4SRC Rear Under Tray / Diffuser Plate – OEM-Style Carbon Upgrade for Nissan GT-R R35 (2012–2023)

Enhance your Nissan GT-R R35 with the 4SRC OEM-style Rear Under Tray / Diffuser Plate, meticulously crafted using prepreg carbon fiber and produced via high-temperature, high-pressure autoclave molding—the same advanced manufacturing process and material specifications used by the original equipment manufacturer.

Engineered for perfect fitment on DBA and EBA facelift models from 2012 to 2023, this component is a direct replacement for the original under tray/diffuser, combining lightweight performance, structural integrity, and a premium gloss carbon finish.

More than just a replacement, this diffuser is also a popular upgrade for CBA models (2007–2011). When paired with the facelift rear bumper and center fog light assembly, it allows pre-facelift GT-Rs to achieve a seamless, OEM-quality aesthetic and aerodynamic enhancement.

While the genuine Nissan diffuser retails for over £3,500, the 4SRC alternative delivers equivalent material quality and visual finish at just 1/5 the price, offering outstanding value for performance-focused owners, restorers, or anyone replacing a damaged factory unit.

Please note: Jacking plate not included. However, this diffuser is fully compatible with all GT-R R35 factory jacking plates from 2008 through 2023.

OEM Part Reference Numbers:

Compatible with and replaces the following original Nissan part numbers for easy cross-referencing:

• 748A0-KB50A

• 748A0-KB50B

• 748A0-KB51A

Experience motorsport-grade manufacturing in a street-ready component—designed, built, and priced for true GT-R enthusiasts.