Fits 1999-2006 BMW 3-Series E46 models (323, 325, 328, 330, and M3).

The Sparco Seat Base Adapter provides a heavy-duty, flat mounting surface for installing aftermarket racing seats into your BMW. This vehicle-specific base is engineered to bolt directly to the factory floor mounting points, eliminating the need for custom fabrication or drilling. By utilizing factory mounting locations, this base ensures the seat is correctly positioned and securely anchored for both track and spirited street use.

• Manufacturer Part Number: 600SB121R
• Position: Right Side (Passenger)
• Chassis Fitment: BMW E46 (1999-2006)
• Construction: Heavy-gauge steel for maximum rigidity and safety
• Finish: Durable black powder coat to resist corrosion
• Installation: Direct bolt-on to original equipment (OE) mounting points

Fits select 1999-2006 BMW 3-Series (E46) including 323, 325, 328, 330, and M3 models.

The Sparco Seat Base provides a secure, vehicle-specific mounting platform for installing aftermarket seats into the BMW E46 chassis. Engineered to utilize factory seat mounting points, this adapter eliminates the need for custom fabrication or drilling. It is constructed from heavy-duty steel to ensure maximum rigidity and structural integrity, maintaining safety during spirited driving and track use.

This left-side (driver) base is designed to work seamlessly with Sparco seat sliders and side mounts, providing a low-profile installation that helps maintain an optimal driving position. The factory-grade finish and precision-cut mounting holes ensure a straightforward installation process.

• Precision fitment for 1999-2006 BMW 3-Series (E46)
• Direct bolt-on installation to OE mounting points
• Rugged steel construction for durability and safety
• Orientation: Left Side (Driver)
• Manufacturer Part Number: 600SB121L

Fits select 2007-2013 BMW 3 Series and M3 models (328i, 328xi, 335i, 335d, 335is, 335xi, and M3).

This Sparco Seat Base provides a vehicle-specific mounting solution for installing aftermarket performance seats. Engineered for a precise fit on the right side (passenger) of the BMW E92 chassis, this bracket bolts directly to the factory floor mounting points without the need for drilling or custom fabrication. It serves as the essential foundation for mounting Sparco sliders or side mounts to your vehicle.

• Manufacturer Part Number: 600SB120R
• Position: Right Side (Passenger)
• Construction: Heavy-duty steel for maximum rigidity and safety
• Installation: Utilizes factory mounting locations for a direct-fit, bolt-on application
• Compatibility: Designed for E9x chassis including 328i, 335i, and M3 models

This Sparco Seat Base provides a secure, direct-fit mounting solution for installing aftermarket seats into 2007-2013 BMW 3 Series and M3 (E92) models. Designed to bolt directly to the factory floor mounting points, this left-side (driver) bracket eliminates the need for custom fabrication, ensuring a professional and safe installation.

Constructed from heavy-duty steel, the 600SB120L base is engineered to provide a low-profile seating position, maintaining proper headroom and ergonomics. It is compatible with Sparco seat sliders and side mounts, allowing for a complete, modular seat-mounting system tailored to your track or street setup.

• Fits select 2007-2013 BMW 328i, 335i, 335d, 335is, and M3 (E92 Coupe)
• Left Side (Driver) application
• Manufacturer Part Number: 600SB120L
• Direct bolt-on to OE mounting points for simple installation
• Precision-engineered for maximum rigidity and safety

Fits 1989-1998 Nissan Skyline (Right Side).

The Sparco vehicle-specific seat base provides a professional-grade mounting solution for aftermarket seat installations. Engineered to bolt directly to the factory mounting points in your chassis, this base eliminates the need for custom fabrication or drilling. By utilizing the original floor pan geometry, it ensures a secure, rigid platform for your seat while maintaining proper alignment and structural integrity.

