Equivalent to Franklin tool no. 18586, designed for the removal and installation of the crankshaft nut on 6A4-150/165 and 6V4-178/200 engines.
CNC machined from 4140 steel, with a nitrocarburized finish, and features a 1/2-inch socket drive.

Q: I purchased this product before, but the design looks different. Why is that?
A: We listened to feedback from our customers and decided to create this new and improved version. While both versions are proven to work, we are offering a free replacement to all customers who purchased the previous batch (shipping costs not included). If you made a previous purchase, we have sent you an email with further details regarding this replacement offer.
Q: What material is this socket made from?
A: It’s crafted from hardened 4140 steel for durability and features a nitrocarburizing finish.
Q: What is nitrocarburized finish ?
A: The process we use is called Quench polish quench (QPQ), is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. Three steps are involved: nitrocarburize ("quench"), polish, and post-oxidize ("quench").
This process is often used when two or more of the following properties are required in a workpiece:
We Choose this surface treatment to minimise the risk of flaking coatings entering the engine. While this surface treatment provides some corrosion protection, this tool should be oiled lightly when not in use.
Q: How much does this socket weigh?
A: The socket weighs approximately 330g.
For more FAQs about Ordering, Shipping, Return & Refund, please see here.






