(November 1st, 2018)