Blow-Off Valves

GReddy Blow Off Valves are easily adjustable to eliminate compressor surge and preventing premature boost leakage, while increasing boost response between shifts. Each valve is made of durable cast and billet aluminum frame and the valve to diaphragm ratio provides performance that cheap piston types cannot offer. The spring stiffness adjustment screw and the three different sizes give the GReddy user the option to match vehicles with mild upgrades to heavily tuned engines.

*(Counterfeit Warning)





Item Type Size Description PART #
Blow-off Valve Type R 47mm 11501660
Item: Blow-off Valve
Type: Type R
Size: 47mm
Notes:

Machined/Cast, 47mm valve, adjustable, 50mm outlet

280-450hp range

BOV gasket, nuts & bolts

Part #: 11501660
Price:
375.00Buy Now
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Blow-off Valve Type R 47mm

w/ Stiff Spring

11501661
Item: Blow-off Valve
Type: Type R
Size: 47mm
Notes:

Machined/Cast, 47mm valve, adjustable, 50mm outlet

over 375hp range

BOV gasket, nuts & bolts

Part #: 11501661
Price:
380.00Buy Now
IMAGES:
Blow-off Valve Type RZ 40mm 11501663
Item: Blow-off Valve
Type: Type RZ
Size: 40mm
Notes:

Gunmetal/Chrome, 40mm valve, adjustable, funnel outlet

100-400hp range

BOV gasket, nuts & bolts

Part #: 11501663
Price:
275.00Buy Now
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BOV Flange Steel

for Type R / RZ / RS / S

11900450
Item: BOV Flange
Type: Steel
Size:
Notes:

[Discontinued]

Part #: 11900450
Price: 35.00
BOV Flange Aluminium

for Type R / RZ / RS / S

11900451
Item: BOV Flange
Type: Aluminium
Size:
Notes:

Universal GReddy Blow off Valve Flange, Gasket, Nuts & Bolts

Aluminum (weld-on)

Piping OD 52m & ID 42mm

compatiable with all GReddy Blow-off Valves: Type-R, Type-RZ, Type-RS, & Type-S

Part #: 11900451
Price:
42.00Buy Now
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BOV Outlet Type S 16mm 11900481
Item: BOV Outlet
Type: Type S
Size: 16mm
Notes:

Optional 16mm outlet adapter

for Type S BOV

Part #: 11900481
Price:
15.45Buy Now
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BOV Outlet Type S 19mm 11900482
Item: BOV Outlet
Type: Type S
Size: 19mm
Notes:

Optional 19mm outlet adapter

for Type S BOV

Part #: 11900482
Price:
15.45Buy Now
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BOV Outlet Type S 29mm 11900483
Item: BOV Outlet
Type: Type S
Size: 29mm
Notes:

Optional 29mm outlet adapter

for Type S BOV

Part #: 11900483
Price:
15.45Buy Now
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BOV Outlet Type RZ 19mm 11900515
Item: BOV Outlet
Type: Type RZ
Size: 19mm
Notes:

Optional 19mm outlet adapter

for Type RZ BOV

Part #: 11900515
Price:
20.00Buy Now
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BOV Outlet Type RZ 29mm 11900516
Item: BOV Outlet
Type: Type RZ
Size: 29mm
Notes:

Optional 29mm outlet adapter

for Type RZ BOV

Part #: 11900516
Price:
20.00Buy Now
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BOV Outlet Type RZ 32mm 11900517
Item: BOV Outlet
Type: Type RZ
Size: 32mm
Notes:

Optional 32mm outlet adapter
for RZ bov

Also fits Type RS

Previously 11900513 (blue) for Type RS

Part #: 11900517
Price:
21.00Buy Now
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BOV Outlet Type RZ 34mm 11900518
Item: BOV Outlet
Type: Type RZ
Size: 34mm
Notes:

Optional 34mm outlet adapter

for Type RZ BOV

Part #: 11900518
Price:
21.00Buy Now
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BOV Outlet Type R 40mm 11900490
Item: BOV Outlet
Type: Type R
Size: 40mm
Notes:

Optional 40mm outlet adapter

for Type R BOV

Part #: 11900490
Price: 15.00
BOV Outlet Type R 45mm 11900491
Item: BOV Outlet
Type: Type R
Size: 45mm
Notes:

Optional 45mm outlet adapter

for Type R BOV

Part #: 11900491
Price: 15.00
BOV Outlet Type R 19-21mm 11900470
Item: BOV Outlet
Type: Type R
Size: 19-21mm
Notes:

Optional 19-21mm outlet adapter

for Type R BOV

Part #: 11900470
Price: 18.00
BOV Outlet Type R 28-35mm 11900471
Item: BOV Outlet
Type: Type R
Size: 28-35mm
Notes:

Optional 28-35mm outlet adapter

for Type R BOV

Part #: 11900471
Price: 18.00
BOV Outlet Type RZ Funnel 11900519
Item: BOV Outlet
Type: Type RZ
Size: Funnel
Notes:

Optional 8port funnel outlet adapter

for Type RZ BOV

Part #: 11900519
Price:
21.00Buy Now
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BOV Replacement Diaphragm Type R

