Item Search

Parts Number or Product Name

Don't view out of stock

Show also repair parts

Main Category

Sub Category

Make

Model

Engine

EXHAUST MANIFOLD EXPREME S13/S14 KA24DE TURBO TYPE Ver.2

parts #	TB601A-NS16B
msrp	$1,090.00
engine	NISSAN KA24DE
model	NISSAN 13 240SX, NISSAN 14 240SX
main category	SUS EXHAUST
sub category	EXHAUST MANIFOLD
shipping size	15 x 13 x 9 inch / 39 x 34 x 24 cm
shipping weight	16 lbs / 8 kg
qty in stock	23
note	In Stock Now!

Resources

Item Description

The KA24 Turbo Exhaust Manifold is Back– “Refined to Shine, Reinforced to Perform!”

MAKER	ENGINE	MODEL
NISSAN	KA24DE	240SX

Overview

TOMEI USA is proud to announce the re-release of the KA24 Turbo Exhaust Manifold!

We have enhanced materials and manufacturing while preserving the original design, achieving greater durability, performance, and a sleek appearance.
Since its launch in 2015, this manifold has earned high praise from 240SX S13/S14 owners.
Designed for seamless compatibility with SR20 components, it enables efficient turbocharging for KA24 engines, delivering a significant performance boost.
However, due to mold deterioration, production was discontinued in 2022.
Now, after three years of development, it returns with major refinements.
We upgraded from cast iron to high-quality stainless steel, using advanced lost-wax casting for superior durability, heat resistance, and easier installation.
Optimized for the KA24’s long-stroke design, this manifold delivers smooth, torque-rich power, excelling in both daily driving and high-performance applications.
We appreciate your patience and support. This is our best version yet, and we hope all KA24 enthusiasts will enjoy its benefits.
Unlock the full potential of Nissan’s KA24 engine with this advanced turbocharging solution!

SPEC

MATERIAL		Austenitic Ductile Cast iron
LAYOUT		4-2-1
PIPE THICKNESS		5.0mm
PIPE DIAMETER	INT I.D	40.0mm(Approx.)
	OUT I.D	48.6mm(Approx.)
FLANGTE THICKNESS	F	13.0mm
	R	14.0mm
FLANGE TYPE	R	-
	R	T25
WEIGHT		5.6kg

Renewal Points

Material / Manufacturing Method
Upgraded the material from cast iron to stainless steel heat-resistant cast steel.
Adopted the lost-wax casting method, achieving superior precision and durability

Performance
Basic Performance Maintenance
The design adheres to conventional principles, maintaining baseline performance characteristics.
Enhanced Heat Resistance
Improved heat resistance from 700–800°C to over 1,000°C, significantly enhancing durability under high-temperature conditions.
Improved Corrosion Resistance
Reduces rust formation, preserving an aesthetically pleasing appearance over an extended period.
Optimized Intake Temperature
Lower engine bay temperatures contribute to improved intake temperatures, enhancing overall engine efficiency.

	TOMEI		Company A	Company B
	New model	Previous model	Company A	Company B
Heat resistance	1000℃	700-800℃	800℃	700℃
Thermal Fatigue resistance	◎	○	○	△

Appearance Improvement

Smooth and seamless finish, enhancing the factory-like aesthetic.

Beautiful silver-toned exterior, providing a premium and long-lasting visual appeal.

Characteristics of KA24

The KA24 engine features a long 96mm stroke, making it less suitable for high RPMs despite being a naturally aspirated (NA) engine.

While the KA24 is not originally equipped with a turbocharger, it is, in fact, highly compatible with forced induction.

Turbocharging enhances the inherent benefits of its long-stroke design, significantly increasing low- to mid-range torque.

As a result, it enables a more enjoyable and dynamic driving experience, whether in city traffic or on the racetrack, delivering both power and comfort across various driving conditions.

Compatibility with SR20DET Parts

・The exhaust manifold is designed to position the turbo in the same location as on SR20DET-equipped vehicles, such as the Nissan Silvia and 180SX.
・It offers broad compatibility with OEM SR20 parts, including:
・Turbochargers
・Turbo Outlet pipes (Elbow pipe)
・Front pipes
・This design allows KA24 owners to seamlessly experience turbocharged performance, as if a factory KA24DET variant existed.
・Prioritizing ease of installation and a factory-like appearance, the manifold is engineered to fully unlock the potential of the KA24 engine.

