2004 Lexus IS300 Transmission Parts

Below you will find various in-demand Lexus Transmission Parts, components and accessories for your 2004 IS300. Advance Auto Parts has popular IS300 parts like Transmission Mounts, Transmission Electrical Parts, Automatic Transmission Pan and Gaskets and more. You’ll also find aftermarket and OEM Transmission Parts for other IS300 model years including 2003, 2005, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and more. Select a category of 2004 Lexus IS300 Transmission Parts below and start saving instantly.

Please Select your Vehicle to See Exact Fit Parts

Popular 2004 Lexus IS300 Transmission Parts Categories

Transmission Torque Converters

Back Up Lamp Switches

Transmission Pan Gaskets

Transmission Mounts

Back Up and Neutral Safety Switches

Transmission Oil Pan Gaskets

Powertrain Control Module Relays

Transaxle Output Speed Sensors

Speed Sensors

Automatic Transmission Oil Pump Seals

Torque Converter Seals

Extension Housing Seals

Shaft Seals

Automatic Transmission Drain Plug Gaskets

Front Pump Seals

Input Shaft Seals

Automatic Transmission Repair Sleeve

Essential Transmission Parts for 2004 Lexus IS300s

from

$21.29

AT EXT HOUSING SEAL

from

$80.99

Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.

Product Features:

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure accurate signal output providing product reliability, every time.

from

$15.29

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today¿s vehicles.

Product Features:

Design type: spring loaded; single-lip
Temperature range: -20 deg. F to 300 deg. F / -29 deg. C to 49 deg. C
Resistance to EP lubricants
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$158.99

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Neutral Safety Switch prevents the engine from starting unless the transmission is in neutral or park, enhancing safety by reducing the risk of accidental movement while starting the vehicle. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

from

$11.79

AT OIL PAN GASKET

from

$43.49

Product Features:

Brand may vary by location

from

$169.99

Remanufactured using industry-leading techniques to assure enhanced torque performance and extended life. Each unit is harmonically balanced and leak tested with any inherent OE weaknesses corrected. Pro-King torque converters are subject to random ISO 9001 quality tests before leaving the factory.

Product Features:

Meets or exceeds OE specifications

from

$20.62

Automatic Transmission Seal

from

$62.99

The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$5.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$256.99

Carquest Premium anti-lock brake system (ABS) wheel speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium ABS sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each ABS sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium ABS sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
O-rings or seals are included (where applicable)
Weather-tight connectors prevent leaks and corrosion for longer life
Includes all necessary brackets and grommets for easier installation
Extensive design validation testing and 100% end-of-line tested
Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$262.99

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
O-rings or seals are included (where applicable)
Weather-tight connectors prevent leaks and corrosion for longer life
Includes all necessary brackets and grommets for easier installation
Extensive design validation testing and 100% end-of-line tested
Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$56.99

Anchor 9649 This mount supports the transmission and dampens vibration. Each mount is specifically engineered and designed to OE standards. Natural and SBR rubber provide maximum life and performance. Steel fasteners are heat treated grade 5 bolts. A special bonding agent is used to ensure a rubber to metal bond. Rubber material is mixed to specific Durometer, hardness.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlok bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 2006-2021
Weight approx: 1 Lbs

from

$64.99

Anchor 9623 This mount supports the transmission and dampens vibration. Each mount is specifically engineered and designed to OE standards. Natural and SBR rubber provide maximum life and performance. Steel fasteners are heat treated grade 5 bolts. A special bonding agent is used to ensure a rubber to metal bond. Rubber material is mixed to specific Durometer, hardness.

Product Features:

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlok bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 1998-2005
Weight approx: 2 Lbs

from

$48.49

This transaxle output speed sensor is designed to match the fit and function of the original sensor on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this transaxle output speed sensor is designed to match the fit and function of the original sensor on specified vehicles
Ideal solution – this sensor is a reliable replacement for an original part that has failed due to fatigue or electrical malfunction
Durable construction – this sensor is made from quality components to ensure reliable performance and a long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$64.99

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Back Up Light Switch automatically activates the rear backup lights when the vehicle is shifted into reverse. This improved visibility for the driver and alerts other vehicles or pedestrians when the vehicle is reversing, reducing the risk of accidents. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

from

$10.29

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$4.29

These automatic transmission drain plug gaskets are designed to match the fit and function of the original gaskets required to repair the drain plug on specified vehicles, and are made of durable materials for reliable service.

