Nachi Toyota Tapered Roller Bearing 40KB722 S266 40x72x19.5/15.9mm

Nachi Toyota Tapered Roller Bearing 40KB722 S266 40x72x19.5/15.9mm

OEM Nachi tapered roller bearing, part number 40KB722 S266, measuring 40mm bore × 72mm outer diameter × 19.5mm cone width × 15.9mm cup width. This bearing is used in Toyota automatic transmissions and gearboxes. Supplied as a matched cup and cone assembly. Nachi is the OEM supplier to Toyota for this bearing position.

Specifications:

• Bore diameter: 40mm
• Outer diameter: 72mm
• Cone width: 19.5mm
• Cup width: 15.9mm
• Brand: Nachi
• Seals/shields: None

What Toyota gearboxes use the 40KB722 bearing?

The 40KB722 S266 is used in Toyota automatic transmissions. Exact fitment depends on the transmission code. Please send us your vehicle registration or VIN and we will confirm whether this bearing fits your specific application.

Is Nachi the genuine Toyota OEM supplier?

Yes. Nachi (Fujikoshi) is a Japanese precision bearing manufacturer that supplies bearings as original equipment to Toyota and other Japanese vehicle manufacturers. The 40KB722 S266 is an OEM Nachi bearing specification.

What is the S266 suffix?

The S266 suffix on Nachi Toyota bearings denotes a special specification — typically a specific grease fill, sealing type, or internal clearance adjustment required by Toyota for this application. Always match the full part number including the suffix.

Do I need special tools to fit this bearing?

Yes. Tapered roller bearings require a press for installation and correct preload setting during assembly. Fitting should be carried out by a qualified gearbox technician using appropriate torque and preload specifications from the vehicle workshop manual.

Why Choose Eco Torque?

As specialists in gearbox rebuilds and repairs, Eco Torque takes pride in offering genuine gearbox parts, high-quality aftermarket alternatives and competitive pricing.

Need Help Finding the Right Part?

If you are unsure whether this part is compatible with your vehicle, send us your UK registration number or VIN and we will help you find the correct part.

Reference Number: ET2161