Type R, Type R Stiff

99900062
Item: BOV Replacement Diaphragm
Type: Type R
Size:
Notes:
Part #: 99900062
Price:
82.50Buy Now
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BOV Replacement Diaphragm Type RZ

Type RZ, RS & S

99900036
Item: BOV Replacement Diaphragm
Type: Type RZ
Size:
Notes:
Part #: 99900036
Price:
80.00Buy Now
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BOV Replacement Gasket Type RZ / R

Type RZ, RS, S, R, R-Stiff

BOVGASKET
Item: BOV Replacement Gasket
Type: Type RZ / R
Size:
Notes:

Replacement gasket for all GReddy Blow-Off Valves
Type RZ, Type RS, Type S, Type R and Type R Stiff Spring

Gasket seals between GReddy BOV and Blow off Valve Flange

Part #: BOVGASKET
Price:
2.00Buy Now
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BOV Spring Type R

Standard

11900501
Item: BOV Spring
Type: Type R
Size:
Notes:
Part #: 11900501
Price:
37.50Buy Now
IMAGES:
BOV Spring Type R

Stiff

11900510
Item: BOV Spring
Type: Type R
Size:
Notes:
Part #: 11900510
Price:
40.00Buy Now
IMAGES:
Hyundai Genesis Coupe 2.0T 2010-

BOV Kit

11599501
Item: Hyundai
Type: Genesis Coupe 2.0T
Size: 2010-
Notes:

4cylinder Turbo 2.0T

Type RS BOV

with adapter & recirc. tube

reciruclates back into air intake

Part #: 11599501
Price: 420.00
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Mazda RX-7 Turbo 1987-92

BOV Kit

11541201
Item: Mazda
Type: RX-7 Turbo
Size: 1987-92
Notes:

(FC3S) 13B

Type RZ with adapter

Part #: 11541201
Price: 425.00
IMAGES:
Mazda RX-7 T/T 1993-96

BOV Kit

11541202
Item: Mazda
Type: RX-7 T/T
Size: 1993-96
Notes:

(FD3S) 13B-REW

Type RZ BOV with adapter

Part #: 11541202
Price: 340.00
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Mitsubishi Evolution 8/9 2003-07

BOV Kit

11531202
Item: Mitsubishi
Type: Evolution 8/9
Size: 2003-07
Notes:

(CT9A) 4G63

with Type RZ BOV
recirculates into air intake
or open with included parts

(previously 11531111 w/ RS)

Part #: 11531202
Price: 325.00
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Mitsubishi Eclipse GST/GSX 1995-99

BOV Kit

11531107
Item: Mitsubishi
Type: Eclipse GST/GSX
Size: 1995-99
Notes:

(2G Eclipse)  4G63

Type RS BOV

recirculates back into intake

Part #: 11531107
Price: 280.00
IMAGES:
Mitsubishi Evolution X 2008-on

BOV Kit

11531205
Item: Mitsubishi
Type: Evolution X
Size: 2008-on
Notes:

(CZ4A) 4B11

Type RZ BOV

Blow off Valve Adater Kit for factory piping

Recirculates back into air intake

or plug for open to atmosphere.

Part #: 11531205
Price: 410.00
IMAGES:
Nissan GTR 2009-on

BOV Kit

11521133
Item: Nissan
Type: GTR
Size: 2009-on
Notes:

(R35) VR38DETT

2x Type RZ w/ adapters

for stock piping

recirculates back into air intake

Part #: 11521133
Price: 550.00
IMAGES:
Nissan S14/S15

BOV Kit

11521202
Item: Nissan
Type: S14/S15
Size:
Notes:

(S14 & S15) SR20DET

Type RZ w/ adapters

for stock piping

recirculates back into air intake

Part #: 11521202
Price: 400.00
Relief Valve

pop-off valve

11501710
Item: Relief Valve
Type:
Size:
Notes:

adjustable pop-off valve, 0.8-2.0kg/cm2

Part #: 11501710
Price: 180.00
IMAGES:
Relief Valve Flange 11900520
Item: Relief Valve Flange
Type:
Size:
Notes:

square aluminum flange

4bolt flange w/ center RV thread

Part #: 11900520
Price: 39.50
Subaru WRX/STI 2002-05

BOV Kit

11561203
Item: Subaru
Type: WRX/STI
Size: 2002-05
Notes:

(GDB) EJ20 / EJ25

with Type RZ BOV
with adapter & recirc. tube
reciruclates back into air intake
or open with included parts

o(Previously 11561110 with RS)

Part #: 11561203
Price: 450.00
IMAGES:
Toyota Supra T/T 1993-97

BOV Kit

11511210
Item: Toyota
Type: Supra T/T
Size: 1993-97
Notes:

w/ Type RZ BOV

(JZA80) 2JZ-GTE

Part #: 11511210
Price: 365.00
IMAGES:
Volkswagen Golf/Jetta 1998-05

BOV Kit

11599500
Item: Volkswagen
Type: Golf/Jetta
Size: 1998-05
Notes:

Golf/Jetta IV  1.8T

Type RS & adapter

recirculates back into air intake

Part #: 11599500
Price: 295.00
IMAGES: