HKS 33004-BT003 Stainless Front Pipe Instruction Manual

: June 13, 2024
: HKS

Table of Contents

HKS 33004-BT003 Stainless Front Pipe
Product Information
Product Usage Instructions
Confirm Befo re Installation
Foreword
Product Precautions
Installation Precautions
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HKS 33004-BT003 Stainless Front Pipe

HKS-33004-BT003-Stainless-Front-Pipe-product

Product Information

The HKS Exhaust System User & Installation Manual provides information on the installation and usage of the HKS STAINLESS FRONT PIPE. The product is designed for the following applications: SCION FR-S, TOYOTA 86, TOYOTA GR86, and SUBARU BRZ. The part number for this product is 33004-BT003.

The Parts List includes the following components:

Front Pipe – Quantity: 1
Gasket (68) – Quantity: 1
Manual – Quantity: 1
Sticker – Quantity: 1

Product Usage Instructions

Before proceeding with the installation, please ensure that all the parts listed in the Parts List are included in the kit.
When handling the product, exercise caution to avoid dropping or subjecting it to excessive impact. Failure to do so may result in product damage or improper installation.

Product Precautions

When the engine is turned on or immediately after it is stopped, the exhaust manifold, exhaust pipe, catalyst, and muffler are extremely hot. Avoid touching the section that exits the rear of the vehicle to prevent burns. Take caution around the surroundings when stopping or parking the car.
Avoid spilling oil or brake fluid on the exhaust manifold as it could burst into flames. Exhaust gases contain toxic substances, and there is a risk of carbon monoxide poisoning if inhaled.
Periodic inspection and service are essential for safety and pollution prevention. Ensure routine inspections are conducted and replace parts if necessary.
While the product is made from carefully selected materials and manufactured under strict quality control standards, it may corrode or develop holes earlier than expected if driven under adverse conditions. Additionally, road debris can cause damage or holes in the product, leading to exhaust gas leakage.
Removing the catalytic converter or its interior components is prohibited by law due to environmental pollution concerns. Refrain from any such actions.
Exhaust components on automobiles can reach very high temperatures. Avoid leaving the vehicle over dry grass or other flammable materials with the engine running or immediately after turning off the engine to prevent fire hazards. Park the vehicle in an area without flammable objects underneath it.

By following these instructions and precautions, you can safely install and use the HKS STAINLESS FRONT PIPE exhaust system.

Confirm Befo re Installation

Part Number: 33004-BT003
Name of Product: STAINLESS FRONT PIPE
Application:
- SCION FR-S
- TOYOTA 86
- TOYOTA GR86
- SUBARU BRZ

Make sure that all the parts listed in the Parts List below are included in the kit.
Be careful when handling this product; avoid dropping or subjecting it to excessive impact. Failure to do so may result in product damage or improper installation.

	Parts List / Hardware	QT.
①	Front Pipe	1
②

Gasket (φ68)

|

1

③| Manual|

1

④| Sticker| 1

Part Number: 33004-BT003
Name of Product: STAINLESS FRONT PIPE
Application:
- SCION FR-S
- TOYOTA 86
- TOYOTA GR86
- SUBARU BRZ

Thank you for purchasing HKS exhaust system. Please read this User & Installation Manual thoroughly before using this product so that you will understand and use product correctly. Please conﬁrm that the contents are correct before installation on the vehicle.

Foreword

Replacing exhaust systems entails dangerous work that only mechanics with specialized training should perform in an automobile service shop with adequate facilities. For untrained customers to install an unfamiliar product could be dangerous as it could result in injury and/or severe burns. Please request a specialist service shop to do the installation.
Do not perform any illegal modiﬁcations on this product, such　as cutting the pipe and/or removing the internal components of the muﬄer.
Our company shall not bear any responsibility should you, the　customer, or a third-party cause a breakdown of the product and its auxiliary product through modiﬁcation or disassembly, or for damages caused by problems resulting from its misuse.
This product and its parts may be revised without warning to the customer.
Due to regulations, it is not legal to drive any vehicle with the catalytic converter or any other emission device removed or modiﬁed (Unless speciﬁed by local regulations).

