Fuel Filter Water Separator
Fuel Filter Water Separator

Fuel Filter Water Separator with integrated priming pump

RACOR 700 Series Fuel Filter Water Separator

The Racor 700 Series Fuel Filter Water Separator is a two-stage filtration and re-priming system that’s designed for use in heavy-duty diesel applications. The assembly comes equipped with a state-of-the-art integrated fuel pump, which allows for easy priming and simplified service by eliminating messy filter pre-filling and engine hard starting. To meet the unique requirements of customer’s engines, the 700 Series is available in a wide range of configurations.The system can be fitted with either a 12-volt DC brushed motor “roller-cell” pump or a 12/24-volt DC brushless motor generator-motor (gerotor) pump. Both fuel pumps offer electric on-demand priming at the push of a button and have output pressures regulated to 15 psi (103 kPa).

All 700 Series configurations utilize Racor’s proprietary Aquabloc filtration elements. Aquabloc is a unique engineered media that incorporates pleat-spacing corrugations and a graduated pore structure to increase dirt-holding capacity and extend filter life.

The media is waterproof and rustproof, capturing contaminants while the specially treated surface separates and coalesces water from the fuel; causing the water to gather into large droplets that then fall into the clear collection bowl. Aquabloc elements are available in two different ratings : 30 micron (98%@30 micron) – Ideally suited as a pre-filter to protect downstream filters from excessive contamination. Extends the life of on engine filters. 10 micron (98%@10 micron) – Captures more contaminants than 30 micron elements, and more effective at stopping water. Extends the life of the entire fuel system.

How They Work When priming, fuel from the tank is drawn through a fine pre-screen and into the pump. From there, fuel primes the spin-on filter element and then exits the filter assembly. In running mode, fuel bypasses the pump portion and enters the Aquabloc media element directly, where particle and water contaminants present in diesel fuels are trapped before they can damage the fuel injection system.

All Racor filter materials and seals are compatible with ultra-low sulfur diesel and biofuels up to B20 blend. Markets :

  • Marine.
  • Oil and Gas
  • Construction.
  • Power Generation.

Recreational Vehicles (Motorhomes) Applications :

Diesel and Biodiesel Engines Benefits :

  • Integrated priming pump simplifies service and start-up by eliminating messy filter pre-filling and engine hard starting.

  • The 12/24V DC brushless gerotor pump has fewer parts than gear or vane pumps, and the sensorless control technology of the DC motor makes this product the most reliable filter and pump assembly on the market.

  • Removes water that enters the system through condensation in the fuel tank.
  • Removes hard particles present in air that are introduced during fueling, such as sand and silica.
  • Removes soft contaminant particles from overheated and degraded diesel fuel, which coat filters with black asphaltene-like substance, leading to power loss and engine shutdown.

  • Prevents costly injector damage and increases operational life of downstream filters.
  • Saves time and money by eliminating unplanned maintenance and unscheduled downtime from system component failure.

  • Can be upgraded to the R125 replacement filter without the need to purchase a new bowl. The R125 is a great fit for heavy-duty and biodiesel applications. More Aquabloc media in the R125 provides up to three times the life and improved water removal when compared to standard filters.

Features :

  • Aquabloc engineered media elements with 98% efficiency at 10 or 30 micron.

  • Flow 45 to 120 gph (170 to 454 lph) in upgraded applications.

  • Aluminum filter head with integral mounting bracket and four ports (2 inlets and 2 outlets) with 7/8” – 14 SAE UNF threads.

  • Self-venting drain.

  • 12V DC or 12/24V DC electronic priming pump system.

  • Replaceable spin-on filter.

  • Reusable, clear collection bowl.

  • 100 micron pre-pump filter screen.

  • Water-in-fuel (WIF) water detection probe.

  • Vent valve to purge air during fuel priming.

  • Compatible with ultra-low sulfur diesel and biofuels up to B20 blend.

