Selector Detent Core Plug 23127527439/23311224825 - 20x4mm

Selector Detent Core Plug – Manual Gearbox

Part Numbers: 23127527439 / 23311224825 | 20mm × 4mm

This selector detent core plug is a precision-machined sealing plug used in manual gearbox casings to close off detent ball and spring bores. When replacing a gearbox detent assembly or during a full gearbox rebuild, these plugs must be renewed to prevent oil leaks and maintain correct selector positioning.

Key Details

• Part Numbers: 23127527439 / 23311224825
• Dimensions: 20 mm diameter × 4 mm depth
• Application: Manual gearbox selector detent bore plug

Frequently Asked Questions

What is a detent core plug used for?

Detent core plugs seal the detent ball and spring bores in a manual gearbox casing. They prevent oil from escaping through the bore hole and maintain oil pressure in the selector mechanism.

When should these be replaced?

These plugs should be replaced whenever the detent assembly is accessed — for example during selector repair, seal replacement, or a full gearbox rebuild. Reusing old plugs risks leaks.

Is 23311224825 the same as 23127527439?

Both part numbers refer to interchangeable plugs for the same application. The different numbers reflect manufacturer supersession or cross-referencing between BMW and other applications.

How many plugs are included?

This listing is for a single plug. Please add the correct quantity to your cart for your gearbox rebuild.

Why Choose Eco Torque?

Eco Torque are manual gearbox rebuild specialists stocking a full range of small hardware items including detent plugs, circlips, springs, and seals. We supply the parts you need to complete a proper rebuild.

Need Help Finding the Right Part?

Send us your UK registration number or VIN and we will confirm this plug is correct for your gearbox application.

Reference Number: ET2484