• Vehicle-specific design for the 1989-1998 Nissan Skyline
• Engineered for the Right Side (Passenger) position
• Heavy-duty steel construction for maximum rigidity and safety
• Direct bolt-on installation to factory floor mounting points
• Compatible with Sparco seat sliders and side mounts
• Durable black finish for long-term corrosion resistance
• Manufacturer Part Number: 600SB119R

Fits 1989-1998 Nissan Skyline models.

The Sparco Seat Base (MPN: 600SB119L) provides a rigid, secure mounting platform for installing aftermarket seats into your vehicle. Engineered specifically for the 1989-1998 Nissan Skyline chassis, this left-side base adapter is designed to bolt directly to the factory floor mounting points, ensuring a precise fit without the need for custom fabrication or drilling.

• Application: Left Side (LH)
• Constructed from high-strength steel for maximum safety and rigidity
• Durable black powder-coated finish for corrosion resistance
• Designed for use with Sparco sliders or side mounts for a complete installation
• Retains factory seat belt mounting points where applicable
• Manufacturer Part Number: 600SB119L

Fits 1986-1991 Mazda RX-7 models including Base, Turbo, GXL, GTU, and Convertible.

The Sparco Seat Base provides a precise, vehicle-specific mounting solution for installing aftermarket seats. This bracket is engineered to bolt directly to the factory floor mounting points of your Mazda RX-7, eliminating the need for custom fabrication or drilling. Constructed from heavy-duty steel, it provides a stable and secure platform for seat sliders or side mounts.

This right-side (passenger) seat base is designed to maintain proper seat height and alignment, ensuring a safe and ergonomic seating position for performance driving applications.

• Manufacturer Part Number: 600SB115R
• Position: Right Side (Passenger)
• Material: Heavy-duty steel construction
• Finish: Durable black powder coat
• Installation: Direct bolt-on to factory mounting points
• Compatibility: Designed for use with Sparco seat tracks and side mounts

Fits 1986-1991 Mazda RX-7 (Base, Turbo, Convertible, GXL, GTU, and Sport trims).

The Sparco Seat Base (Part #600SB115L) provides a secure, precision-engineered mounting platform for aftermarket racing seats. Designed specifically for the FC-chassis Mazda RX-7, this driver-side (left) bracket bolts directly to the factory floor mounting points, eliminating the need for drilling or custom fabrication. This vehicle-specific adapter creates a stable, flat surface required for mounting Sparco seat sliders or installing side-mount brackets for competition seats.

• Manufacturer Part Number: 600SB115L
• Position: Left Side (Driver)
• Heavy-duty steel construction for maximum rigidity and safety
• Direct-fit installation utilizing OEM factory mounting points
• Compatible with Sparco seat sliders for adjustable seating positions
• Black powder-coated finish for durability and corrosion resistance

Fits 2006-2015 Mazda MX-5 Miata (NC) across all trim levels including Sport, Grand Touring, Club, and Special Edition.

The Sparco Seat Base is engineered to provide a secure, vehicle-specific mounting solution for aftermarket seats. Designed to bolt directly to the factory floor mounting points of the NC-generation MX-5, this bracket eliminates the need for custom fabrication or drilling. It provides a flat, stable platform for installing seat sliders or side mounts, ensuring proper alignment and safety for track or street use.

• Precision laser-cut steel construction for maximum strength and rigidity
• Specifically tailored for the Right Side (Passenger) of the Mazda NC chassis
• Utilizes OEM mounting locations for a clean, bolt-in installation
• Durable black powder-coated finish for corrosion resistance
• Manufacturer Part Number: 600SB110R

Note: Proper installation may require Sparco seat sliders or side mounts depending on your specific seat model.

Fits 2006-2015 Mazda MX-5 Miata (NC).

This Sparco seat base is engineered to provide a secure and precise mounting platform for aftermarket performance seats. Designed as a vehicle-specific adapter, it bolts directly to the factory mounting points in the Mazda NC chassis, eliminating the need for custom fabrication or floorpan modification. The 600SB110L base provides the necessary interface for installing seat sliders or side mounts to achieve the optimal driving position while maintaining structural integrity.

