Hastings® FF1266-O - Fuel/Water Separator Diesel Filter

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Replaces Original (OE) Part #:F1HZ-9365-A, 23401-1440A, 234011440
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Product Details

Hastings Premium Filters

Fuel/Water Separator Diesel Filter by Hastings®. Outside Diameter: 4 1/4". This filter is designed to protect fuel system components, such as injection pumps and injectors, from damaging contaminants, including water, bacteria, non-combustible materials, wax, and tar-like contaminants. It's pressure tested to ensure long-lasting and reliable operation.



  • Meets or exceeds all filtration requirements of the application
  • Extends fuel system component life
  • Improves fuel system performance
  • Tested according to SAE J905 test procedures, the industry standard for fuel filtration
  • Keeps fuel flowing freely

Dirty fuel is a fact of life. It can include water, bacteria, non-combustible materials, wax, and tar-like contaminants that cause serious and costly damage to the engine. For example, water destroys the lubricative properties of your fuel damaging fuel system components and resulting in fuel flow stoppage at cold temperatures. This fuel filter will prevent any dust, dirt, and abrasives from entering your engine and fuel system protecting them from damage. Providing superior protection to the fuel system, the filter extends the service life of its components and improves performance of the whole system. To ensure this fuel filter meets OE specifications, the manufacturer tested it according to SAE J905 test procedures that are the industry standard for fuel filtration.

Since 1944, Hastings® Premium Filters has been selling premium automotive and commercial filters for passenger cars, over-the-road commercial vehicles, off-road construction, mining and logging equipment, as well as industrial, agricultural, and marine applications. In 1995, Hastings Premium Filters became part of the CLARCOR group, and that enabled the company to share in the latest technologies and new ideas in filtration with other companies of the corporation creating innovative filter solutions. Today the company designs and manufactures over 4,800 high-performance products that meet or even exceed OE requirements.

Part Number:
OE Numbers:
F1HZ-9365-A, 23401-1440A, 234011440

Warranty Information


Hastings Premium Filters (“Hastings”) warrants that each new product manufactured by Hastings will be made free of defects in workmanship and material. Hastings will replace any product found to be defective when you return it to Hastings or to your Hastings distributor where you purchased the product.

Return Process
You should first contact your salesperson at Hastings or at your Hastings distributor if you purchased a product that you believe does not meet the warranty stated above. The salesperson will help you complete the necessary paperwork, and will also help you return the suspected defective product to Hastings for analysis.

Warranty Fulfillment
If Hastings finds that a returned product does not meet the warranty stated above, Hastings will promptly replace the defective product. If the defective product directly caused damage to the machine on which it was installed, Hastings will promptly reimburse the machine owner for that portion of the repair costs that were necessary to restore the machine to its condition immediately prior to the damage caused by the defective product.

Hastings’ warranty fulfillment obligations above do not apply if: a) the product is not returned to Hastings for analysis, b) Hastings finds that the product was not defective, c) the product was improperly installed or used, d) the product was reused or not replaced inside a normal service interval, or e) the product is tampered with or damaged in a manner that may inhibit Hastings’s ability to conduct a warranty investigation.

The above warranty and warranty fulfillment obligations are exclusive and in lieu of all other warranties or related remedies. Hastings is not liable for indirect, incidental, punitive or consequential damages arising in any way from the products it manufactures or sells.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

Ford B-Series
1993 Ford B-Series
  • 6.6L
1992 Ford B-Series
  • 6.6L
1991 Ford B-Series
  • 6.6L
1990 Ford B-Series
  • 6.6L
1989 Ford B-Series
  • 6.6L
1988 Ford B-Series
  • 6.6L
1987 Ford B-Series
  • 6.6L
Ford C-Series
1994 Ford C-Series
  • 7.8L
1993 Ford C-Series
  • 6.6L
1993 Ford CF8000
  • 7.8L
1992 Ford CF7000 / CF8000
1991 Ford C-Series
  • 6.6L / 7.8L
1990 Ford C-Series
  • 6.6L
1989 Ford C-Series
  • 6.6L
1988 Ford C-Series
  • 6.6L
1987 Ford CF6000 / CF7000
1986 Ford C-Series
  • 6.6L
Ford F600
1993 Ford F600 / F600 LPO
  • 6.6L
1992 Ford F600 / F600 LPO
  • 6.6L
1991 Ford F600 / F600 LPO
  • 6.6L
1990 Ford F600 / F600 LPO
  • 6.6L
1989 Ford F600
  • 6.6L
1988 Ford F600
  • 6.6L
1987 Ford F600
  • 6.6L
Ford F700
1993 Ford F700
  • 6.6L
1992 Ford F700
  • 6.6L
1991 Ford F700
  • 6.6L
Ford F800
1993 Ford F800
  • 7.8L
1992 Ford F800
  • 7.8L
1991 Ford F800
  • 7.8L
1990 Ford F800
  • 7.8L
1989 Ford F800
  • 7.8L
1988 Ford F800
  • 7.8L
1987 Ford F800
  • 7.8L
1986 Ford F800
  • 7.8L
Ford L-Series
1993 Ford LN7000
  • 6.6L
1993 Ford LN8000
  • 7.8L
1992 Ford LN7000 / LN8000
1991 Ford LN7000
1991 Ford LN8000
  • 7.8L
1990 Ford LN7000
  • 6.6L
1989 Ford LN7000
  • 6.6L
1988 Ford LN7000
  • 6.6L
1987 Ford LN7000
  • 6.6L
Hino FA
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1998 Hino FA
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2004 Hino FD
2002 Hino FD
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2004 Hino FE
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1998 Hino FE
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2004 Hino FF
2002 Hino FF
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2000 Hino FF
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1998 Hino FF
Hino SG
2003 Hino SG
2002 Hino SG3325
2001 Hino SG3325
2000 Hino SG3325
1999 Hino SG3325
1998 Hino SG3325
Hino 338
2014 Hino 338 / 338CT
2013 Hino 338 / 338CT
2012 Hino 338 / 338CT
2011 Hino 338 / 338CT
2010 Hino 338 / 338CT
2009 Hino 338 / 338CT
2008 Hino 338 / 338CT
2007 Hino 338
2006 Hino 338
2005 Hino 338

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