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TOMEI EXPREME EXHAUST MANIFOLD EJ20 for GDB C-G/GRB A-D/GVB C-D TWIN SCROLL

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Description

EXHAUST MANIFOLD 　for GDB/GRB/GVB

THE Φ42.7 - 45.0 MODEL
FOR HIGH POWER TUNED CARS.

APPLICATION：SUBARU IMPREZA WRX STI GDB C-G/GRB A-D/GVB C-D

PART NUMBER：414001

With many exhaust manifolds released so far, we've always designed our headers with Performance, Reliability and quality aspects in mind. Now we have a new model that is compatible with GDB, GRB and GVB. Introducing the highly acclaimed EJ twin scroll EXPREME header. With the very best of the TOMEI exhaust technology, this new design will deliver balanced optimised performance for power, torque and feeling.

■ Sensational Response!

■ More Power at High RPM.

■ Weight Reduction.

■ Dry Racing Sound

■ Durable

■ Equal Length Design

EXHAUST MANIFOLD　（1）

SUPPORT PIPE　（1）

E/G - EXH. - SUPPORT PIPE GASKET　（3）

TURBINE - FRONT PIPE GASKET　（1）

SUPPORT PIPE - TURBINE GASKET　（1）

CAP BOLT M10*L=*P=1.5　（3）

FLAT WASHER M10　（3）

FLANGE NUT M10*P=1.5　（3）

STUD BOLT M10*P=1.25　（5）

BOLT SMOOTH PASTE　（1）

BANDAGE BAND (Long*3 Short*8)　（11）

BANDAGE　（1）

TOMEI STICKER　（2）

EXPREME STICKER　（2）

INSTALLATION MANUAL　（1）

■THERMAL BANDAGE

The kit comes with a 50mm wide x
15m long (1.96" x 49ft) Thermal Bandage.

■DUAL SUPPORT PIPE

The kit also includes a Φ45.0mm
(1.8"), SUS304 material support pipe.

KEY DESIGN FACTORS

NON-STEPPED PORT DESIGN

REINFORCED FLANGE

LOST WAX COLLECTOR

	MATERIAL	FLANGE THICKNESS	LAYOUT	PORT EXIT ーCOLLECTOR	COLLECTOR ーSUPPORT PIPE	SUPPORT PIPE	PIPE THICKNESS	TOTAL WEIGHT
STOCK	ー	9.0mm	4-2-2	Φ42.7	Φ42.7	Φ42.7	1.5mm	13.1kg
TOMEI	SUS304	8.0mm	4-2-2	Φ42.7	Φ45.0	Φ45.0	2.0mm	9.7kg

PIPE DIAMETER

a : MAIN PIPE

Φ42.7

The 42.7mm pipe diameter was chosen from the exhaust port to the collector to retain the stock like response.

b : COLLECTOR

Φ45.0

A thicker than normal pipe was chosen to increase durability to handle high horsepower & high boost applications.

c : TURBO SUPPORT PIPE

Φ45.0

Guides the exhaust gases more efficiently to maximize the Turbos performance potential.　　　　　

BEND ANGLES

d : LEFT BANK

Top priority was given to this section, to be as close to straight as possible.

e : RIGHT BANK

A larger radial bend to the merging section was decided to minimize heat saturation to the oil sump.

f : MERGE SECTION

The acute angles allows a smooth extraction of gas flow from each bank.

FOR
STOCK TURBO POWERED CARS

EXHAUST MANIFOLD for GDB C-G

Specifications

SKU	414001
Brand	TOMEI
Shipping Weight	14.0000kg
Shipping Width	0.020m
Shipping Height	0.072m
Shipping Length	0.049m
Shipping Cubic	0.000071000m3

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