• Vehicle Fitment: Mazda MX-5 Miata NC 2006-2015
• Orientation: Left Side
• Direct-fit installation to factory floor mounting points
• Manufacturer Part Number: 600SB110L
• Heavy-duty construction for reliable seat retention
• Compatible with Sparco seat tracks and side mount brackets

Fits all 1999-2005 Mazda Miata models, including Base, LS, Mazdaspeed, SE, Shinsen, and 10th Anniversary editions.

This Sparco Seat Base Adapter is engineered to provide a secure, vehicle-specific mounting platform for installing aftermarket seats in your NB-generation Mazda Miata. By utilizing the factory floor mounting points, this bracket ensures a direct-fit installation without the need for custom fabrication or drilling. Constructed for durability and precise alignment, it maintains the correct seat height and orientation for the passenger cabin.

• Direct bolt-on installation to factory mounting locations
• Specific to the Right (Passenger) side of the vehicle
• High-strength construction for maximum rigidity and safety
• Required for most Sparco seat installations to interface with the vehicle chassis
• Manufacturer Part Number: 600SB109R

Fits 1999-2005 Mazda Miata (NB) models, including Base, LS, Mazdaspeed, SE, and 10th Anniversary trims.

This Sparco Seat Base Adapter provides a secure, bolt-in foundation for mounting performance seats in your NB-generation Miata. Engineered specifically for the left-side (driver side) position, this bracket utilizes the vehicle's factory seat mounting points for a clean installation without the need for drilling or welding. Constructed from heavy-gauge steel, it offers the structural integrity required for both street and track use while maintaining proper seat alignment.

• Direct-fit for Mazda Miata NB chassis (1999-2005)
• Left-side (Driver) specific orientation
• Heavy-duty steel construction for maximum rigidity
• Finished in a durable black powder coat for corrosion resistance
• Compatible with Sparco sliders and side mounts
• Manufacturer Part Number: 600SB109L

Fits select 1991-2000 BMW 318is, 318ti, 323i, 323is, 325i, 325is, 328i, 328is, and M3.

The Sparco vehicle-specific seat base (Part #600SB108L) is engineered to provide a secure, level mounting surface for Sparco seats in your BMW chassis. This left-side (driver-side in US LHD vehicles) base plate bolts directly to the factory seat mounting points, eliminating the need for custom fabrication or drilling. Constructed from heavy-gauge steel for maximum rigidity, it serves as the essential interface between the vehicle floor and Sparco seat sliders or side mounts.

• Specifically designed for Left Side (driver side) installation
• Precision-engineered for BMW E36 and select early E46 chassis
• Finished in a durable black powder coat for corrosion resistance
• Bolts to factory mounting points with no vehicle modification required
• Manufacturer Part Number: 600SB108L

Fits 1990-1997 Mazda Miata NA models including Base, LE, M Edition, SE, and STO.

This Sparco Seat Base is engineered to provide a secure, vehicle-specific mounting platform for installing aftermarket seats into your Mazda Miata. Designed to bolt directly to the factory floor mounting points, this base eliminates the need for custom fabrication or drilling, ensuring a professional-grade installation. This specific model is configured for the right-hand (passenger) side of the vehicle.

• Manufacturer Part Number: 600SB101R
• Position: Right Side (Passenger)
• Direct-fit design utilizing factory mounting locations
• Compatible with Sparco seat tracks for simplified seat installation

Fits 1990-1997 Mazda Miata (NA) including Base, LE, M Edition, SE, and STO trims.

The Sparco 600SB101L Seat Base Adapter provides a vehicle-specific mounting solution for installing Sparco aftermarket seats into your NA-generation Miata. This bracket is engineered to bolt directly to the factory floor mounting points, providing a secure and stable foundation without the need for custom fabrication or drilling. It is designed to work in conjunction with Sparco seat tracks to allow for fore-and-aft adjustment.