Product Features:

Direct replacement – these automatic transmission drain plug gaskets are designed to match the fit and function of the original gasket required to repair the plug on specified vehicles
Ideal solution – recommended for replacement when transmission is serviced, or for an original gasket that is leaking
Durable construction – these parts are made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$11.99

Product Features:

Design type: spring loaded; single-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$6.49

Product Features:

Brand may vary by location

Upgrade your 2004 Lexus IS300 with Top-Quality Transmission Parts

When it comes to maintaining or upgrading your 2004 Lexus IS300, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Lexus or enhancing its overall performance, Transmission Parts are key to keeping your IS300 functioning at its best. At Advance Auto Parts, we offer a wide selection of 22 Transmission Parts for the 2004 Lexus IS300, designed to meet your needs without breaking the bank. From Transmission Mount replacements to Transmission Electrical Parts upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Transmission Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Transmission Parts for your 2004 Lexus IS300 at great prices. Our Transmission Parts inventory for this model ranges from just $4.29 to $279.99, with an average price of $66.72. Our 22 Transmission Parts in stock come from 11 trusted brands, so you’re sure to find the right part for your 2004 Lexus IS300 without overspending.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Transmission Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2004 Lexus IS300 is always ready to roll. We’re committed to providing you with everything you need to keep your IS300 in top shape, all in one place. Start shopping confidently below for your 2004 Lexus IS300!

Best-Selling Transmission Mounts for 2004 Lexus IS300s

Enhance the driving experience in your Lexus with 1 quality Transmission Mount components, starting at $64.99.

show more show less

from

$64.99

MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
SUPERIOR BOND: A special Chemlok bonding agent is used to ensure a superior rubber-to-metal bond.
HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
For Years: 1998-2005
Weight approx: 2 Lbs

Most Popular 2004 Lexus IS300 Transmission Electrical Parts

Customize your Lexus with 4 Transmission Electrical Parts products like Speed Sensors and Powertrain Control Module Relays, all priced under $279.99.

show more show less

from

$279.99

Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
O-rings or seals are included (where applicable)
Weather-tight connectors prevent leaks and corrosion for longer life
Includes all necessary brackets and grommets for easier installation
Extensive design validation testing and 100% end-of-line tested
Fluorocarbon high-temperature o-ring seals coated with lubricant for easy installation prevents hub contamination.
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

from

$80.99

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure accurate signal output providing product reliability, every time.

from

$81.99

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
100% end-of-line tested to ensure accurate signal output providing product reliability, every time.

from

$83.99

Carquest Premium vehicle speed sensors are designed to perform in harsh environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium vehicle speed sensors are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each vehicle speed sensor undergoes extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium speed sensors are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

Designed to meet or exceed OE specifications for fit, form and function
O-rings or seals are included (where applicable)
Magnet size and strength optimized for precise signal output.
Weather-tight connectors prevent leaks and corrosion for longer life
Extensive design validation testing and 100% end-of-line tested
Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

Top Picks for 2004 Lexus IS300 Automatic Transmission Pan and Gaskets

Upgrade Lexus IS300s with top-quality Automatic Transmission Pan and Gaskets parts, including 3 OEM and aftermarket selections for your 2004 model.

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from

$5.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$11.79

AT OIL PAN GASKET

from

$4.29

Direct replacement – these automatic transmission drain plug gaskets are designed to match the fit and function of the original gasket required to repair the plug on specified vehicles
Ideal solution – recommended for replacement when transmission is serviced, or for an original gasket that is leaking
Durable construction – these parts are made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

In-Demand Transmission Seals for 2004 Lexus IS300s

Select from 6 premium Transmission Seals parts for your 2004 Lexus IS300, with prices ranging from $6.49 to $43.49.

show more show less

from

$10.29

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$11.99

Product Features:

Design type: spring loaded; single-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$6.49

Product Features:

Brand may vary by location

from

$43.49

Product Features:

Brand may vary by location

from

$21.29

AT EXT HOUSING SEAL

from

$20.62

Automatic Transmission Seal

Most Sold 2004 Lexus IS300 Automatic Transmission Parts

Explore our best-selling Lexus parts for the 2004 IS300 among 1 OEM and aftermarket options starting from $62.99.

show more show less

from

$62.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

FAQs for 2004 Lexus IS300 Transmission Parts

Which Transmission Parts are best-sellers for 2004 Lexus IS300s?

