Socket 10mm Internal Castellated 1/4in Drive for R9M Turbo

A 10mm internal castellated socket made for a specific fitting job on R9M turbo inlet housing bolts. This 1/4in drive socket uses an 8-point internal profile where a standard socket will not seat correctly, helping with the removal of inlet tract housing fasteners on the correct engine setup.

Used mainly for vehicle maintenance and repair work, it suits mechanics, garages and experienced DIY users working on selected Renault, Nissan, Vauxhall and Opel vans with the R9M 1.6 turbo diesel engine. When tackling turbo inlet housing removal, having the correct internal profile matters because these fasteners can be awkward to access and a poor fit can waste time or damage the bolt head. It is particularly relevant for servicing and strip-down work on Renault Trafic, Nissan NV300, Vauxhall Vivaro and Opel Vivaro applications where this specialist socket is required.

The 50mm length gives a compact format for access and handling in tighter engine bay areas, while the 1/4in drive suits smaller ratchets and extensions commonly used for this sort of detailed engine work. A CR-V PH black finish is supplied, along with a knurled body for extra grip when starting or handling the socket by hand. Because it is made for a very specific fastener shape, it helps avoid switching between unsuitable tools when working on the correct R9M inlet housing bolts. Useful for regular garage use where specialist service tools need to be kept close to hand for repeat jobs.

Socket specifications

• Profile: 10mm across points with an 8-point internal castellated design.
• Drive size: 1/4in drive fitting for use with compatible ratchets and extensions.
• Length: 50mm overall length for compact access around engine components.
• Finish: CR-V PH black finish with a knurled body for better hand grip.
• Application: Used on inlet tract housing bolts on the R9M 1.6 turbo diesel engine in selected Renault Trafic, Nissan NV300, Vauxhall Vivaro and Opel Vivaro vans.

A sensible choice when the job calls for the correct socket for a specific turbo housing fastener.