Item num:

OP-SR001-12mm

Specification:

Engine Oil Pump

Oem fit and design

Top quality  Aftermarket part

100% strict QC

Replaceable Part Num:

15010AA300 (Oil Pump)

806733030 (Oil Seal)

10991AA000 (O-Ring)

800706500 (Mounting Bolt)

Suit:

Rotor L : 12mm

Year	Make	Model	Engine	Note
2004-2006	SUBARU	BAJA	2.5L 2458CC H4 DOHC TURBO	(16 Valve) Eng. Code "EJ25T, EJ255"
2003-2006	SUBARU	BAJA	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ253"
2006-2010	SUBARU	FORESTER	2.5L 2458CC H4 DOHC TURBO	(16 Valve) Eng. Code "EJ25T"
1998	SUBARU	FORESTER	2.5L 2458CC H4 DOHC	(16 Valve) Eng. Code "EJ25D"
2000	SUBARU	FORESTER	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ252, EJ253"
1999-2005	SUBARU	FORESTER	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ253"
1998	SUBARU	FORESTER	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ253"
1993-1997	SUBARU	IMPREZA	1.8L 1781CC H4 SOHC	(16 Valve) Eng. Code "EJ18E"
2002-2005	SUBARU	IMPREZA	2.0L 1994CC H4 DOHC TURBO	(16 Valve) Eng. Code "EJ20T, EJ205"
1995-2001	SUBARU	IMPREZA	2.2L 2212CC H4 SOHC	(16 Valve) Eng. Code "EJ22E"
2008-2011	SUBARU	IMPREZA	2.5L 2458CC H4 DOHC TURBO	(16 Valve) Eng. Code "EJ25T, EJ255"
2004-2007	SUBARU	IMPREZA	2.5L 2458CC H4 DOHC TURBO	(16 Valve) Eng. Code "EJ25T, EJ255,EJ257"
1998	SUBARU	IMPREZA	2.5L 2458CC H4 DOHC	(16 Valve) Eng. Code "EJ25D"
1999-2009	SUBARU	IMPREZA	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ253"
1991-1994	SUBARU	LEGACY	2.2L 2212CC H4 SOHC TURBO	(16 Valve) Eng. Code "EJ22T"
1990-1999	SUBARU	LEGACY	2.2L 2212CC H4 SOHC	(16 Valve) Eng. Code "EJ22E"
1996-1999	SUBARU	LEGACY	2.5L 2458CC H4 DOHC	(16 Valve) Eng. Code "EJ25D"
2000	SUBARU	LEGACY	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ252, EJ253"
2001-2009	SUBARU	LEGACY	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ253"
2007-2009	SUBARU	OUTBACK	2.5L 2458CC H4 DOHC TURBO	(16 Valve) Eng. Code "EJ25T, EJ225"
2000	SUBARU	OUTBACK	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ252, EJ253"
2001-2009	SUBARU	OUTBACK	2.5L 2458CC H4 SOHC	(16 Valve) Eng. Code "EJ251, EJ253"

Package:

1 * Oil Pump w/ Oil Seal

8 * Screw Bolts

1 * O-ring

How Do Oil Pumps Work?

An oil pump in an internal combustion engine circulates the motor oil to the bearings, pistons, and camshaft of the engine. The pump forces the oil out under high-pressure and lubricates the bearings while it assists in cooling the engine. Oil pumps come in a variety of types. The most commonly used pumps are gear pumps, vane pumps, trochoid pumps, and plunger pumps.

Different types of pumps work in different ways, and some are more sophisticated than others.

Type of Pump	How It Works
Trochoid pump	Positive displacement pump consisting of inner and outer rotor Rotors spin in opposite directions, creating compression, which pushes oil to rest of engine
Vane pump	Consists of vanes mounted to rotor inside cavity Offsets rotor and cavity, causes deviation of curve from circularity Deviation forcefully pushes oil to rest of engine
Plunger pump	High-pressure seal is stationary, while cylindrical plunger slides through seal Force of plunger pushes oil to engine Most commonly found in smaller engines
Gear pump	Uses group of gears to pump fluid to engine Most commonly used in chemical installations to pump fluids with higher viscosity

Most of the cars and trucks made today use trochoid or vane pumps to circulate oil. High performance engines need a stronger oil pump. Their cooling needs are different from regular automobile engines because they typically run at a higher rpm.

Oil Pump Failure Symptoms

If the oil pump on a car or truck fails, the lack of oil could cause serious damage to the engine. The most common indication that a problem with an oil pump exists is the oil indicator light coming on. The oil light is on the instrument panel of most vehicles. This light does not tell a driver whether the oil pump is bad, but it alerts him to a problem. Usually when this light appears, people should add motor oil to the engine right away, but drivers should find the cause of the oil depletion.

Overheating

If a driver experiences an oil-related problem, he may notice some engine overheating. A car or truck that is running hot is an indication that engine oil is not present. It could also mean that engine oil is not circulating enough to reduce the friction on the integral parts inside the motor.

Knocking

A knocking sound that comes from the engine is another indicator of a problem. When the vehicle's hydraulic filters have lubrication and work properly, they should run silently. A noise indicates to the driver that the parts are wearing unevenly because of improper lubrication. Other parts that may make noise from lack of oil are the seals, valve guides, and pushrods.

Noisy Oil Pump

A noisy oil pump is an uncommon symptom. An oil pump does not usually make a noise, even when it begins to go bad. A faulty oil pump has a whining or whirring sound, which is most inaudible when the car is idling. These sounds indicate the internal gears of the oil pump are deteriorating.

How to Replace an Oil Pump

Safety Tip:

Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or closed toe shoes.

1.Park the vehicle on a solid level surface, and set the parking brake. 2.Place a drain pan under the engine and remove the oil drain plug. 3.Completely drain the engine oil into the drain pan. Reinstall the drain plug.

4.Lift the front of the vehicle and support it with jack stands. 5.Remove the oil pan mounting bolts and pry the pan from the engine block.

6.Remove the oil pan gasket using a gasket scraper tool. 7.Clean the engine block mounting surface with a rag and scraper tool. 8.Using the proper tools, locate and remove engine oil pump.

9.Install new engine oil pump and torque to the manufacturer's specifications. 10.Place the new oil pan gasket over the pan. 11.Re-install the oil pan back onto the engine block. 12.Add engine oil to manufacturer's capacity specification. 13.Install the engine oil cap and start the engine. 14.Check the oil after running the engine ensuring that the level is correct and no leaks are present. 15.Re-check engine oil pressure to verify the repair.