Product Precautions

When the engine is turned on or immediately after it is stopped, the exhaust manifold, exhaust pipe, catalyst and muﬄer are extremely hot. Be extra careful not to touch the section that exits the rear of the vehicle. You may suﬀer burns if you touch this or any section of the exhaust system. Please note that when you load or unload items from the trunk, your clothing could burn or melt if it touches the tail-pipe. Please take caution around the surroundings when you stop or park the car.
Oil or brake ﬂuid split on the exhaust manifold could burst into ﬂames.
Exhaust gases contain toxic substances. There is always a danger of carbon monoxide poisoning if you continue to work in a poorly ventilated garage or warehouse with the engine running. Always turn oﬀ the engine and check for adequate ventilation before working in an enclosed space. Be especially careful when pets and children are near the installation site. Take note of wind direction when running a vehicle near people.
This aftermarket exhaust improves exhaust eﬃciency and enhances the performance characteristics of the vehicle. Make certain that the brakes have been serviced completely and verify the brake performance and safety check all under carriage components.
This exhaust system is designed to have a safe clearance from the road surface with the vehicle at standard (stock) height. Therefore, if the vehicle is modiﬁed and body height is lowered to an extremely low level, the muﬄer could become damaged or may damage other objects when it comes in contact with the road surface or protruding objects. Please do not lower the height of the vehicle to extreme levels because exhaust gas could leak from a damaged exhaust system.
Even if parts in the emission system are used correctly, there is the possibility of deteriorating sound muﬄing performance from toxic substances in the exhaust gases or corrosion causing holes in the product depending on the usage of the automobile. If this is the case, please consult promptly with your dealer or service shop. If the product had lost its original capabilities, please have it exchanged with the same product.
If corrosion is left untended, this could cause ﬁre from leakage of exhaust gas under the lower part of the chassis. Moreover, the driver could be ﬁned for driving a poorly maintained vehicle.
It is the legal responsibility of the driver to safely upkeep his/her car. Periodic inspection and service is essential for safety and to prevent pollution. Be certain that routine inspections are made as well as periodic inspections and parts replacement if necessary.
While the product of our company uses carefully selected materials, and the product is manufactured under strict quality control standards in consideration of durability, the product could corrode and develop holes at an unexpectedly early stage if the vehicle is driven under adverse conditions. Moreover, the product could be hit by small rock and other road debris that may damage or cause holes in the product. Please be very careful because this could cause leakage of exhaust gases.
The law prohibits the removal of the catalytic converter or removing the interior components of it. Please refrain from such action as this could lead to environmental pollution.
Exhaust components on automobiles sometimes reach very high temperatures. Do not leave the vehicle over dry grass or other ﬂammable materials with the engine running or even after immediately turning oﬀ the engine.
This could cause a ﬁre. Please stop or park your vehicle in an area where there are no ﬂammable objects under the vehicle.
When using your vehicle, refrain from revving or idling the engine for extended periods of time. This could cause deterioration of the sound muﬄing material in the muﬄer. The heat from stagnant exhaust could cause breakdowns of electrical parts and auxiliary parts in the engine compartment.
Do not store or leave vehicle in humid areas or where salt is prevalent. This could cause deterioration and corrosion of parts.
Please understand that using your vehicle in various types of races, circuit runs and other special use could markedly lower the durability of the product.

Installation Precautions

When installing the product, make sure all instructions are followed precisely. Use a torque wrench and tighten the screws to the regulation (factory) torque so as to prevent the screws from loosening while the vehicle is in operation.
Exhaust manifolds and catalytic converters can become extremely hot during usage. Coming in contact with a hot exhaust system may result in severe burns. Only work on the vehicle after it cools down. Please use heat resistant gloves during service to prevent burns.
Rust may make it diﬃcult to loosen the nuts and bolts on the exhaust system. Use a spray-type lubricant and the correct tools to loosen the nuts and bolts and refrain from using excessive force that may cause the nuts and bolts to break. Always use heat-resistant gloves to prevent injury to hands.
Exhaust system replacements are usually performed underneath of the vehicle. It is dangerous to replace the system if the lifted vehicles is in an unstable condition. Be certain to work safely by using a speciﬁed lifting machine for vehicles. Never work underneath of the vehicle lifted only by a standard car jack, as this could be extremely dangerous.
Replacing of an exhaust system entails simultaneous tightening of nuts and bolts located separately, and working in situations where a heavy system is supported from below. Therefore,working alone could be very dangerous. Always work with two or more persons.
Be careful to maintain the proper clearance when installing a new exhaust system. Please be particularly careful when working near brakes, fuel line, drivetrain and electrical systems.
If you ﬁnd cracks and other deterioration in the rubber exhaust hangers, replace them with the vehicle manufacturer’s new standard parts.
After the standard (stock) exhaust system is removed, disassemble them into shortest possible pieces and store them horizontally to allow for and moisture dissipation.
In some instances it may be necessary to cut the stock exhaust into two pieces to remove it. The factory exhaust was installed before the rear suspension was installed on the vehicle.

The replacement HKS exhaust system will bolt directly on and does not require any modiﬁcation ( to the vehicle or the exhaust system).

Removal of Stock Exhaust System
- Lift up the vehicle (Use a lift speciﬁed automobiles).
- Remove the stock exhaust system in accordance with the vehicle manufacturer’s repair manual.
Temporary Installation of Intermediate Pipe
- Insert the included gaskets onto the stud bolt protruding from the ﬂange in the catalyst section. Install the front ﬂange of the intermediate pipe by placing the pipe in the correct position. Install the nut and temporarily tighten it.
- Slide the rubber hanger over the suspending hook attached to the intermediate pipe. Reuse the stock rubber hanger or replace it with a new one if necessary.
Temporary Installation of Main Muﬄer
- Place the main muﬄer in the correct position and attach the suspension hook on the main muﬄer to the stock rubber hanger.
- Install the included gaskets between the rear and front ﬂanges of the intermediate pipe.
  Place the plain washer onto the attached bolt and insert the bolt from the front end while inserting from the opposite side the attached plain washer, spring washer and nut. Temporarily tighten the nut.
Complete System Installation
- Verify the interrelated positions of the intermediate pipe, main muﬄer, clearance between the ﬂoor of the vehicle and the exhaust,cross member and other peripheral parts and the slippage of the gasket between the ﬂanges.
  Tighten the bolts and nuts starting in the front of the vehicle in accordance with the designated torque (See the factory service manual for correct torque speciﬁcations).
- Verify the position and clearance of the tip and the vehicle’s bumper. If they are not correct, retighten them from the beginning. If there is insuﬃcient clearance, this could cause abnormal noise, or the bumper could melt by the heat if the bumper is made of plastic.
Verifying a Correct Installation
- When the entire system has been completely installed, shake the exhaust system with your hand again to verify the clearance of each section.
- Start and warm up the engine, and rev it up to about 2,500 rpm and check for exhaust leaks from the respective ﬂanges and for abnormal noise or vibration from various sections.
- Test drive the vehicle and inspect the system again for exhaust leaks from the ﬂanges and abnormal noises.
- If any problems are found, recheck the installation process, disassemble and install the system all over again if necessary.