Low Mileage 2003–2008 Mazda RX-8 Automatic Transmission – 13B Renesis OEM Replacement (For Sale) | J-Spec Auto Sports

J-Spec Auto Sports Inc. is offering a low-mileage OEM automatic transmission for the 2003–2008 Mazda RX-8, designed to work with the Mazda 13B Renesis rotary engine. This transmission has been inspected and verified in clean used condition, making it a reliable replacement for worn or failing RX-8 automatic gearboxes.

The Mazda RX-8 automatic transmission is engineered to complement the unique power characteristics of the 13B Renesis rotary engine, delivering smooth shifting performance and dependable durability. Replacing a failing transmission with a clean, low-mileage OEM unit is often the most cost-effective way to restore the performance and drivability of your RX-8.

Each transmission sold by J-Spec Auto Sports is carefully inspected before shipment to ensure quality and reliability for our customers.

Transmission Specifications

• Vehicle Application: Mazda RX-8

• Transmission Type: Automatic Transmission

• Engine Compatibility: 13B Renesis Rotary Engine

• Fuel Type: Gasoline

• Condition: Low Mileage / Clean Used Transmission

• Drivetrain: RWD (Rear-Wheel Drive)

This OEM transmission is designed to deliver smooth gear changes and reliable performance for RX-8 vehicles equipped with automatic transmissions.

Compatible Vehicles

This transmission fits the following models:

Mazda RX-8

• 2003 Mazda RX-8

• 2004 Mazda RX-8

• 2005 Mazda RX-8

• 2006 Mazda RX-8

• 2007 Mazda RX-8

• 2008 Mazda RX-8

Engine:

• 13B Renesis Rotary Engine

Always confirm transmission compatibility using your VIN or transmission code prior to installation.

What’s Included

This transmission package typically includes:

• Complete RX-8 automatic transmission assembly

• Torque converter (may vary depending on stock unit)

• Transmission housing and internal components

Exact accessories may vary depending on the unit currently available in inventory.

Signs Your RX-8 Transmission May Need Replacement

Common symptoms of a failing transmission include:

• Delayed shifting or slipping gears

• Transmission fluid leaks

• Hard or rough gear changes

• Transmission warning lights

• Loss of power during acceleration

Replacing the transmission with a clean OEM replacement unit helps restore smooth driving performance.

Why Buy From J-Spec Auto Sports?

J-Spec Auto Sports specializes in high-quality engines, transmissions, and JDM drivetrain components.

Our inventory frequently includes:

• Mazda rotary engines and transmissions

• Subaru WRX & STI turbo engines

• Honda and Acura engines

• Toyota and Nissan transmissions

• Rare JDM performance parts

All drivetrain components are inspected prior to shipment to ensure customer satisfaction.

Shipping Information

This Mazda RX-8 automatic transmission will be securely palletized and shipped via freight carrier anywhere in the United States.

Local pickup may also be available.

Contact J-Spec Auto Sports Inc. for pricing, availability, and shipping quotes.