Out of 22 Transmission Parts that fit 2004 Lexus IS300s, the following parts are the top sellers:

Multi Purpose Seal (18442700) – $15.29
Automatic Transmission Remanufactured Torque Converter (10573063) – $169.99
Shaft Repair Sleeve (3271749) – $37.99

What’s the price range for 2004 Lexus IS300 Transmission Parts?

Transmission Part prices for the 2004 Lexus IS300 start at $4.29 and go up to $279.99 for the most premium parts.

What’s the average price of a Transmission Part for a 2004 Lexus IS300?

The average price for Transmission Parts for the 2004 Lexus IS300 is $66.72. Keep in mind the variety of part types within our Transmission Part category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Parts for other Lexus IS300 model years?

Yes, we currently carry Transmission Parts for 13 model years of Lexus IS300s between 2001 and 2025. Transmission Parts are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2005, and 2003.

What are the cheapest Transmission Parts for my 2004 Lexus IS300?

The cheapest 2004 Lexus IS300 Transmission Parts we carry in stock are:

Differential, Transmission Drain And Fill Plug Crush Washers, Size 18mm (50247702) – $4.29
Transmission Oil Pan Gasket 19 Bolt Hole One Piece Gasket (21021931) – $5.99
Auto Transmission Manual Shaft Seal (11494069) – $6.49
Oil Seal (3267393) – $10.29
AT OIL PAN GASKET (11239205) – $11.79

What types of Transmission Parts do you sell for my 2004 Lexus IS300?

As of 3/1/26, these are some of the most in-demand types of Transmission Parts for a 2004 Lexus IS300:

Can I get help with 2004 Lexus IS300 Transmission Part orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Lexus Transmission Parts and more.

What is your return policy for Lexus IS300 Transmission Parts?

Advance Auto Parts keeps returns simple. For new Lexus IS300 Transmission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2004 Lexus IS300 Transmission Parts

ATP – AT EXT HOUSING SEAL (Part No.RO-77)

Carquest Premium – Multi-Purpose Relay (Part No.RAA1953)

National – Multi Purpose Seal (Part No.224663)

Carquest Premium – Neutral Safety Switch (Part No.NSC1047)

ATP – AT OIL PAN GASKET (Part No.RG-31)

Driveworks – Main Bearing Repair Sleeve (Part No.S-99181)

Pro-King – Automatic Transmission Remanufactured Torque Converter (Part No.TO59)

Koyo – Automatic Transmission Seal (Part No.J507048821KOY)

Schaeffler – Repair Sleeve (Part No.SR3501)

Felpro – Transmission Oil Pan Gasket 19 Bolt Hole One Piece Gasket (Part No.TOS 18748)

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARE3973)

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARE3976)

Anchor – Transmission Mount: Rear, 1 Piece (Part No.9649)

Anchor – Transmission Mount: Rear, 1 Piece (Part No.9623)

Dorman – Transmission Input or Output Speed Sensor (Part No.917-668)

Carquest Premium – Back Up Light Switch (Part No.SBA4634)

Driveworks – Oil Seal (Part No.S-223830)

Dorman – Differential, Transmission Drain And Fill Plug Crush Washers, Size 18mm (Part No.652-531CD)

National – Multi Purpose Seal (Part No.221207)

Driveworks – Auto Transmission Manual Shaft Seal (Part No.S-221207)

Anchor – Transmission Mount: Rear, 1 Piece (Part No.9623)

Carquest Premium – ABS Wheel Speed Sensor (Part No.ARC2402)

Carquest Premium – Multi-Purpose Relay (Part No.RAA1953)

Carquest Premium – Multi-Purpose Relay (Part No.RAA1891)

Carquest Premium – Automatic Transmission Speed Sensor (Part No.SNA1017)

Felpro – Transmission Oil Pan Gasket 19 Bolt Hole One Piece Gasket (Part No.TOS 18748)

ATP – AT OIL PAN GASKET (Part No.RG-31)

Dorman – Differential, Transmission Drain And Fill Plug Crush Washers, Size 18mm (Part No.652-531CD)

Driveworks – Oil Seal (Part No.S-223830)

National – Multi Purpose Seal (Part No.221207)

Driveworks – Auto Transmission Manual Shaft Seal (Part No.S-221207)

Driveworks – Main Bearing Repair Sleeve (Part No.S-99181)

ATP – AT EXT HOUSING SEAL (Part No.RO-77)

Koyo – Automatic Transmission Seal (Part No.J507048821KOY)

Schaeffler – Repair Sleeve (Part No.SR3501)