• Position: Left (Driver Side)
• Application: 1990-1997 Mazda Miata (NA chassis)
• Mounting Style: Vehicle-specific direct bolt-on
• Utilizes factory seat mounting locations
• Manufacturer Part Number: 600SB101L

Fits 2012-2013 Fiat 500 models (Abarth, Turbo, Sport, Pop, and Lounge).

The Sparco Seat Base is engineered to provide a secure, vehicle-specific mounting solution for installing aftermarket seats. This base bolts directly to the factory mounting points in the vehicle floor, eliminating the need for custom fabrication or drilling. Specifically designed for the left side of the cabin, this adapter provides the necessary foundation for Sparco seat sliders or side mounts to ensure correct seat height and alignment.

• Manufacturer Part Number: 600SB099L
• Orientation: Left Side (Driver)
• Construction: High-strength steel for maximum rigidity
• Installation: Direct bolt-on to factory mounting locations
• Compatibility: Designed for use with Sparco seat hardware and accessories

Fits 2009-2020 Nissan 370Z including Base, Nismo, Sport, and Touring models.

This Sparco Seat Base Adapter provides a precise, bolt-in solution for installing aftermarket seating into your vehicle. Engineered to utilize the factory mounting points, this base ensures a secure installation without the need for custom fabrication or welding. The low-profile design is optimized to maintain a proper seating position while accommodating the specific floor pan geometry of the Nissan Z34 chassis.

• Direct-fit for the Right (Passenger) side application
• Utilizes factory seat mounting locations for a clean installation
• Heavy-duty construction for structural rigidity and safety
• Compatible with Sparco seat tracks and side mounts
• Manufacturer Part Number: 600SB096R

Fits 2009-2020 Nissan 370Z models across all trim levels including Base, Nismo, Sport, and Touring (Z34 chassis).

The Sparco vehicle-specific seat base is the essential foundation for installing aftermarket performance seats. This left-side (driver) mounting bracket (MPN: 600SB096L) is engineered to bolt directly to your vehicle's factory floor mounting points, providing a stable and secure interface for Sparco track sets or side mounts. By utilizing OEM mounting locations, this base ensures proper seat centering and height while eliminating the need for custom fabrication or drilling.

• Position: Left Side (Driver)
• Installation: Direct bolt-in to factory floor mounts
• Material: High-strength steel construction
• Application: 2009-2020 Nissan 370Z
• Manufacturer Part Number: 600SB096L
• Compatibility: Designed for use with Sparco seat tracks and side mounts

Fits select 2002-2013 Mini Cooper models, including Base, S, Clubman, JCW, Coupe, and Roadster (Passenger Side).

The Sparco Seat Base Adapter provides the critical interface needed to securely mount aftermarket performance seats to your vehicle's floor pan. Engineered specifically for the Mini Cooper chassis, this passenger side (Right) bracket utilizes factory mounting points to ensure a direct bolt-on installation without the need for custom fabrication. Built from heavy-duty steel, it maintains the structural integrity required for high-performance driving while providing a level, low-profile platform for your seat and sliders.

• Designed for Right (Passenger) side seat installation
• Heavy-duty steel construction for maximum rigidity and safety
• Direct-fit design utilizes factory vehicle mounting locations
• Durable black powder-coat finish resists corrosion
• Compatible with Sparco seat sliders and side mounts
• Manufacturer Part Number: 600SB094R

Fits select 2002-2013 Mini Cooper, Clubman, Coupe, Roadster, and John Cooper Works models (Base, S, and JCW).

This Sparco vehicle-specific seat base provides a secure, bolt-on solution for installing aftermarket seats into your Mini. Designed to replace the factory seat rails and interface directly with the vehicle's floor pan, this adapter plate utilizes the original factory mounting points to maintain structural integrity and simplify installation. This base is essential for achieving a proper, level seating position while accommodating Sparco side mounts or sliders.