KA24 to KA24DET

EXHAUST MANIFOLD EXPREME
S13/S14 KA24DE TURBO TYPE
TB601A-NS16B

TURBOCHARGER ARMS KA24DE

JOURNAL BEARING	MX7960	TB401A-NS16C
JOURNAL BEARING	MX8270	TB401A-NS16D
BALL BEARING	MX7960	TB403A-NS16C
BALL BEARING	MX8270	TB403A-NS16D

INTERCOOLER PIPING KA24DE
TB410A-NS16A

TURBINE OUTLET PIPE EXPREME
SILVIA/180SX SR20DET
TB6020-NS08C

FULL TITANIUM MID PIPE EXPREME Ti
NISSAN TYPE-A
TB6100-NS00A

FULL TITANIUM MUFFLER EXPREME Ti

SILVIA/180SX/240SX (R)PS13 SR20DET/KA24DE	TB6090-NS08A
SILVIA/240SX S14 SR20DET/KA24DE	TB6090-NS08B

＊Please use an intercooler equivalent to the GREDDY SPEC-LS TYPE-24E

Comparison with Other TOMEI Exhaust Manifolds

Our exhaust manifolds for the RB26 and 4G63 engines adopt SUS304 stainless steel welding construction, aiming to improve performance, reduce weight through thinning, and enjoy a higher-pitched engine sound.On the other hand, the "KA24 Exhaust Manifold" is designed with the premise of turbocharging a naturally aspirated (NA) engine. It emphasizes a factory-like appearance and high durability. By adopting the lost-wax casting method, it allows for a seamless turbo conversion and delivers comfortable performance even in city driving.

RB26

4G63

Proven Technology from the SR20DET Manifold

・Incorporates the same unequal-length design used in our SR20DET manifold, ensuring exceptional turbo spool response.

・As a result, it delivers a smooth and highly responsive turbocharged driving experience, tailored for KA24 enthusiasts.

・With its combination of enhanced durability, seamless installation, and compatibility with existing SR20 parts, the KA24 Exhaust Manifold is a premier choice for those seeking to upgrade their KA24 engine for a more refined and powerful driving experience.

EXHAUST MANIFOLD Description

PERFORMANCE

TEST MODEL

The Engine Dyno graph on the left shows the overall perforamnce increase throughout all RPM ranges to give the overall improved performance results. This was achived with extensive engine bench testing time from our R&D.

This is the results based on the Z33 (350Z) exhaust manifold (headers) + straight front pipes which brings out the overall higher performance throughout the entire RPM range.

STRIVING for PERFECTION

The Engine Dyno graph on the left shows the overall perforamnce increase throughout all RPM ranges to give the overall improved performance results. This was achived with extensive engine bench testing time from our R&D.

This is the results based on the Z33 (350Z) exhaust manifold (headers) + straight front pipes which brings out the overall higher performance throughout the entire RPM range.

ROAD TEST

All data is logged and tested for accruate testing and attention to detail on the products efficiency for finding the best results.

LIGHTER

Case Example: Lancer Evolution where the exhaust is situated at the front of the car, every bit of weight reduction there helps a lot in improving the handling of the cars cornering characteristics. Every bit helps for you to gain that extra edge over your rivals.

QUALITY

LOST WAX PROCESSED

EXPREME is manufactured from various manufacturing methods combined especially for mass production high quantity. But the flange, bend sections & gathering section are finished off with lost wax processing for superior quality.

The benefits of "Lost Wax" Processing

* Stable High Quality

* High Intensity

* Durable

(Smooth inner walls & killer looks)

Lost wax processed on the gathering section and flange

SUS304 MATERIAL

The EXPREME products are made from stainless steel SUS304 material. It is light weight, has best resistance to corrosion, superior in heat resistance, better exhaust race harmonics, helps increase your cars value.

QUALITY CONTROL

All EXPREME products are screened with strict quality control. Even mass productions our QA levels are high to ensure the best possible product that will be worthy of the TOMEI brand name and guaranteed to meet & exceed all users expectations.

* Main Inspection Points

* Each Section Size

* Flange Quality

* No signs of burr or flash

* No signs of scratches or leaks

* Installation tested

* Weight is checked

* There are more inspection points but each product has different extra points addressed.