Febi 08731 Manual Transmission Main Shaft Nut
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Febi

Febi 08731 Manual Transmission Main Shaft Nut

Brand Febi 08731
Thread Diameter 26.0
Surface Yellow galvanized
Thread Pitch 1.5
Wrench Size (Metric) (mm) 30.0
Fits Mercedes-Benz · 6 vehicles

Yellow galvanized finish. Adds corrosion resistance for lasting hardware performance.

Main shaft nut. A transmission hardware fastener for secure assembly.

Cross-references 115 990 07 60 and 123 990 00 60 for the same application. See all 2.

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Febi 08731 Manual Transmission Main Shaft Nut

Febi 08731 is a manual transmission main shaft nut built for precise thread engagement and secure fastening in transmission service work. It features an M26 x 1.5 thread, a 30 mm wrench size, and a yellow galvanized surface finish for added corrosion resistance.

Compatible with select Mercedes-Benz 300SEL applications, this Febi transmission hardware part number 08731 supports accurate reassembly where the original main shaft nut specification is required.

Key Features

  • Manual transmission main shaft nut for transmission hardware service
  • M26 x 1.5 thread diameter and 1.5 thread pitch
  • 30 mm metric wrench size for proper tool engagement
  • Yellow galvanized surface finish
  • Cross-references Mercedes-Benz OE part numbers 115 990 07 60 and 123 990 00 60 for the same application

Detailed Description

Febi 08731 is a transmission fastener specified as a manual transmission main shaft nut. The listed dimensions are critical for correct fit and retention: 26.0 mm thread diameter, 1.5 thread pitch, and 30.0 mm wrench size. The yellow galvanized surface helps provide a protective finish suited to transmission hardware applications. This part number 08731 is listed for Mercedes-Benz 300SEL models in 1968-1969 and 1988-1991, making it a direct-reference choice for service on those vehicles.

For Mercedes-Benz 300SEL transmission repair, Febi 08731 helps maintain the correct hardware specification during rebuild or replacement work. Use the confirmed dimensions and vehicle fitment to verify application before installation.

What It Is Used For

  • Replacing a worn or damaged manual transmission main shaft nut
  • Restoring correct thread engagement in transmission assembly work
  • Addressing stripped, rounded, or corroded transmission fastener threads
  • Supporting transmission rebuilds on Mercedes-Benz 300SEL models
  • Maintaining OE-style hardware dimensions during service

Installation Notes and Tips

Verify the thread diameter, pitch, and wrench size before installation. Clean the mating threads and inspect the shaft and surrounding transmission components for wear or damage. Use the correct 30 mm metric tool to avoid rounding the nut, and follow the vehicle service procedure for torque and assembly sequence.

Quality Assurance

Febi is an established aftermarket brand for vehicle hardware and service parts. This part is identified by Febi part number 08731 and is listed with OE cross-references for the same application, supporting accurate parts matching for Mercedes-Benz transmission service.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1991Mercedes-Benz300SELN/AInternal Thread 1: M26 x 1.5; Wrench Size 1 (Metric): 30; Surface: yellow galvanized
1990Mercedes-Benz300SELN/AInternal Thread 1: M26 x 1.5; Wrench Size 1 (Metric): 30; Surface: yellow galvanized
1989Mercedes-Benz300SELN/AInternal Thread 1: M26 x 1.5; Wrench Size 1 (Metric): 30; Surface: yellow galvanized
1988Mercedes-Benz300SELN/AInternal Thread 1: M26 x 1.5; Wrench Size 1 (Metric): 30; Surface: yellow galvanized
1969Mercedes-Benz300SELN/AInternal Thread 1: M26 x 1.5; Wrench Size 1 (Metric): 30; Surface: yellow galvanized
1968Mercedes-Benz300SELN/AInternal Thread 1: M26 x 1.5; Wrench Size 1 (Metric): 30; Surface: yellow galvanized
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
115 990 07 60123 990 00 60