How to Replace the Fuel Pressure Regulator on Subaru Outback?

Depressurize the fuel system and disconnect the battery's negative cable. Remove and plug the fuel damper hoses, replacing clamps as needed. Install the damper and tighten clamps. For models after 2004, remove the air intake duct and disconnect the hose from the fuel pressure regulator. Remove the regulator from the fuel rail and replace the O-ring. Reinstall in reverse order, ensuring all bolts and clamps are secure. Check for leaks upon starting the engine.

Genuine Subaru Outback Fuel Pressure Regulator

Fuel Tank Pressure Regulator

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13 Fuel Pressure Regulators found

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Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA351
$121.01 MSRP: $175.38
You Save: $54.37 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004 Subaru Outback | Baja-B | 2.5L H4 Turbo
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Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA400
$96.16 MSRP: $139.37
You Save: $43.21 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2007-2009 Subaru Outback | GT, GT Limited, XT Limited | 2.5L H4 Turbo
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Subaru Outback Fuel Injection Pressure Regulator
Part Number: 22670AA381
$120.69 MSRP: $174.92
You Save: $54.23 (31%)
ADD TO CART
Product Specifications
- Other Name: Regulator Assembly-Pressure; Fuel Pressure Regulator
- Replaces: 22670AA380
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2006 Subaru Outback | GT, GT Limited | 2.5L H4 Turbo
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Subaru Outback Fuel Injection Pressure Regulator
Part Number: 16622AA031
$415.74 MSRP: $613.18
You Save: $197.44 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator And Damper Assy Front ; Regulator And Damper Assembly-Fuel
- Replaces: 16622AA030
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2006 Subaru Outback | GT, GT Limited | 2.5L H4 Turbo
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Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA380
$120.69 MSRP: $174.92
You Save: $54.23 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Replaced by: 22670AA381
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Outback | GT, GT Limited | 2.5L H4 Turbo
View related parts
Subaru Outback Fuel Pressure Regulator
Part Number: 16622AA030
$415.74 MSRP: $613.18
You Save: $197.44 (33%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Regulator And Damper Assy Front ; Regulator And Damper Assembly-Fuel
- Replaced by: 16622AA031
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Outback | GT, GT Limited | 2.5L H4 Turbo
View related parts
Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA221
$111.57 MSRP: $161.70
You Save: $50.13 (31%)
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2004 Subaru Outback | Base, Brighton, Cold Weather, Flat6, Flat6 L.L.Bean, Flat6-S, GT, L, Limited, Post, SUS Flat6 | 2.2L H4 Series, 2.5L H4, 3.0L H6
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Subaru Outback Fuel Injection Pressure Regulator
Part Number: 16622AA010
Product Specifications
- Other Name: Regulator And Damper Assy Front ; Regulator And Damper Assembly-Fuel; Fuel Pressure Regulator
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2007 Subaru Outback | 3.0R, 3.0R Limited, 3.0R LL-Bean | 3.0L H6
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Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA390
$88.68 MSRP: $128.52
You Save: $39.84 (31%)
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Outback | 2.5i, 2.5i Limited | 2.5L H4
View related parts
Subaru Outback Fuel Injection Pressure Regulator
Part Number: 22670AA281
$88.68 MSRP: $128.52
You Save: $39.84 (31%)
Product Specifications
- Other Name: Regulator Assembly-Pressure; Fuel Pressure Regulator
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2005 Subaru Outback | 2.5i, 2.5i Limited, Base, Cold Weather, GT, L, Limited, L-S, SUS Limited | 2.5L H4
View related parts
Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA240
$111.57 MSRP: $161.70
You Save: $50.13 (31%)
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2004 Subaru Outback | Baja, Baja-S, Base, Brighton, Cold Weather, GT, L, Limited, L-S, Post, SUS Limited | 2.2L H4 Series, 2.5L H4
View related parts
Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA470
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2012 Subaru Outback | 2.5GT Limited, 2.5GT Premium | 2.5L H4 Turbo
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Subaru Outback Fuel Pressure Regulator
Part Number: 22670AA050
Product Specifications
- Other Name: Regulator Assembly-Pressure
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1996-1999 Subaru Outback | Brighton, GT, L, LS, LS-I, Out Back, Post, SUS | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4

Subaru Outback Fuel Pressure Regulator

The Fuel Pressure Regulator in your Subaru Outback ensures that fuel pressure will remain within a specific range so that the engine can receive the proper amount of fuel under all driving conditions. The Fuel Pressure Regulator attaches to the fuel rail and contains a spring-loaded diaphragm connected to a vacuum port and fuel return line in the Outback fuel system. As the engine idles, the vacuum pushes against the spring, causing the valve to open and excess fuel to return to the tank. When the throttle opens, vacuum is reduced, and this allows the spring to restrict return flow, maintaining a higher internal pressure. Through this mechanical feedback loop, the Subaru engine system avoids rich or lean mixtures. This is an effect that every Outback benefits from at various loads. There are two primary regulator designs. The pressure-reducing design that is normally open compresses inlet pressure to a set output. The back-pressure design that is normally closed opens at inlet pressures that exceed its set point. Both types use the same principle of a spring and diaphragm and respond quickly. If the Fuel Pressure Regulator fails closed, pressure rises, and the Subaru vehicle may run rich. Furthermore, a broken spring or an internal leak may cause the opposite low-pressure lean condition. The Subaru Outback may have driveability issues when the Fuel Pressure Regulator fails due to a loss of vacuum signal or blocked return line. The Fuel Pressure Regulator is essential for optimal engine performance.

Our website stands as the go-to online destination for OEM Subaru Outback Fuel Pressure Regulator. With complete lines of genuine Subaru Outback Fuel Pressure Regulator available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.

Subaru Outback Fuel Pressure Regulator Parts Questions & Experts Answers

Fuel Pressure Regulator
22670AA400
Q:
How to Replace the Fuel Pressure Regulator on Subaru Outback?
Posted by Kevin Q.
A:
Depressurize the fuel system and disconnect the battery's negative cable. Remove and plug the fuel damper hoses, replacing clamps as needed. Install the damper and tighten clamps. For models after 2004, remove the air intake duct and disconnect the hose from the fuel pressure regulator. Remove the regulator from the fuel rail and replace the O-ring. Reinstall in reverse order, ensuring all bolts and clamps are secure. Check for leaks upon starting the engine.
Answered by Subaru Parts Specialist Gary / Mar 06, 2025

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