How to maintain and replace the power brake booster unit on Subaru Forester?

Also, the power brake booster unit does not need any special maintenance, but it may require a regular check on vacuum hose and its casing. To check if it is working properly press the pedal without starting the engine for several times; there should be no change in pedal reserve distance. Next, push the pedal and start your engine. If it slightly goes down, then everything is alright. For air tightness inspection, start an engine and switch off after one or two minutes of running. Then slowly depress the pedal. If on first depression the pedal goes further down and then gradually rises on second and third depressions means that booster is airtight. In addition to that, with your engine running,repeatedly press the brake pedal down until you stop the car by depressing the brake pedal at once,till when you have held down for 30 seconds without any change in reserve travel of pedal,this booster is airtight.In case this booster has malfunctioned ,it cannot be repaired but must be changed with a new or rebuilt unit. To take out this booster disconnect vacuum hose ,remove master cylinder as well.Then inside vehicle remove cotter pin,pushrod clevis pin to unlock brake booster pushrod clevis from behind brake pedals.Lastly remove four nuts from firewall that holds back up into place.Remove those four nuts from back side of firewall.Relatively speaking,it is simple for installation though tightening of those nuts which hold this booster against dashboard must be done.If new power brake boosters are being used,the length of push rod can be adjusted by turning it to right position using adjusting nut which will eventually lock nut.To complete,the last thing to do before hitting road again would be bleeding brakes again.

Genuine Subaru Forester Brake Booster

Brake Power Booster

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Subaru Forester PB001352 Vacuum Booster A
Part Number: 26402FJ010
$265.43 MSRP: $388.05
You Save: $122.62 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Vacuum Booster Assembly; Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2014-2015 Subaru Forester | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring | 2.5L H4
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Subaru Forester Vacuum Booster Assembly
Part Number: 26402SC010
$347.24 MSRP: $507.67
You Save: $160.43 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2009-2013 Subaru Forester | X, X Limited, X Premium, XS, XT, XT Limited | 2.5L H4 DOHC, 2.5L H4 DOHC Turbo, 2.5L H4 SOHC
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Subaru Forester Vacuum Booster Assembly
Part Number: 26402SA070
$360.38 MSRP: $526.87
You Save: $166.49 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2005 Subaru Forester | L.L.Bean, X, XS, XT | 2.5L H4, 2.5L H4 Turbo
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Subaru Forester Vacuum Booster Assembly LH
Part Number: 26402FJ110
$271.43 MSRP: $396.83
You Save: $125.40 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Vacuum Booster Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015-2018 Subaru Forester | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Touring | 2.5L H4
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Subaru Forester Vacuum Booster Assembly
Part Number: 26402FL010
$260.48 MSRP: $380.82
You Save: $120.34 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Vacuum Booster Ay
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2019-2021 Subaru Forester | Base, Limited, Premium, Sport, Touring
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Subaru Forester Vacuum Booster Assembly LH
Part Number: 26402FJ130
$277.64 MSRP: $405.90
You Save: $128.26 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Vacuum Booster Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2015-2018 Subaru Forester | 2.0XT Premium, 2.0XT Touring | 2.0L H4
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Subaru Forester PB001353 Vacuum Booster A
Part Number: 26402FJ030
$305.03 MSRP: $445.95
You Save: $140.92 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Vacuum Booster Assembly; Booster Assembly, Brake Booster
- Replaced by: 26402FJ032
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2014-2015 Subaru Forester | 2.0XT Premium, 2.0XT Touring | 2.0L H4
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Subaru Forester Vacuum Booster Assembly
Part Number: 26402FE420
Product Specifications
- Other Name: Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2008 Subaru Forester | Forester Sports, L.L.Bean, X, XS, XT | 2.5L H4, 2.5L H4 Turbo
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Subaru Forester Vacuum Booster Assembly C0U4
Part Number: 26402SA130
Product Specifications
- Other Name: Vacuum Booster Assembly; Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2008 Subaru Forester | Forester Sports, XT | 2.5L H4 Turbo
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Subaru Forester Vacuum Booster Assembly
Part Number: 26402SA060
Product Specifications
- Other Name: Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2003 Subaru Forester | X, XS | 2.5L H4
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Subaru Forester Vacuum Booster Assembly
Part Number: 26402FC200
Product Specifications
- Other Name: Booster Assembly
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002 Subaru Forester | L, S | 2.5L H4 SOHC
View related parts
Subaru Forester Vacuum Booster Assembly
Part Number: 26402FC070
Product Specifications
- Other Name: Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1998-2000 Subaru Forester | Base, L, S | 2.5L H4 DOHC, 2.5L H4 DOHC (New EVAPO), 2.5L H4 SOHC
View related parts
Subaru Forester Vacuum Booster Assembly
Part Number: 26402FC140
Product Specifications
- Other Name: Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2001 Subaru Forester | L, S | 2.5L H4 SOHC
View related parts
Subaru Forester Vacuum Booster Assembly C0U4
Part Number: 26402SA080
Product Specifications
- Other Name: Vacuum Booster Assembly; Booster Assembly, Brake Booster
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Forester | XT | 2.5L H4 Turbo

Subaru Forester Brake Booster

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Subaru Forester Brake Booster Parts Questions & Experts Answers

Vacuum Booster Assembly
26402SA070
Q: How to maintain and replace the power brake booster unit on Subaru Forester?
A: Also, the power brake booster unit does not need any special maintenance, but it may require a regular check on vacuum hose and its casing. To check if it is working properly press the pedal without starting the engine for several times; there should be no change in pedal reserve distance. Next, push the pedal and start your engine. If it slightly goes down, then everything is alright. For air tightness inspection, start an engine and switch off after one or two minutes of running. Then slowly depress the pedal. If on first depression the pedal goes further down and then gradually rises on second and third depressions means that booster is airtight. In addition to that, with your engine running,repeatedly press the brake pedal down until you stop the car by depressing the brake pedal at once,till when you have held down for 30 seconds without any change in reserve travel of pedal,this booster is airtight.In case this booster has malfunctioned ,it cannot be repaired but must be changed with a new or rebuilt unit. To take out this booster disconnect vacuum hose ,remove master cylinder as well.Then inside vehicle remove cotter pin,pushrod clevis pin to unlock brake booster pushrod clevis from behind brake pedals.Lastly remove four nuts from firewall that holds back up into place.Remove those four nuts from back side of firewall.Relatively speaking,it is simple for installation though tightening of those nuts which hold this booster against dashboard must be done.If new power brake boosters are being used,the length of push rod can be adjusted by turning it to right position using adjusting nut which will eventually lock nut.To complete,the last thing to do before hitting road again would be bleeding brakes again.