• Side: Left (Driver Side)
• Precision-engineered for a direct-fit application
• Compatible with Sparco seat track sets and side mount brackets
• Durable steel construction with a high-quality finish
• Manufacturer Part Number: 600SB094L

Fits select 2004-2011 Mazda RX-8 models including Base, Grand Touring, R3, Sport, Touring, Shinka, and 40th Anniversary Edition. This vehicle-specific Sparco Seat Base provides a secure and precise mounting platform for installing aftermarket performance seats.

Engineered to bolt directly to the factory floor mounting points, this base replaces the original seat brackets to ensure a low-profile and stable installation. It serves as the necessary interface for attaching seat sliders or side mounts, maintaining proper alignment and structural integrity within the cabin.

• Position: Left Side (Driver)
• Vehicle-specific design utilizes factory mounting locations
• Constructed from heavy-duty steel for maximum rigidity
• Finished in a durable black coating for corrosion resistance
• Compatible with Sparco sliders and side mount brackets
• Manufacturer Part Number: 600SB079L

Fits 2003-2008 Infiniti G35 (Base, Journey, Sport, and X models).

The Sparco Seat Base provides a heavy-duty, vehicle-specific mounting solution for installing performance seats. This bracket is engineered to bolt directly to the factory floor mounting points of the 2003-2008 Infiniti G35, ensuring a secure and precise fit without the need for custom fabrication. It serves as the essential interface between your vehicle's chassis and Sparco seat sliders or side mounts.

• Application-specific design for the Right (Passenger) side seat position.
• Constructed from heavy-gauge steel for maximum structural integrity and safety.
• Durable black powder-coated finish provides long-lasting corrosion resistance.
• Utilizes factory mounting locations for a straightforward, bolt-on installation.
• Compatible with Sparco seat sliders and competition side mounts.
• Manufacturer Part Number: 600SB075R

Fits 2003-2008 Infiniti G35 (Base, Journey, Sport, and X).

The Sparco Seat Base (MPN 600SB075L) provides a safe and secure mounting platform for installing aftermarket seats in your vehicle. This vehicle-specific bracket is engineered to bolt directly to the factory floor mounting points, eliminating the need for custom fabrication or drilling. The "Low Lift" design ensures the lowest possible seating position to maximize headroom and improve the center of gravity for performance driving.

• Vehicle-specific fitment for 2003-2008 Infiniti G35 models
• Constructed from heavy-gauge steel for maximum rigidity and safety
• Left-side (Driver) orientation
• Accepts Sparco track sets and side mounts for various seat configurations
• Uses factory mounting locations for a clean, professional installation
• Manufacturer Part Number: 600SB075L

Fits 2006-2009 Honda Civic DX.

The Sparco Seat Base provides a secure, vehicle-specific foundation for mounting aftermarket performance seats. This adapter is engineered to bolt directly to the factory mounting points of your vehicle's floor, eliminating the need for custom fabrication or drilling. By utilizing high-strength materials and precise tolerances, it ensures a stable and safe platform for seat sliders and side mounts.

Built from heavy-duty steel and finished with a durable coating, this left-side (driver side) base is designed to maintain optimal seat height and alignment for a performance driving position. Whether you are prepping for the track or upgrading your interior, this Sparco adapter offers the rigidity and fitment required for a professional installation.

• Manufacturer Part Number: 600SB068L
• Position: Left (Driver) Side
• Material: Heavy-duty steel construction
• Installation: Bolts to factory mounting points
• Compatible with Sparco sliders and side mounts

Fits select 1974-1998 Porsche 911, 944, and 968 models. This vehicle-specific seat base provides a secure, bolt-on mounting solution for Sparco seats, engineered to utilize the factory seat mounting points for a clean installation.

The Sparco 600 Series seat base is designed to offer a low, stable mounting position while maintaining the structural integrity required for performance driving. By eliminating the need for universal brackets, this adapter ensures proper fitment and alignment within the vehicle's interior. Note: Seat sliders and hardware are typically required to complete the installation.

