GM Style (9")  Delco Style  Dual Diaphragm Power Brake Booster , WIDE APPLICATIONS AN UNIVERSAL ..

Exact copy of Delco's unit  with a SHORT  Threaded Rod as shown.

     Note the thread extension on this..its approx 25 mm (1 inch) short thread.

    Same as the chrome booster # PW220813A but all black & has the Delco logo TM.

As an additional guide.. this might help people over time.... DONT JUST BLAME A PART

Don't have time to read this below ??.. but have a suspected booster issue.. then at LEAST read this link to the USA suppliers MBMbrakes who supply this stuff all day every day...https://mbmbrakes.com/brake-booster-diagnostics/

      If looking for a GM style compact booster... this is a good one for vacuum reserve & size.... best to know if you have this longer threaded rod before ordering.. or you have a clevis pin/yoke that is ok for this extension or you can create one on the shorter rod .... check the others for what seems like a shortened cut off thread also for more compact fitment... your s may be either..so worth checking...

• 9" Delco Style Dual Diaphragm Power Brake Booster
• Exact copy of Delco with Short Threaded Rod
• Black Finish
• 3.75" Length Rod
• GM 3-3/8 Bolt Pattern

    Picture is correct - this booster is BLACK.

   Delivery is  covered within Australia when paid and ordered online - but not to Darwin / NT or WA regional remote stations and towns.