Tech Specification :

TYPE Spin-on Filter
SERIES TYPE Cartridge FF/WS Pump
MOUNTING Head Bracket
BOWL MATERIAL Clear Engineering Plastic
PUMP Brushed pump outputs up to 47 gph (170 lph) and the brushless pump outputs up to 63 gph (240 lph)
FLOW RATE (GPH) 45, 60, 90, 120
FLOW RATE (LPH) 170 and 227 lpm units use a brushed pump. 340 to 450 lpm pumps can be specified with brushed or brushless pumps.
MICRON RATING 98% @ 30 microns, 98% @ 10 microns
HEIGHT (INCH) 10.8 to 15.8 depending on product selected
HEIGHT (CM) 27.4 to 40.1 depending on prouduct selected
DEPTH (CM) 16.5
WIDTH (CM) 10.9
WEIGHT (LBS) 5.5 to 6.9 depending on product selected
WEIGHT (KG) 2.5 to 3.1 depending on product selected
APLICATION Electric Priming


  • Filters are often installed in hard to reach places for re-priming.
  • Air can get in fuel lines during filter change-out or storage.
  • Pre-filling filter can be messy.
  • Distance between tank and filter can be inconvenient for hand priming.


Racor 700 Series Integrated Fuel Filter/Water Separator with a two stage filtration and re-priming system.

  • Simplifies service.
  • No messy pre-filling.
  • Protects engine.
  • No lag in starting engine.
  • Fast and safe re-priming.

How it works

The 700 Series pump/fuel filter water separator assemblies are two stage filtration and re-priming systems. These complete fuel management systems isolates contaminants present in diesel fuels and traps them prior to reaching the fuel injection system, protecting the engine’s fuel system from costly and premature failure.

Features and Benefits

  • Compatible with Racor 345, 360, 390, 400, and 700 Series heads and bowls.
  • High contaminant capacity.
  • Improved water removal.
  • Available with 10 or 30 micron Aquabloc media.
  • Great for heavy-duty and biodiesel applications.
  • Flow 45 to 120 GPH (170 to 454 LPH) in upgraded applications.
  • Easy upgrade with existing Racor parts.
  • Optimum engine protection.

    Racor filter
    Racor filter

How to Order

745R 30 24′
Select a model Specify micron rating : 30 micron, 10 micron Specify a 24 vdc priming pump (see note)
745R= 45 GPH
760R= 60 GPH
790R= 90 GPH
7125= 120 GPH

Basic model comes standard with 12 vdc priming pump. 1To order the 24 vdc brushless pump assembly, insert 24 at the end of the part numbers. (example : 790R3024). Note: Pump is for priming purposes only, not for continuous operations unless protected by a pre-filter.

Specifications 745R30 745R30 790R30 7125R30
Maximum Flow Rate 45 GPH (170 LPH) 60 GPH (227 LPH) 90 GPH (340 LPH) 120 GPH (454 LPH)
Replacement Filter R45P or R45T R60P or R60T R90P or R90T R125P or R125T
Height 10.8 in. (27.4 cm) 11.8 in. (30.0 cm) 12.8 in. (32.5 cm) 15.8 in. (40.1 cm)
Width 4.3 in. (10.9 cm) 4.3 in. (10.9 cm) 4.3 in. (10.9 cm) 4.3 in. (10.9 cm)
Depth 6.5 in. (16.5 cm) 6.5 in. (16.5 cm) 6.5 in. (16.5 cm) 6.5 in. (16.5 cm)
Weight (dry) 4.5 lbs (2.0 kg) 5.5 lbs (2.5 kg) 6.5 lbs (2.9 kg) 7.7 lbs (3.5 kg)
Clean Pressure Drop 0.25 PSI (0.02 bar) 0.25 PSI (0.02 bar) 0.25 PSI (0.02 bar) 0.25 PSI (0.02 bar)
Ambient Temperature Range -40° to +225°F (-40° to +107°C)
Maximum Fuel Temperature 190°F (88°C)

Product Information and Specifications

The R125 series is a direct replacement for the 345, 360, 390, 400, 600, and 700 series Racor fuel filter water separator. The filter mounting head and collection bowl are compatible with the R125 series spin-on filter. If an engine is using a R45, R60, or R90 spin-on filter, it can now be upgraded to a R125 series without the need to purchase a new bowl or mounting head. Now it is easier than ever to get more capacity and flow without buying extra parts.

Racor filter specification
Racor filter specification

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