• Manufacturer Part Number: 600SB052R
• Position: Right (Passenger Side)
• Design: 600 Series vehicle-specific adapter
• Application: Replaces OEM seat base using factory mounting locations
• Compatible with: Porsche 911 (1974-1998), 944 (1983-1991), 968 (1992-1995)

Fits select 1974-1998 Porsche 911, 944, and 968 models. This Sparco Left Side Seat Base (MPN: 600SB052L) provides the necessary foundation for mounting Sparco seats into your Porsche. Engineered to utilize factory seat mounting locations, this vehicle-specific bracket ensures a secure, flat platform for a safe and professional installation.

By utilizing factory bolt patterns, this base eliminates the need for floor pan modifications. It is designed to work with Sparco track sets or side mounts to accommodate both bottom-mount and side-mount seat configurations, depending on your specific seat choice and desired driving position.

• Manufacturer Part Number: 600SB052L
• Orientation: Left Side (Driver Side for LHD vehicles)
• Vehicle-specific design for 1974-1998 Porsche 911, 944, and 968
• Construction: Heavy-duty steel for maximum rigidity
• Direct bolt-on compatibility with factory mounting points

Fits all 1990-1996 Nissan 300ZX models (Base, Turbo, and 2+2).

This Sparco seat base adapter provides a precision-engineered mounting solution for installing aftermarket seats into the Z32 chassis. Designed specifically for the right (passenger) side, this bracket bolts directly to the factory mounting points, eliminating the need for custom fabrication or floor modifications. It creates a level and secure platform compatible with Sparco sliders and side mounts, ensuring proper seat alignment and safety.

• Manufacturer Part Number: 600SB051R
• Orientation: Right (Passenger) Side
• Material: Heavy-duty steel construction for maximum rigidity
• Installation: Utilizes factory seat mounting locations
• Compatibility: Designed for use with Sparco seat track sets and hardware

Fits 1990-1996 Nissan 300ZX (Base, Turbo, and 2+2 models).

The Sparco Seat Base Adapter provides a vehicle-specific mounting solution for installing aftermarket seats into your Z32. This bracket utilizes the factory seat mounting points to ensure a secure, bolt-on installation without the need for drilling or custom fabrication. Designed specifically for the left (driver) side, it creates a level platform for mounting Sparco seat sliders or side-mount brackets, maintaining proper seat height and clearance within the cabin.

• Precision-engineered for the 1990-1996 Nissan 300ZX chassis
• Retains factory mounting geometry for a straightforward installation
• Heavy-duty construction ensures a stable and secure seating position
• Designed for use with Sparco sliders or side mounts
• Manufacturer Part Number: 600SB051L
• Orientation: Left (Driver Side)

Fits 1989-1998 Nissan 240SX Base, LE, SE, and XE models.

The Sparco Seat Base provides a secure, vehicle-specific mounting platform for installing aftermarket seats in your 240SX. Engineered to bolt directly to the factory floor mounting points, this bracket replaces the bulky OE seat hardware while maintaining correct alignment and seat height. It is designed to work with Sparco seat sliders and side mounts for a complete, professional-grade installation.

• Position: Right (Passenger Side)
• Installation: Bolts directly to factory mounting locations with no drilling required
• Construction: High-strength steel with a durable black powder-coated finish
• Compatibility: Designed for use with Sparco seats and mounting hardware
• Manufacturer Part Number: 600SB050R

Fits 1989-1998 Nissan 240SX (Base, LE, SE, and XE).

Securely install your performance seating with the Sparco 600SB050LR Seat Base. Engineered specifically for the Nissan 240SX chassis, this adapter plate utilizes factory floor mounting points to provide a stable, level foundation for seat installation. This specific model is a low-profile version designed for the right-side (passenger) position, maximizing headroom and maintaining a low center of gravity for fixed-back racing seats.

• Manufacturer Part Number: 600SB050LR
• Orientation: Right Side (Passenger)
• Fitment Span: 1989-1998 Nissan 240SX
• Profile: Low-mount for increased helmet clearance
• Compatibility: Optimized for fixed-back seats
• Installation: Direct bolt-on to factory mounting points